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cobalt / cobalt / f585e2638bbd137762988742fc2cbe613293dc58 / . / src / cobalt / debug / remote / devtools / node_modules / chai / chai.js
blob: 39429c51b9126e7242fa1e82b7e4227d001d2e58 [file] [log] [blame]
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.chai = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
module.exports = require('./lib/chai');
},{"./lib/chai":2}],2:[function(require,module,exports){
/*!
* chai
* Copyright(c) 2011-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
var used = [];
/*!
* Chai version
*/
exports.version = '4.2.0';
/*!
* Assertion Error
*/
exports.AssertionError = require('assertion-error');
/*!
* Utils for plugins (not exported)
*/
var util = require('./chai/utils');
/**
* # .use(function)
*
* Provides a way to extend the internals of Chai.
*
* @param {Function}
* @returns {this} for chaining
* @api public
*/
exports.use = function (fn) {
if (!~used.indexOf(fn)) {
fn(exports, util);
used.push(fn);
}
return exports;
};
/*!
* Utility Functions
*/
exports.util = util;
/*!
* Configuration
*/
var config = require('./chai/config');
exports.config = config;
/*!
* Primary `Assertion` prototype
*/
var assertion = require('./chai/assertion');
exports.use(assertion);
/*!
* Core Assertions
*/
var core = require('./chai/core/assertions');
exports.use(core);
/*!
* Expect interface
*/
var expect = require('./chai/interface/expect');
exports.use(expect);
/*!
* Should interface
*/
var should = require('./chai/interface/should');
exports.use(should);
/*!
* Assert interface
*/
var assert = require('./chai/interface/assert');
exports.use(assert);
},{"./chai/assertion":3,"./chai/config":4,"./chai/core/assertions":5,"./chai/interface/assert":6,"./chai/interface/expect":7,"./chai/interface/should":8,"./chai/utils":22,"assertion-error":33}],3:[function(require,module,exports){
/*!
* chai
* http://chaijs.com
* Copyright(c) 2011-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
var config = require('./config');
module.exports = function (_chai, util) {
/*!
* Module dependencies.
*/
var AssertionError = _chai.AssertionError
, flag = util.flag;
/*!
* Module export.
*/
_chai.Assertion = Assertion;
/*!
* Assertion Constructor
*
* Creates object for chaining.
*
* `Assertion` objects contain metadata in the form of flags. Three flags can
* be assigned during instantiation by passing arguments to this constructor:
*
* - `object`: This flag contains the target of the assertion. For example, in
* the assertion `expect(numKittens).to.equal(7);`, the `object` flag will
* contain `numKittens` so that the `equal` assertion can reference it when
* needed.
*
* - `message`: This flag contains an optional custom error message to be
* prepended to the error message that's generated by the assertion when it
* fails.
*
* - `ssfi`: This flag stands for "start stack function indicator". It
* contains a function reference that serves as the starting point for
* removing frames from the stack trace of the error that's created by the
* assertion when it fails. The goal is to provide a cleaner stack trace to
* end users by removing Chai's internal functions. Note that it only works
* in environments that support `Error.captureStackTrace`, and only when
* `Chai.config.includeStack` hasn't been set to `false`.
*
* - `lockSsfi`: This flag controls whether or not the given `ssfi` flag
* should retain its current value, even as assertions are chained off of
* this object. This is usually set to `true` when creating a new assertion
* from within another assertion. It's also temporarily set to `true` before
* an overwritten assertion gets called by the overwriting assertion.
*
* @param {Mixed} obj target of the assertion
* @param {String} msg (optional) custom error message
* @param {Function} ssfi (optional) starting point for removing stack frames
* @param {Boolean} lockSsfi (optional) whether or not the ssfi flag is locked
* @api private
*/
function Assertion (obj, msg, ssfi, lockSsfi) {
flag(this, 'ssfi', ssfi || Assertion);
flag(this, 'lockSsfi', lockSsfi);
flag(this, 'object', obj);
flag(this, 'message', msg);
return util.proxify(this);
}
Object.defineProperty(Assertion, 'includeStack', {
get: function() {
console.warn('Assertion.includeStack is deprecated, use chai.config.includeStack instead.');
return config.includeStack;
},
set: function(value) {
console.warn('Assertion.includeStack is deprecated, use chai.config.includeStack instead.');
config.includeStack = value;
}
});
Object.defineProperty(Assertion, 'showDiff', {
get: function() {
console.warn('Assertion.showDiff is deprecated, use chai.config.showDiff instead.');
return config.showDiff;
},
set: function(value) {
console.warn('Assertion.showDiff is deprecated, use chai.config.showDiff instead.');
config.showDiff = value;
}
});
Assertion.addProperty = function (name, fn) {
util.addProperty(this.prototype, name, fn);
};
Assertion.addMethod = function (name, fn) {
util.addMethod(this.prototype, name, fn);
};
Assertion.addChainableMethod = function (name, fn, chainingBehavior) {
util.addChainableMethod(this.prototype, name, fn, chainingBehavior);
};
Assertion.overwriteProperty = function (name, fn) {
util.overwriteProperty(this.prototype, name, fn);
};
Assertion.overwriteMethod = function (name, fn) {
util.overwriteMethod(this.prototype, name, fn);
};
Assertion.overwriteChainableMethod = function (name, fn, chainingBehavior) {
util.overwriteChainableMethod(this.prototype, name, fn, chainingBehavior);
};
/**
* ### .assert(expression, message, negateMessage, expected, actual, showDiff)
*
* Executes an expression and check expectations. Throws AssertionError for reporting if test doesn't pass.
*
* @name assert
* @param {Philosophical} expression to be tested
* @param {String|Function} message or function that returns message to display if expression fails
* @param {String|Function} negatedMessage or function that returns negatedMessage to display if negated expression fails
* @param {Mixed} expected value (remember to check for negation)
* @param {Mixed} actual (optional) will default to `this.obj`
* @param {Boolean} showDiff (optional) when set to `true`, assert will display a diff in addition to the message if expression fails
* @api private
*/
Assertion.prototype.assert = function (expr, msg, negateMsg, expected, _actual, showDiff) {
var ok = util.test(this, arguments);
if (false !== showDiff) showDiff = true;
if (undefined === expected && undefined === _actual) showDiff = false;
if (true !== config.showDiff) showDiff = false;
if (!ok) {
msg = util.getMessage(this, arguments);
var actual = util.getActual(this, arguments);
throw new AssertionError(msg, {
actual: actual
, expected: expected
, showDiff: showDiff
}, (config.includeStack) ? this.assert : flag(this, 'ssfi'));
}
};
/*!
* ### ._obj
*
* Quick reference to stored `actual` value for plugin developers.
*
* @api private
*/
Object.defineProperty(Assertion.prototype, '_obj',
{ get: function () {
return flag(this, 'object');
}
, set: function (val) {
flag(this, 'object', val);
}
});
};
},{"./config":4}],4:[function(require,module,exports){
module.exports = {
/**
* ### config.includeStack
*
* User configurable property, influences whether stack trace
* is included in Assertion error message. Default of false
* suppresses stack trace in the error message.
*
* chai.config.includeStack = true; // enable stack on error
*
* @param {Boolean}
* @api public
*/
includeStack: false,
/**
* ### config.showDiff
*
* User configurable property, influences whether or not
* the `showDiff` flag should be included in the thrown
* AssertionErrors. `false` will always be `false`; `true`
* will be true when the assertion has requested a diff
* be shown.
*
* @param {Boolean}
* @api public
*/
showDiff: true,
/**
* ### config.truncateThreshold
*
* User configurable property, sets length threshold for actual and
* expected values in assertion errors. If this threshold is exceeded, for
* example for large data structures, the value is replaced with something
* like `[ Array(3) ]` or `{ Object (prop1, prop2) }`.
*
* Set it to zero if you want to disable truncating altogether.
*
* This is especially userful when doing assertions on arrays: having this
* set to a reasonable large value makes the failure messages readily
* inspectable.
*
* chai.config.truncateThreshold = 0; // disable truncating
*
* @param {Number}
* @api public
*/
truncateThreshold: 40,
/**
* ### config.useProxy
*
* User configurable property, defines if chai will use a Proxy to throw
* an error when a non-existent property is read, which protects users
* from typos when using property-based assertions.
*
* Set it to false if you want to disable this feature.
*
* chai.config.useProxy = false; // disable use of Proxy
*
* This feature is automatically disabled regardless of this config value
* in environments that don't support proxies.
*
* @param {Boolean}
* @api public
*/
useProxy: true,
/**
* ### config.proxyExcludedKeys
*
* User configurable property, defines which properties should be ignored
* instead of throwing an error if they do not exist on the assertion.
* This is only applied if the environment Chai is running in supports proxies and
* if the `useProxy` configuration setting is enabled.
* By default, `then` and `inspect` will not throw an error if they do not exist on the
* assertion object because the `.inspect` property is read by `util.inspect` (for example, when
* using `console.log` on the assertion object) and `.then` is necessary for promise type-checking.
*
* // By default these keys will not throw an error if they do not exist on the assertion object
* chai.config.proxyExcludedKeys = ['then', 'inspect'];
*
* @param {Array}
* @api public
*/
proxyExcludedKeys: ['then', 'catch', 'inspect', 'toJSON']
};
},{}],5:[function(require,module,exports){
/*!
* chai
* http://chaijs.com
* Copyright(c) 2011-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
module.exports = function (chai, _) {
var Assertion = chai.Assertion
, AssertionError = chai.AssertionError
, flag = _.flag;
/**
* ### Language Chains
*
* The following are provided as chainable getters to improve the readability
* of your assertions.
*
* **Chains**
*
* - to
* - be
* - been
* - is
* - that
* - which
* - and
* - has
* - have
* - with
* - at
* - of
* - same
* - but
* - does
* - still
*
* @name language chains
* @namespace BDD
* @api public
*/
[ 'to', 'be', 'been', 'is'
, 'and', 'has', 'have', 'with'
, 'that', 'which', 'at', 'of'
, 'same', 'but', 'does', 'still' ].forEach(function (chain) {
Assertion.addProperty(chain);
});
/**
* ### .not
*
* Negates all assertions that follow in the chain.
*
* expect(function () {}).to.not.throw();
* expect({a: 1}).to.not.have.property('b');
* expect([1, 2]).to.be.an('array').that.does.not.include(3);
*
* Just because you can negate any assertion with `.not` doesn't mean you
* should. With great power comes great responsibility. It's often best to
* assert that the one expected output was produced, rather than asserting
* that one of countless unexpected outputs wasn't produced. See individual
* assertions for specific guidance.
*
* expect(2).to.equal(2); // Recommended
* expect(2).to.not.equal(1); // Not recommended
*
* @name not
* @namespace BDD
* @api public
*/
Assertion.addProperty('not', function () {
flag(this, 'negate', true);
});
/**
* ### .deep
*
* Causes all `.equal`, `.include`, `.members`, `.keys`, and `.property`
* assertions that follow in the chain to use deep equality instead of strict
* (`===`) equality. See the `deep-eql` project page for info on the deep
* equality algorithm: https://github.com/chaijs/deep-eql.
*
* // Target object deeply (but not strictly) equals `{a: 1}`
* expect({a: 1}).to.deep.equal({a: 1});
* expect({a: 1}).to.not.equal({a: 1});
*
* // Target array deeply (but not strictly) includes `{a: 1}`
* expect([{a: 1}]).to.deep.include({a: 1});
* expect([{a: 1}]).to.not.include({a: 1});
*
* // Target object deeply (but not strictly) includes `x: {a: 1}`
* expect({x: {a: 1}}).to.deep.include({x: {a: 1}});
* expect({x: {a: 1}}).to.not.include({x: {a: 1}});
*
* // Target array deeply (but not strictly) has member `{a: 1}`
* expect([{a: 1}]).to.have.deep.members([{a: 1}]);
* expect([{a: 1}]).to.not.have.members([{a: 1}]);
*
* // Target set deeply (but not strictly) has key `{a: 1}`
* expect(new Set([{a: 1}])).to.have.deep.keys([{a: 1}]);
* expect(new Set([{a: 1}])).to.not.have.keys([{a: 1}]);
*
* // Target object deeply (but not strictly) has property `x: {a: 1}`
* expect({x: {a: 1}}).to.have.deep.property('x', {a: 1});
* expect({x: {a: 1}}).to.not.have.property('x', {a: 1});
*
* @name deep
* @namespace BDD
* @api public
*/
Assertion.addProperty('deep', function () {
flag(this, 'deep', true);
});
/**
* ### .nested
*
* Enables dot- and bracket-notation in all `.property` and `.include`
* assertions that follow in the chain.
*
* expect({a: {b: ['x', 'y']}}).to.have.nested.property('a.b[1]');
* expect({a: {b: ['x', 'y']}}).to.nested.include({'a.b[1]': 'y'});
*
* If `.` or `[]` are part of an actual property name, they can be escaped by
* adding two backslashes before them.
*
* expect({'.a': {'[b]': 'x'}}).to.have.nested.property('\\.a.\\[b\\]');
* expect({'.a': {'[b]': 'x'}}).to.nested.include({'\\.a.\\[b\\]': 'x'});
*
* `.nested` cannot be combined with `.own`.
*
* @name nested
* @namespace BDD
* @api public
*/
Assertion.addProperty('nested', function () {
flag(this, 'nested', true);
});
/**
* ### .own
*
* Causes all `.property` and `.include` assertions that follow in the chain
* to ignore inherited properties.
*
* Object.prototype.b = 2;
*
* expect({a: 1}).to.have.own.property('a');
* expect({a: 1}).to.have.property('b');
* expect({a: 1}).to.not.have.own.property('b');
*
* expect({a: 1}).to.own.include({a: 1});
* expect({a: 1}).to.include({b: 2}).but.not.own.include({b: 2});
*
* `.own` cannot be combined with `.nested`.
*
* @name own
* @namespace BDD
* @api public
*/
Assertion.addProperty('own', function () {
flag(this, 'own', true);
});
/**
* ### .ordered
*
* Causes all `.members` assertions that follow in the chain to require that
* members be in the same order.
*
* expect([1, 2]).to.have.ordered.members([1, 2])
* .but.not.have.ordered.members([2, 1]);
*
* When `.include` and `.ordered` are combined, the ordering begins at the
* start of both arrays.
*
* expect([1, 2, 3]).to.include.ordered.members([1, 2])
* .but.not.include.ordered.members([2, 3]);
*
* @name ordered
* @namespace BDD
* @api public
*/
Assertion.addProperty('ordered', function () {
flag(this, 'ordered', true);
});
/**
* ### .any
*
* Causes all `.keys` assertions that follow in the chain to only require that
* the target have at least one of the given keys. This is the opposite of
* `.all`, which requires that the target have all of the given keys.
*
* expect({a: 1, b: 2}).to.not.have.any.keys('c', 'd');
*
* See the `.keys` doc for guidance on when to use `.any` or `.all`.
*
* @name any
* @namespace BDD
* @api public
*/
Assertion.addProperty('any', function () {
flag(this, 'any', true);
flag(this, 'all', false);
});
/**
* ### .all
*
* Causes all `.keys` assertions that follow in the chain to require that the
* target have all of the given keys. This is the opposite of `.any`, which
* only requires that the target have at least one of the given keys.
*
* expect({a: 1, b: 2}).to.have.all.keys('a', 'b');
*
* Note that `.all` is used by default when neither `.all` nor `.any` are
* added earlier in the chain. However, it's often best to add `.all` anyway
* because it improves readability.
*
* See the `.keys` doc for guidance on when to use `.any` or `.all`.
*
* @name all
* @namespace BDD
* @api public
*/
Assertion.addProperty('all', function () {
flag(this, 'all', true);
flag(this, 'any', false);
});
/**
* ### .a(type[, msg])
*
* Asserts that the target's type is equal to the given string `type`. Types
* are case insensitive. See the `type-detect` project page for info on the
* type detection algorithm: https://github.com/chaijs/type-detect.
*
* expect('foo').to.be.a('string');
* expect({a: 1}).to.be.an('object');
* expect(null).to.be.a('null');
* expect(undefined).to.be.an('undefined');
* expect(new Error).to.be.an('error');
* expect(Promise.resolve()).to.be.a('promise');
* expect(new Float32Array).to.be.a('float32array');
* expect(Symbol()).to.be.a('symbol');
*
* `.a` supports objects that have a custom type set via `Symbol.toStringTag`.
*
* var myObj = {
* [Symbol.toStringTag]: 'myCustomType'
* };
*
* expect(myObj).to.be.a('myCustomType').but.not.an('object');
*
* It's often best to use `.a` to check a target's type before making more
* assertions on the same target. That way, you avoid unexpected behavior from
* any assertion that does different things based on the target's type.
*
* expect([1, 2, 3]).to.be.an('array').that.includes(2);
* expect([]).to.be.an('array').that.is.empty;
*
* Add `.not` earlier in the chain to negate `.a`. However, it's often best to
* assert that the target is the expected type, rather than asserting that it
* isn't one of many unexpected types.
*
* expect('foo').to.be.a('string'); // Recommended
* expect('foo').to.not.be.an('array'); // Not recommended
*
* `.a` accepts an optional `msg` argument which is a custom error message to
* show when the assertion fails. The message can also be given as the second
* argument to `expect`.
*
* expect(1).to.be.a('string', 'nooo why fail??');
* expect(1, 'nooo why fail??').to.be.a('string');
*
* `.a` can also be used as a language chain to improve the readability of
* your assertions.
*
* expect({b: 2}).to.have.a.property('b');
*
* The alias `.an` can be used interchangeably with `.a`.
*
* @name a
* @alias an
* @param {String} type
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function an (type, msg) {
if (msg) flag(this, 'message', msg);
type = type.toLowerCase();
var obj = flag(this, 'object')
, article = ~[ 'a', 'e', 'i', 'o', 'u' ].indexOf(type.charAt(0)) ? 'an ' : 'a ';
this.assert(
type === _.type(obj).toLowerCase()
, 'expected #{this} to be ' + article + type
, 'expected #{this} not to be ' + article + type
);
}
Assertion.addChainableMethod('an', an);
Assertion.addChainableMethod('a', an);
/**
* ### .include(val[, msg])
*
* When the target is a string, `.include` asserts that the given string `val`
* is a substring of the target.
*
* expect('foobar').to.include('foo');
*
* When the target is an array, `.include` asserts that the given `val` is a
* member of the target.
*
* expect([1, 2, 3]).to.include(2);
*
* When the target is an object, `.include` asserts that the given object
* `val`'s properties are a subset of the target's properties.
*
* expect({a: 1, b: 2, c: 3}).to.include({a: 1, b: 2});
*
* When the target is a Set or WeakSet, `.include` asserts that the given `val` is a
* member of the target. SameValueZero equality algorithm is used.
*
* expect(new Set([1, 2])).to.include(2);
*
* When the target is a Map, `.include` asserts that the given `val` is one of
* the values of the target. SameValueZero equality algorithm is used.
*
* expect(new Map([['a', 1], ['b', 2]])).to.include(2);
*
* Because `.include` does different things based on the target's type, it's
* important to check the target's type before using `.include`. See the `.a`
* doc for info on testing a target's type.
*
* expect([1, 2, 3]).to.be.an('array').that.includes(2);
*
* By default, strict (`===`) equality is used to compare array members and
* object properties. Add `.deep` earlier in the chain to use deep equality
* instead (WeakSet targets are not supported). See the `deep-eql` project
* page for info on the deep equality algorithm: https://github.com/chaijs/deep-eql.
*
* // Target array deeply (but not strictly) includes `{a: 1}`
* expect([{a: 1}]).to.deep.include({a: 1});
* expect([{a: 1}]).to.not.include({a: 1});
*
* // Target object deeply (but not strictly) includes `x: {a: 1}`
* expect({x: {a: 1}}).to.deep.include({x: {a: 1}});
* expect({x: {a: 1}}).to.not.include({x: {a: 1}});
*
* By default, all of the target's properties are searched when working with
* objects. This includes properties that are inherited and/or non-enumerable.
* Add `.own` earlier in the chain to exclude the target's inherited
* properties from the search.
*
* Object.prototype.b = 2;
*
* expect({a: 1}).to.own.include({a: 1});
* expect({a: 1}).to.include({b: 2}).but.not.own.include({b: 2});
*
* Note that a target object is always only searched for `val`'s own
* enumerable properties.
*
* `.deep` and `.own` can be combined.
*
* expect({a: {b: 2}}).to.deep.own.include({a: {b: 2}});
*
* Add `.nested` earlier in the chain to enable dot- and bracket-notation when
* referencing nested properties.
*
* expect({a: {b: ['x', 'y']}}).to.nested.include({'a.b[1]': 'y'});
*
* If `.` or `[]` are part of an actual property name, they can be escaped by
* adding two backslashes before them.
*
* expect({'.a': {'[b]': 2}}).to.nested.include({'\\.a.\\[b\\]': 2});
*
* `.deep` and `.nested` can be combined.
*
* expect({a: {b: [{c: 3}]}}).to.deep.nested.include({'a.b[0]': {c: 3}});
*
* `.own` and `.nested` cannot be combined.
*
* Add `.not` earlier in the chain to negate `.include`.
*
* expect('foobar').to.not.include('taco');
* expect([1, 2, 3]).to.not.include(4);
*
* However, it's dangerous to negate `.include` when the target is an object.
* The problem is that it creates uncertain expectations by asserting that the
* target object doesn't have all of `val`'s key/value pairs but may or may
* not have some of them. It's often best to identify the exact output that's
* expected, and then write an assertion that only accepts that exact output.
*
* When the target object isn't even expected to have `val`'s keys, it's
* often best to assert exactly that.
*
* expect({c: 3}).to.not.have.any.keys('a', 'b'); // Recommended
* expect({c: 3}).to.not.include({a: 1, b: 2}); // Not recommended
*
* When the target object is expected to have `val`'s keys, it's often best to
* assert that each of the properties has its expected value, rather than
* asserting that each property doesn't have one of many unexpected values.
*
* expect({a: 3, b: 4}).to.include({a: 3, b: 4}); // Recommended
* expect({a: 3, b: 4}).to.not.include({a: 1, b: 2}); // Not recommended
*
* `.include` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`.
*
* expect([1, 2, 3]).to.include(4, 'nooo why fail??');
* expect([1, 2, 3], 'nooo why fail??').to.include(4);
*
* `.include` can also be used as a language chain, causing all `.members` and
* `.keys` assertions that follow in the chain to require the target to be a
* superset of the expected set, rather than an identical set. Note that
* `.members` ignores duplicates in the subset when `.include` is added.
*
* // Target object's keys are a superset of ['a', 'b'] but not identical
* expect({a: 1, b: 2, c: 3}).to.include.all.keys('a', 'b');
* expect({a: 1, b: 2, c: 3}).to.not.have.all.keys('a', 'b');
*
* // Target array is a superset of [1, 2] but not identical
* expect([1, 2, 3]).to.include.members([1, 2]);
* expect([1, 2, 3]).to.not.have.members([1, 2]);
*
* // Duplicates in the subset are ignored
* expect([1, 2, 3]).to.include.members([1, 2, 2, 2]);
*
* Note that adding `.any` earlier in the chain causes the `.keys` assertion
* to ignore `.include`.
*
* // Both assertions are identical
* expect({a: 1}).to.include.any.keys('a', 'b');
* expect({a: 1}).to.have.any.keys('a', 'b');
*
* The aliases `.includes`, `.contain`, and `.contains` can be used
* interchangeably with `.include`.
*
* @name include
* @alias contain
* @alias includes
* @alias contains
* @param {Mixed} val
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function SameValueZero(a, b) {
return (_.isNaN(a) && _.isNaN(b)) || a === b;
}
function includeChainingBehavior () {
flag(this, 'contains', true);
}
function include (val, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, objType = _.type(obj).toLowerCase()
, flagMsg = flag(this, 'message')
, negate = flag(this, 'negate')
, ssfi = flag(this, 'ssfi')
, isDeep = flag(this, 'deep')
, descriptor = isDeep ? 'deep ' : '';
flagMsg = flagMsg ? flagMsg + ': ' : '';
var included = false;
switch (objType) {
case 'string':
included = obj.indexOf(val) !== -1;
break;
case 'weakset':
if (isDeep) {
throw new AssertionError(
flagMsg + 'unable to use .deep.include with WeakSet',
undefined,
ssfi
);
}
included = obj.has(val);
break;
case 'map':
var isEql = isDeep ? _.eql : SameValueZero;
obj.forEach(function (item) {
included = included || isEql(item, val);
});
break;
case 'set':
if (isDeep) {
obj.forEach(function (item) {
included = included || _.eql(item, val);
});
} else {
included = obj.has(val);
}
break;
case 'array':
if (isDeep) {
included = obj.some(function (item) {
return _.eql(item, val);
})
} else {
included = obj.indexOf(val) !== -1;
}
break;
default:
// This block is for asserting a subset of properties in an object.
// `_.expectTypes` isn't used here because `.include` should work with
// objects with a custom `@@toStringTag`.
if (val !== Object(val)) {
throw new AssertionError(
flagMsg + 'object tested must be an array, a map, an object,'
+ ' a set, a string, or a weakset, but ' + objType + ' given',
undefined,
ssfi
);
}
var props = Object.keys(val)
, firstErr = null
, numErrs = 0;
props.forEach(function (prop) {
var propAssertion = new Assertion(obj);
_.transferFlags(this, propAssertion, true);
flag(propAssertion, 'lockSsfi', true);
if (!negate || props.length === 1) {
propAssertion.property(prop, val[prop]);
return;
}
try {
propAssertion.property(prop, val[prop]);
} catch (err) {
if (!_.checkError.compatibleConstructor(err, AssertionError)) {
throw err;
}
if (firstErr === null) firstErr = err;
numErrs++;
}
}, this);
// When validating .not.include with multiple properties, we only want
// to throw an assertion error if all of the properties are included,
// in which case we throw the first property assertion error that we
// encountered.
if (negate && props.length > 1 && numErrs === props.length) {
throw firstErr;
}
return;
}
// Assert inclusion in collection or substring in a string.
this.assert(
included
, 'expected #{this} to ' + descriptor + 'include ' + _.inspect(val)
, 'expected #{this} to not ' + descriptor + 'include ' + _.inspect(val));
}
Assertion.addChainableMethod('include', include, includeChainingBehavior);
Assertion.addChainableMethod('contain', include, includeChainingBehavior);
Assertion.addChainableMethod('contains', include, includeChainingBehavior);
Assertion.addChainableMethod('includes', include, includeChainingBehavior);
/**
* ### .ok
*
* Asserts that the target is a truthy value (considered `true` in boolean context).
* However, it's often best to assert that the target is strictly (`===`) or
* deeply equal to its expected value.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.be.ok; // Not recommended
*
* expect(true).to.be.true; // Recommended
* expect(true).to.be.ok; // Not recommended
*
* Add `.not` earlier in the chain to negate `.ok`.
*
* expect(0).to.equal(0); // Recommended
* expect(0).to.not.be.ok; // Not recommended
*
* expect(false).to.be.false; // Recommended
* expect(false).to.not.be.ok; // Not recommended
*
* expect(null).to.be.null; // Recommended
* expect(null).to.not.be.ok; // Not recommended
*
* expect(undefined).to.be.undefined; // Recommended
* expect(undefined).to.not.be.ok; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect(false, 'nooo why fail??').to.be.ok;
*
* @name ok
* @namespace BDD
* @api public
*/
Assertion.addProperty('ok', function () {
this.assert(
flag(this, 'object')
, 'expected #{this} to be truthy'
, 'expected #{this} to be falsy');
});
/**
* ### .true
*
* Asserts that the target is strictly (`===`) equal to `true`.
*
* expect(true).to.be.true;
*
* Add `.not` earlier in the chain to negate `.true`. However, it's often best
* to assert that the target is equal to its expected value, rather than not
* equal to `true`.
*
* expect(false).to.be.false; // Recommended
* expect(false).to.not.be.true; // Not recommended
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.not.be.true; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect(false, 'nooo why fail??').to.be.true;
*
* @name true
* @namespace BDD
* @api public
*/
Assertion.addProperty('true', function () {
this.assert(
true === flag(this, 'object')
, 'expected #{this} to be true'
, 'expected #{this} to be false'
, flag(this, 'negate') ? false : true
);
});
/**
* ### .false
*
* Asserts that the target is strictly (`===`) equal to `false`.
*
* expect(false).to.be.false;
*
* Add `.not` earlier in the chain to negate `.false`. However, it's often
* best to assert that the target is equal to its expected value, rather than
* not equal to `false`.
*
* expect(true).to.be.true; // Recommended
* expect(true).to.not.be.false; // Not recommended
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.not.be.false; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect(true, 'nooo why fail??').to.be.false;
*
* @name false
* @namespace BDD
* @api public
*/
Assertion.addProperty('false', function () {
this.assert(
false === flag(this, 'object')
, 'expected #{this} to be false'
, 'expected #{this} to be true'
, flag(this, 'negate') ? true : false
);
});
/**
* ### .null
*
* Asserts that the target is strictly (`===`) equal to `null`.
*
* expect(null).to.be.null;
*
* Add `.not` earlier in the chain to negate `.null`. However, it's often best
* to assert that the target is equal to its expected value, rather than not
* equal to `null`.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.not.be.null; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect(42, 'nooo why fail??').to.be.null;
*
* @name null
* @namespace BDD
* @api public
*/
Assertion.addProperty('null', function () {
this.assert(
null === flag(this, 'object')
, 'expected #{this} to be null'
, 'expected #{this} not to be null'
);
});
/**
* ### .undefined
*
* Asserts that the target is strictly (`===`) equal to `undefined`.
*
* expect(undefined).to.be.undefined;
*
* Add `.not` earlier in the chain to negate `.undefined`. However, it's often
* best to assert that the target is equal to its expected value, rather than
* not equal to `undefined`.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.not.be.undefined; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect(42, 'nooo why fail??').to.be.undefined;
*
* @name undefined
* @namespace BDD
* @api public
*/
Assertion.addProperty('undefined', function () {
this.assert(
undefined === flag(this, 'object')
, 'expected #{this} to be undefined'
, 'expected #{this} not to be undefined'
);
});
/**
* ### .NaN
*
* Asserts that the target is exactly `NaN`.
*
* expect(NaN).to.be.NaN;
*
* Add `.not` earlier in the chain to negate `.NaN`. However, it's often best
* to assert that the target is equal to its expected value, rather than not
* equal to `NaN`.
*
* expect('foo').to.equal('foo'); // Recommended
* expect('foo').to.not.be.NaN; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect(42, 'nooo why fail??').to.be.NaN;
*
* @name NaN
* @namespace BDD
* @api public
*/
Assertion.addProperty('NaN', function () {
this.assert(
_.isNaN(flag(this, 'object'))
, 'expected #{this} to be NaN'
, 'expected #{this} not to be NaN'
);
});
/**
* ### .exist
*
* Asserts that the target is not strictly (`===`) equal to either `null` or
* `undefined`. However, it's often best to assert that the target is equal to
* its expected value.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.exist; // Not recommended
*
* expect(0).to.equal(0); // Recommended
* expect(0).to.exist; // Not recommended
*
* Add `.not` earlier in the chain to negate `.exist`.
*
* expect(null).to.be.null; // Recommended
* expect(null).to.not.exist; // Not recommended
*
* expect(undefined).to.be.undefined; // Recommended
* expect(undefined).to.not.exist; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect(null, 'nooo why fail??').to.exist;
*
* @name exist
* @namespace BDD
* @api public
*/
Assertion.addProperty('exist', function () {
var val = flag(this, 'object');
this.assert(
val !== null && val !== undefined
, 'expected #{this} to exist'
, 'expected #{this} to not exist'
);
});
/**
* ### .empty
*
* When the target is a string or array, `.empty` asserts that the target's
* `length` property is strictly (`===`) equal to `0`.
*
* expect([]).to.be.empty;
* expect('').to.be.empty;
*
* When the target is a map or set, `.empty` asserts that the target's `size`
* property is strictly equal to `0`.
*
* expect(new Set()).to.be.empty;
* expect(new Map()).to.be.empty;
*
* When the target is a non-function object, `.empty` asserts that the target
* doesn't have any own enumerable properties. Properties with Symbol-based
* keys are excluded from the count.
*
* expect({}).to.be.empty;
*
* Because `.empty` does different things based on the target's type, it's
* important to check the target's type before using `.empty`. See the `.a`
* doc for info on testing a target's type.
*
* expect([]).to.be.an('array').that.is.empty;
*
* Add `.not` earlier in the chain to negate `.empty`. However, it's often
* best to assert that the target contains its expected number of values,
* rather than asserting that it's not empty.
*
* expect([1, 2, 3]).to.have.lengthOf(3); // Recommended
* expect([1, 2, 3]).to.not.be.empty; // Not recommended
*
* expect(new Set([1, 2, 3])).to.have.property('size', 3); // Recommended
* expect(new Set([1, 2, 3])).to.not.be.empty; // Not recommended
*
* expect(Object.keys({a: 1})).to.have.lengthOf(1); // Recommended
* expect({a: 1}).to.not.be.empty; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect([1, 2, 3], 'nooo why fail??').to.be.empty;
*
* @name empty
* @namespace BDD
* @api public
*/
Assertion.addProperty('empty', function () {
var val = flag(this, 'object')
, ssfi = flag(this, 'ssfi')
, flagMsg = flag(this, 'message')
, itemsCount;
flagMsg = flagMsg ? flagMsg + ': ' : '';
switch (_.type(val).toLowerCase()) {
case 'array':
case 'string':
itemsCount = val.length;
break;
case 'map':
case 'set':
itemsCount = val.size;
break;
case 'weakmap':
case 'weakset':
throw new AssertionError(
flagMsg + '.empty was passed a weak collection',
undefined,
ssfi
);
case 'function':
var msg = flagMsg + '.empty was passed a function ' + _.getName(val);
throw new AssertionError(msg.trim(), undefined, ssfi);
default:
if (val !== Object(val)) {
throw new AssertionError(
flagMsg + '.empty was passed non-string primitive ' + _.inspect(val),
undefined,
ssfi
);
}
itemsCount = Object.keys(val).length;
}
this.assert(
0 === itemsCount
, 'expected #{this} to be empty'
, 'expected #{this} not to be empty'
);
});
/**
* ### .arguments
*
* Asserts that the target is an `arguments` object.
*
* function test () {
* expect(arguments).to.be.arguments;
* }
*
* test();
*
* Add `.not` earlier in the chain to negate `.arguments`. However, it's often
* best to assert which type the target is expected to be, rather than
* asserting that its not an `arguments` object.
*
* expect('foo').to.be.a('string'); // Recommended
* expect('foo').to.not.be.arguments; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect({}, 'nooo why fail??').to.be.arguments;
*
* The alias `.Arguments` can be used interchangeably with `.arguments`.
*
* @name arguments
* @alias Arguments
* @namespace BDD
* @api public
*/
function checkArguments () {
var obj = flag(this, 'object')
, type = _.type(obj);
this.assert(
'Arguments' === type
, 'expected #{this} to be arguments but got ' + type
, 'expected #{this} to not be arguments'
);
}
Assertion.addProperty('arguments', checkArguments);
Assertion.addProperty('Arguments', checkArguments);
/**
* ### .equal(val[, msg])
*
* Asserts that the target is strictly (`===`) equal to the given `val`.
*
* expect(1).to.equal(1);
* expect('foo').to.equal('foo');
*
* Add `.deep` earlier in the chain to use deep equality instead. See the
* `deep-eql` project page for info on the deep equality algorithm:
* https://github.com/chaijs/deep-eql.
*
* // Target object deeply (but not strictly) equals `{a: 1}`
* expect({a: 1}).to.deep.equal({a: 1});
* expect({a: 1}).to.not.equal({a: 1});
*
* // Target array deeply (but not strictly) equals `[1, 2]`
* expect([1, 2]).to.deep.equal([1, 2]);
* expect([1, 2]).to.not.equal([1, 2]);
*
* Add `.not` earlier in the chain to negate `.equal`. However, it's often
* best to assert that the target is equal to its expected value, rather than
* not equal to one of countless unexpected values.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.not.equal(2); // Not recommended
*
* `.equal` accepts an optional `msg` argument which is a custom error message
* to show when the assertion fails. The message can also be given as the
* second argument to `expect`.
*
* expect(1).to.equal(2, 'nooo why fail??');
* expect(1, 'nooo why fail??').to.equal(2);
*
* The aliases `.equals` and `eq` can be used interchangeably with `.equal`.
*
* @name equal
* @alias equals
* @alias eq
* @param {Mixed} val
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertEqual (val, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object');
if (flag(this, 'deep')) {
var prevLockSsfi = flag(this, 'lockSsfi');
flag(this, 'lockSsfi', true);
this.eql(val);
flag(this, 'lockSsfi', prevLockSsfi);
} else {
this.assert(
val === obj
, 'expected #{this} to equal #{exp}'
, 'expected #{this} to not equal #{exp}'
, val
, this._obj
, true
);
}
}
Assertion.addMethod('equal', assertEqual);
Assertion.addMethod('equals', assertEqual);
Assertion.addMethod('eq', assertEqual);
/**
* ### .eql(obj[, msg])
*
* Asserts that the target is deeply equal to the given `obj`. See the
* `deep-eql` project page for info on the deep equality algorithm:
* https://github.com/chaijs/deep-eql.
*
* // Target object is deeply (but not strictly) equal to {a: 1}
* expect({a: 1}).to.eql({a: 1}).but.not.equal({a: 1});
*
* // Target array is deeply (but not strictly) equal to [1, 2]
* expect([1, 2]).to.eql([1, 2]).but.not.equal([1, 2]);
*
* Add `.not` earlier in the chain to negate `.eql`. However, it's often best
* to assert that the target is deeply equal to its expected value, rather
* than not deeply equal to one of countless unexpected values.
*
* expect({a: 1}).to.eql({a: 1}); // Recommended
* expect({a: 1}).to.not.eql({b: 2}); // Not recommended
*
* `.eql` accepts an optional `msg` argument which is a custom error message
* to show when the assertion fails. The message can also be given as the
* second argument to `expect`.
*
* expect({a: 1}).to.eql({b: 2}, 'nooo why fail??');
* expect({a: 1}, 'nooo why fail??').to.eql({b: 2});
*
* The alias `.eqls` can be used interchangeably with `.eql`.
*
* The `.deep.equal` assertion is almost identical to `.eql` but with one
* difference: `.deep.equal` causes deep equality comparisons to also be used
* for any other assertions that follow in the chain.
*
* @name eql
* @alias eqls
* @param {Mixed} obj
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertEql(obj, msg) {
if (msg) flag(this, 'message', msg);
this.assert(
_.eql(obj, flag(this, 'object'))
, 'expected #{this} to deeply equal #{exp}'
, 'expected #{this} to not deeply equal #{exp}'
, obj
, this._obj
, true
);
}
Assertion.addMethod('eql', assertEql);
Assertion.addMethod('eqls', assertEql);
/**
* ### .above(n[, msg])
*
* Asserts that the target is a number or a date greater than the given number or date `n` respectively.
* However, it's often best to assert that the target is equal to its expected
* value.
*
* expect(2).to.equal(2); // Recommended
* expect(2).to.be.above(1); // Not recommended
*
* Add `.lengthOf` earlier in the chain to assert that the target's `length`
* or `size` is greater than the given number `n`.
*
* expect('foo').to.have.lengthOf(3); // Recommended
* expect('foo').to.have.lengthOf.above(2); // Not recommended
*
* expect([1, 2, 3]).to.have.lengthOf(3); // Recommended
* expect([1, 2, 3]).to.have.lengthOf.above(2); // Not recommended
*
* Add `.not` earlier in the chain to negate `.above`.
*
* expect(2).to.equal(2); // Recommended
* expect(1).to.not.be.above(2); // Not recommended
*
* `.above` accepts an optional `msg` argument which is a custom error message
* to show when the assertion fails. The message can also be given as the
* second argument to `expect`.
*
* expect(1).to.be.above(2, 'nooo why fail??');
* expect(1, 'nooo why fail??').to.be.above(2);
*
* The aliases `.gt` and `.greaterThan` can be used interchangeably with
* `.above`.
*
* @name above
* @alias gt
* @alias greaterThan
* @param {Number} n
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertAbove (n, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, doLength = flag(this, 'doLength')
, flagMsg = flag(this, 'message')
, msgPrefix = ((flagMsg) ? flagMsg + ': ' : '')
, ssfi = flag(this, 'ssfi')
, objType = _.type(obj).toLowerCase()
, nType = _.type(n).toLowerCase()
, errorMessage
, shouldThrow = true;
if (doLength && objType !== 'map' && objType !== 'set') {
new Assertion(obj, flagMsg, ssfi, true).to.have.property('length');
}
if (!doLength && (objType === 'date' && nType !== 'date')) {
errorMessage = msgPrefix + 'the argument to above must be a date';
} else if (nType !== 'number' && (doLength || objType === 'number')) {
errorMessage = msgPrefix + 'the argument to above must be a number';
} else if (!doLength && (objType !== 'date' && objType !== 'number')) {
var printObj = (objType === 'string') ? "'" + obj + "'" : obj;
errorMessage = msgPrefix + 'expected ' + printObj + ' to be a number or a date';
} else {
shouldThrow = false;
}
if (shouldThrow) {
throw new AssertionError(errorMessage, undefined, ssfi);
}
if (doLength) {
var descriptor = 'length'
, itemsCount;
if (objType === 'map' || objType === 'set') {
descriptor = 'size';
itemsCount = obj.size;
} else {
itemsCount = obj.length;
}
this.assert(
itemsCount > n
, 'expected #{this} to have a ' + descriptor + ' above #{exp} but got #{act}'
, 'expected #{this} to not have a ' + descriptor + ' above #{exp}'
, n
, itemsCount
);
} else {
this.assert(
obj > n
, 'expected #{this} to be above #{exp}'
, 'expected #{this} to be at most #{exp}'
, n
);
}
}
Assertion.addMethod('above', assertAbove);
Assertion.addMethod('gt', assertAbove);
Assertion.addMethod('greaterThan', assertAbove);
/**
* ### .least(n[, msg])
*
* Asserts that the target is a number or a date greater than or equal to the given
* number or date `n` respectively. However, it's often best to assert that the target is equal to
* its expected value.
*
* expect(2).to.equal(2); // Recommended
* expect(2).to.be.at.least(1); // Not recommended
* expect(2).to.be.at.least(2); // Not recommended
*
* Add `.lengthOf` earlier in the chain to assert that the target's `length`
* or `size` is greater than or equal to the given number `n`.
*
* expect('foo').to.have.lengthOf(3); // Recommended
* expect('foo').to.have.lengthOf.at.least(2); // Not recommended
*
* expect([1, 2, 3]).to.have.lengthOf(3); // Recommended
* expect([1, 2, 3]).to.have.lengthOf.at.least(2); // Not recommended
*
* Add `.not` earlier in the chain to negate `.least`.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.not.be.at.least(2); // Not recommended
*
* `.least` accepts an optional `msg` argument which is a custom error message
* to show when the assertion fails. The message can also be given as the
* second argument to `expect`.
*
* expect(1).to.be.at.least(2, 'nooo why fail??');
* expect(1, 'nooo why fail??').to.be.at.least(2);
*
* The alias `.gte` can be used interchangeably with `.least`.
*
* @name least
* @alias gte
* @param {Number} n
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertLeast (n, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, doLength = flag(this, 'doLength')
, flagMsg = flag(this, 'message')
, msgPrefix = ((flagMsg) ? flagMsg + ': ' : '')
, ssfi = flag(this, 'ssfi')
, objType = _.type(obj).toLowerCase()
, nType = _.type(n).toLowerCase()
, errorMessage
, shouldThrow = true;
if (doLength && objType !== 'map' && objType !== 'set') {
new Assertion(obj, flagMsg, ssfi, true).to.have.property('length');
}
if (!doLength && (objType === 'date' && nType !== 'date')) {
errorMessage = msgPrefix + 'the argument to least must be a date';
} else if (nType !== 'number' && (doLength || objType === 'number')) {
errorMessage = msgPrefix + 'the argument to least must be a number';
} else if (!doLength && (objType !== 'date' && objType !== 'number')) {
var printObj = (objType === 'string') ? "'" + obj + "'" : obj;
errorMessage = msgPrefix + 'expected ' + printObj + ' to be a number or a date';
} else {
shouldThrow = false;
}
if (shouldThrow) {
throw new AssertionError(errorMessage, undefined, ssfi);
}
if (doLength) {
var descriptor = 'length'
, itemsCount;
if (objType === 'map' || objType === 'set') {
descriptor = 'size';
itemsCount = obj.size;
} else {
itemsCount = obj.length;
}
this.assert(
itemsCount >= n
, 'expected #{this} to have a ' + descriptor + ' at least #{exp} but got #{act}'
, 'expected #{this} to have a ' + descriptor + ' below #{exp}'
, n
, itemsCount
);
} else {
this.assert(
obj >= n
, 'expected #{this} to be at least #{exp}'
, 'expected #{this} to be below #{exp}'
, n
);
}
}
Assertion.addMethod('least', assertLeast);
Assertion.addMethod('gte', assertLeast);
/**
* ### .below(n[, msg])
*
* Asserts that the target is a number or a date less than the given number or date `n` respectively.
* However, it's often best to assert that the target is equal to its expected
* value.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.be.below(2); // Not recommended
*
* Add `.lengthOf` earlier in the chain to assert that the target's `length`
* or `size` is less than the given number `n`.
*
* expect('foo').to.have.lengthOf(3); // Recommended
* expect('foo').to.have.lengthOf.below(4); // Not recommended
*
* expect([1, 2, 3]).to.have.length(3); // Recommended
* expect([1, 2, 3]).to.have.lengthOf.below(4); // Not recommended
*
* Add `.not` earlier in the chain to negate `.below`.
*
* expect(2).to.equal(2); // Recommended
* expect(2).to.not.be.below(1); // Not recommended
*
* `.below` accepts an optional `msg` argument which is a custom error message
* to show when the assertion fails. The message can also be given as the
* second argument to `expect`.
*
* expect(2).to.be.below(1, 'nooo why fail??');
* expect(2, 'nooo why fail??').to.be.below(1);
*
* The aliases `.lt` and `.lessThan` can be used interchangeably with
* `.below`.
*
* @name below
* @alias lt
* @alias lessThan
* @param {Number} n
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertBelow (n, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, doLength = flag(this, 'doLength')
, flagMsg = flag(this, 'message')
, msgPrefix = ((flagMsg) ? flagMsg + ': ' : '')
, ssfi = flag(this, 'ssfi')
, objType = _.type(obj).toLowerCase()
, nType = _.type(n).toLowerCase()
, errorMessage
, shouldThrow = true;
if (doLength && objType !== 'map' && objType !== 'set') {
new Assertion(obj, flagMsg, ssfi, true).to.have.property('length');
}
if (!doLength && (objType === 'date' && nType !== 'date')) {
errorMessage = msgPrefix + 'the argument to below must be a date';
} else if (nType !== 'number' && (doLength || objType === 'number')) {
errorMessage = msgPrefix + 'the argument to below must be a number';
} else if (!doLength && (objType !== 'date' && objType !== 'number')) {
var printObj = (objType === 'string') ? "'" + obj + "'" : obj;
errorMessage = msgPrefix + 'expected ' + printObj + ' to be a number or a date';
} else {
shouldThrow = false;
}
if (shouldThrow) {
throw new AssertionError(errorMessage, undefined, ssfi);
}
if (doLength) {
var descriptor = 'length'
, itemsCount;
if (objType === 'map' || objType === 'set') {
descriptor = 'size';
itemsCount = obj.size;
} else {
itemsCount = obj.length;
}
this.assert(
itemsCount < n
, 'expected #{this} to have a ' + descriptor + ' below #{exp} but got #{act}'
, 'expected #{this} to not have a ' + descriptor + ' below #{exp}'
, n
, itemsCount
);
} else {
this.assert(
obj < n
, 'expected #{this} to be below #{exp}'
, 'expected #{this} to be at least #{exp}'
, n
);
}
}
Assertion.addMethod('below', assertBelow);
Assertion.addMethod('lt', assertBelow);
Assertion.addMethod('lessThan', assertBelow);
/**
* ### .most(n[, msg])
*
* Asserts that the target is a number or a date less than or equal to the given number
* or date `n` respectively. However, it's often best to assert that the target is equal to its
* expected value.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.be.at.most(2); // Not recommended
* expect(1).to.be.at.most(1); // Not recommended
*
* Add `.lengthOf` earlier in the chain to assert that the target's `length`
* or `size` is less than or equal to the given number `n`.
*
* expect('foo').to.have.lengthOf(3); // Recommended
* expect('foo').to.have.lengthOf.at.most(4); // Not recommended
*
* expect([1, 2, 3]).to.have.lengthOf(3); // Recommended
* expect([1, 2, 3]).to.have.lengthOf.at.most(4); // Not recommended
*
* Add `.not` earlier in the chain to negate `.most`.
*
* expect(2).to.equal(2); // Recommended
* expect(2).to.not.be.at.most(1); // Not recommended
*
* `.most` accepts an optional `msg` argument which is a custom error message
* to show when the assertion fails. The message can also be given as the
* second argument to `expect`.
*
* expect(2).to.be.at.most(1, 'nooo why fail??');
* expect(2, 'nooo why fail??').to.be.at.most(1);
*
* The alias `.lte` can be used interchangeably with `.most`.
*
* @name most
* @alias lte
* @param {Number} n
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertMost (n, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, doLength = flag(this, 'doLength')
, flagMsg = flag(this, 'message')
, msgPrefix = ((flagMsg) ? flagMsg + ': ' : '')
, ssfi = flag(this, 'ssfi')
, objType = _.type(obj).toLowerCase()
, nType = _.type(n).toLowerCase()
, errorMessage
, shouldThrow = true;
if (doLength && objType !== 'map' && objType !== 'set') {
new Assertion(obj, flagMsg, ssfi, true).to.have.property('length');
}
if (!doLength && (objType === 'date' && nType !== 'date')) {
errorMessage = msgPrefix + 'the argument to most must be a date';
} else if (nType !== 'number' && (doLength || objType === 'number')) {
errorMessage = msgPrefix + 'the argument to most must be a number';
} else if (!doLength && (objType !== 'date' && objType !== 'number')) {
var printObj = (objType === 'string') ? "'" + obj + "'" : obj;
errorMessage = msgPrefix + 'expected ' + printObj + ' to be a number or a date';
} else {
shouldThrow = false;
}
if (shouldThrow) {
throw new AssertionError(errorMessage, undefined, ssfi);
}
if (doLength) {
var descriptor = 'length'
, itemsCount;
if (objType === 'map' || objType === 'set') {
descriptor = 'size';
itemsCount = obj.size;
} else {
itemsCount = obj.length;
}
this.assert(
itemsCount <= n
, 'expected #{this} to have a ' + descriptor + ' at most #{exp} but got #{act}'
, 'expected #{this} to have a ' + descriptor + ' above #{exp}'
, n
, itemsCount
);
} else {
this.assert(
obj <= n
, 'expected #{this} to be at most #{exp}'
, 'expected #{this} to be above #{exp}'
, n
);
}
}
Assertion.addMethod('most', assertMost);
Assertion.addMethod('lte', assertMost);
/**
* ### .within(start, finish[, msg])
*
* Asserts that the target is a number or a date greater than or equal to the given
* number or date `start`, and less than or equal to the given number or date `finish` respectively.
* However, it's often best to assert that the target is equal to its expected
* value.
*
* expect(2).to.equal(2); // Recommended
* expect(2).to.be.within(1, 3); // Not recommended
* expect(2).to.be.within(2, 3); // Not recommended
* expect(2).to.be.within(1, 2); // Not recommended
*
* Add `.lengthOf` earlier in the chain to assert that the target's `length`
* or `size` is greater than or equal to the given number `start`, and less
* than or equal to the given number `finish`.
*
* expect('foo').to.have.lengthOf(3); // Recommended
* expect('foo').to.have.lengthOf.within(2, 4); // Not recommended
*
* expect([1, 2, 3]).to.have.lengthOf(3); // Recommended
* expect([1, 2, 3]).to.have.lengthOf.within(2, 4); // Not recommended
*
* Add `.not` earlier in the chain to negate `.within`.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.not.be.within(2, 4); // Not recommended
*
* `.within` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`.
*
* expect(4).to.be.within(1, 3, 'nooo why fail??');
* expect(4, 'nooo why fail??').to.be.within(1, 3);
*
* @name within
* @param {Number} start lower bound inclusive
* @param {Number} finish upper bound inclusive
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
Assertion.addMethod('within', function (start, finish, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, doLength = flag(this, 'doLength')
, flagMsg = flag(this, 'message')
, msgPrefix = ((flagMsg) ? flagMsg + ': ' : '')
, ssfi = flag(this, 'ssfi')
, objType = _.type(obj).toLowerCase()
, startType = _.type(start).toLowerCase()
, finishType = _.type(finish).toLowerCase()
, errorMessage
, shouldThrow = true
, range = (startType === 'date' && finishType === 'date')
? start.toUTCString() + '..' + finish.toUTCString()
: start + '..' + finish;
if (doLength && objType !== 'map' && objType !== 'set') {
new Assertion(obj, flagMsg, ssfi, true).to.have.property('length');
}
if (!doLength && (objType === 'date' && (startType !== 'date' || finishType !== 'date'))) {
errorMessage = msgPrefix + 'the arguments to within must be dates';
} else if ((startType !== 'number' || finishType !== 'number') && (doLength || objType === 'number')) {
errorMessage = msgPrefix + 'the arguments to within must be numbers';
} else if (!doLength && (objType !== 'date' && objType !== 'number')) {
var printObj = (objType === 'string') ? "'" + obj + "'" : obj;
errorMessage = msgPrefix + 'expected ' + printObj + ' to be a number or a date';
} else {
shouldThrow = false;
}
if (shouldThrow) {
throw new AssertionError(errorMessage, undefined, ssfi);
}
if (doLength) {
var descriptor = 'length'
, itemsCount;
if (objType === 'map' || objType === 'set') {
descriptor = 'size';
itemsCount = obj.size;
} else {
itemsCount = obj.length;
}
this.assert(
itemsCount >= start && itemsCount <= finish
, 'expected #{this} to have a ' + descriptor + ' within ' + range
, 'expected #{this} to not have a ' + descriptor + ' within ' + range
);
} else {
this.assert(
obj >= start && obj <= finish
, 'expected #{this} to be within ' + range
, 'expected #{this} to not be within ' + range
);
}
});
/**
* ### .instanceof(constructor[, msg])
*
* Asserts that the target is an instance of the given `constructor`.
*
* function Cat () { }
*
* expect(new Cat()).to.be.an.instanceof(Cat);
* expect([1, 2]).to.be.an.instanceof(Array);
*
* Add `.not` earlier in the chain to negate `.instanceof`.
*
* expect({a: 1}).to.not.be.an.instanceof(Array);
*
* `.instanceof` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`.
*
* expect(1).to.be.an.instanceof(Array, 'nooo why fail??');
* expect(1, 'nooo why fail??').to.be.an.instanceof(Array);
*
* Due to limitations in ES5, `.instanceof` may not always work as expected
* when using a transpiler such as Babel or TypeScript. In particular, it may
* produce unexpected results when subclassing built-in object such as
* `Array`, `Error`, and `Map`. See your transpiler's docs for details:
*
* - ([Babel](https://babeljs.io/docs/usage/caveats/#classes))
* - ([TypeScript](https://github.com/Microsoft/TypeScript/wiki/Breaking-Changes#extending-built-ins-like-error-array-and-map-may-no-longer-work))
*
* The alias `.instanceOf` can be used interchangeably with `.instanceof`.
*
* @name instanceof
* @param {Constructor} constructor
* @param {String} msg _optional_
* @alias instanceOf
* @namespace BDD
* @api public
*/
function assertInstanceOf (constructor, msg) {
if (msg) flag(this, 'message', msg);
var target = flag(this, 'object')
var ssfi = flag(this, 'ssfi');
var flagMsg = flag(this, 'message');
try {
var isInstanceOf = target instanceof constructor;
} catch (err) {
if (err instanceof TypeError) {
flagMsg = flagMsg ? flagMsg + ': ' : '';
throw new AssertionError(
flagMsg + 'The instanceof assertion needs a constructor but '
+ _.type(constructor) + ' was given.',
undefined,
ssfi
);
}
throw err;
}
var name = _.getName(constructor);
if (name === null) {
name = 'an unnamed constructor';
}
this.assert(
isInstanceOf
, 'expected #{this} to be an instance of ' + name
, 'expected #{this} to not be an instance of ' + name
);
};
Assertion.addMethod('instanceof', assertInstanceOf);
Assertion.addMethod('instanceOf', assertInstanceOf);
/**
* ### .property(name[, val[, msg]])
*
* Asserts that the target has a property with the given key `name`.
*
* expect({a: 1}).to.have.property('a');
*
* When `val` is provided, `.property` also asserts that the property's value
* is equal to the given `val`.
*
* expect({a: 1}).to.have.property('a', 1);
*
* By default, strict (`===`) equality is used. Add `.deep` earlier in the
* chain to use deep equality instead. See the `deep-eql` project page for
* info on the deep equality algorithm: https://github.com/chaijs/deep-eql.
*
* // Target object deeply (but not strictly) has property `x: {a: 1}`
* expect({x: {a: 1}}).to.have.deep.property('x', {a: 1});
* expect({x: {a: 1}}).to.not.have.property('x', {a: 1});
*
* The target's enumerable and non-enumerable properties are always included
* in the search. By default, both own and inherited properties are included.
* Add `.own` earlier in the chain to exclude inherited properties from the
* search.
*
* Object.prototype.b = 2;
*
* expect({a: 1}).to.have.own.property('a');
* expect({a: 1}).to.have.own.property('a', 1);
* expect({a: 1}).to.have.property('b');
* expect({a: 1}).to.not.have.own.property('b');
*
* `.deep` and `.own` can be combined.
*
* expect({x: {a: 1}}).to.have.deep.own.property('x', {a: 1});
*
* Add `.nested` earlier in the chain to enable dot- and bracket-notation when
* referencing nested properties.
*
* expect({a: {b: ['x', 'y']}}).to.have.nested.property('a.b[1]');
* expect({a: {b: ['x', 'y']}}).to.have.nested.property('a.b[1]', 'y');
*
* If `.` or `[]` are part of an actual property name, they can be escaped by
* adding two backslashes before them.
*
* expect({'.a': {'[b]': 'x'}}).to.have.nested.property('\\.a.\\[b\\]');
*
* `.deep` and `.nested` can be combined.
*
* expect({a: {b: [{c: 3}]}})
* .to.have.deep.nested.property('a.b[0]', {c: 3});
*
* `.own` and `.nested` cannot be combined.
*
* Add `.not` earlier in the chain to negate `.property`.
*
* expect({a: 1}).to.not.have.property('b');
*
* However, it's dangerous to negate `.property` when providing `val`. The
* problem is that it creates uncertain expectations by asserting that the
* target either doesn't have a property with the given key `name`, or that it
* does have a property with the given key `name` but its value isn't equal to
* the given `val`. It's often best to identify the exact output that's
* expected, and then write an assertion that only accepts that exact output.
*
* When the target isn't expected to have a property with the given key
* `name`, it's often best to assert exactly that.
*
* expect({b: 2}).to.not.have.property('a'); // Recommended
* expect({b: 2}).to.not.have.property('a', 1); // Not recommended
*
* When the target is expected to have a property with the given key `name`,
* it's often best to assert that the property has its expected value, rather
* than asserting that it doesn't have one of many unexpected values.
*
* expect({a: 3}).to.have.property('a', 3); // Recommended
* expect({a: 3}).to.not.have.property('a', 1); // Not recommended
*
* `.property` changes the target of any assertions that follow in the chain
* to be the value of the property from the original target object.
*
* expect({a: 1}).to.have.property('a').that.is.a('number');
*
* `.property` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`. When not providing `val`, only use the
* second form.
*
* // Recommended
* expect({a: 1}).to.have.property('a', 2, 'nooo why fail??');
* expect({a: 1}, 'nooo why fail??').to.have.property('a', 2);
* expect({a: 1}, 'nooo why fail??').to.have.property('b');
*
* // Not recommended
* expect({a: 1}).to.have.property('b', undefined, 'nooo why fail??');
*
* The above assertion isn't the same thing as not providing `val`. Instead,
* it's asserting that the target object has a `b` property that's equal to
* `undefined`.
*
* The assertions `.ownProperty` and `.haveOwnProperty` can be used
* interchangeably with `.own.property`.
*
* @name property
* @param {String} name
* @param {Mixed} val (optional)
* @param {String} msg _optional_
* @returns value of property for chaining
* @namespace BDD
* @api public
*/
function assertProperty (name, val, msg) {
if (msg) flag(this, 'message', msg);
var isNested = flag(this, 'nested')
, isOwn = flag(this, 'own')
, flagMsg = flag(this, 'message')
, obj = flag(this, 'object')
, ssfi = flag(this, 'ssfi')
, nameType = typeof name;
flagMsg = flagMsg ? flagMsg + ': ' : '';
if (isNested) {
if (nameType !== 'string') {
throw new AssertionError(
flagMsg + 'the argument to property must be a string when using nested syntax',
undefined,
ssfi
);
}
} else {
if (nameType !== 'string' && nameType !== 'number' && nameType !== 'symbol') {
throw new AssertionError(
flagMsg + 'the argument to property must be a string, number, or symbol',
undefined,
ssfi
);
}
}
if (isNested && isOwn) {
throw new AssertionError(
flagMsg + 'The "nested" and "own" flags cannot be combined.',
undefined,
ssfi
);
}
if (obj === null || obj === undefined) {
throw new AssertionError(
flagMsg + 'Target cannot be null or undefined.',
undefined,
ssfi
);
}
var isDeep = flag(this, 'deep')
, negate = flag(this, 'negate')
, pathInfo = isNested ? _.getPathInfo(obj, name) : null
, value = isNested ? pathInfo.value : obj[name];
var descriptor = '';
if (isDeep) descriptor += 'deep ';
if (isOwn) descriptor += 'own ';
if (isNested) descriptor += 'nested ';
descriptor += 'property ';
var hasProperty;
if (isOwn) hasProperty = Object.prototype.hasOwnProperty.call(obj, name);
else if (isNested) hasProperty = pathInfo.exists;
else hasProperty = _.hasProperty(obj, name);
// When performing a negated assertion for both name and val, merely having
// a property with the given name isn't enough to cause the assertion to
// fail. It must both have a property with the given name, and the value of
// that property must equal the given val. Therefore, skip this assertion in
// favor of the next.
if (!negate || arguments.length === 1) {
this.assert(
hasProperty
, 'expected #{this} to have ' + descriptor + _.inspect(name)
, 'expected #{this} to not have ' + descriptor + _.inspect(name));
}
if (arguments.length > 1) {
this.assert(
hasProperty && (isDeep ? _.eql(val, value) : val === value)
, 'expected #{this} to have ' + descriptor + _.inspect(name) + ' of #{exp}, but got #{act}'
, 'expected #{this} to not have ' + descriptor + _.inspect(name) + ' of #{act}'
, val
, value
);
}
flag(this, 'object', value);
}
Assertion.addMethod('property', assertProperty);
function assertOwnProperty (name, value, msg) {
flag(this, 'own', true);
assertProperty.apply(this, arguments);
}
Assertion.addMethod('ownProperty', assertOwnProperty);
Assertion.addMethod('haveOwnProperty', assertOwnProperty);
/**
* ### .ownPropertyDescriptor(name[, descriptor[, msg]])
*
* Asserts that the target has its own property descriptor with the given key
* `name`. Enumerable and non-enumerable properties are included in the
* search.
*
* expect({a: 1}).to.have.ownPropertyDescriptor('a');
*
* When `descriptor` is provided, `.ownPropertyDescriptor` also asserts that
* the property's descriptor is deeply equal to the given `descriptor`. See
* the `deep-eql` project page for info on the deep equality algorithm:
* https://github.com/chaijs/deep-eql.
*
* expect({a: 1}).to.have.ownPropertyDescriptor('a', {
* configurable: true,
* enumerable: true,
* writable: true,
* value: 1,
* });
*
* Add `.not` earlier in the chain to negate `.ownPropertyDescriptor`.
*
* expect({a: 1}).to.not.have.ownPropertyDescriptor('b');
*
* However, it's dangerous to negate `.ownPropertyDescriptor` when providing
* a `descriptor`. The problem is that it creates uncertain expectations by
* asserting that the target either doesn't have a property descriptor with
* the given key `name`, or that it does have a property descriptor with the
* given key `name` but its not deeply equal to the given `descriptor`. It's
* often best to identify the exact output that's expected, and then write an
* assertion that only accepts that exact output.
*
* When the target isn't expected to have a property descriptor with the given
* key `name`, it's often best to assert exactly that.
*
* // Recommended
* expect({b: 2}).to.not.have.ownPropertyDescriptor('a');
*
* // Not recommended
* expect({b: 2}).to.not.have.ownPropertyDescriptor('a', {
* configurable: true,
* enumerable: true,
* writable: true,
* value: 1,
* });
*
* When the target is expected to have a property descriptor with the given
* key `name`, it's often best to assert that the property has its expected
* descriptor, rather than asserting that it doesn't have one of many
* unexpected descriptors.
*
* // Recommended
* expect({a: 3}).to.have.ownPropertyDescriptor('a', {
* configurable: true,
* enumerable: true,
* writable: true,
* value: 3,
* });
*
* // Not recommended
* expect({a: 3}).to.not.have.ownPropertyDescriptor('a', {
* configurable: true,
* enumerable: true,
* writable: true,
* value: 1,
* });
*
* `.ownPropertyDescriptor` changes the target of any assertions that follow
* in the chain to be the value of the property descriptor from the original
* target object.
*
* expect({a: 1}).to.have.ownPropertyDescriptor('a')
* .that.has.property('enumerable', true);
*
* `.ownPropertyDescriptor` accepts an optional `msg` argument which is a
* custom error message to show when the assertion fails. The message can also
* be given as the second argument to `expect`. When not providing
* `descriptor`, only use the second form.
*
* // Recommended
* expect({a: 1}).to.have.ownPropertyDescriptor('a', {
* configurable: true,
* enumerable: true,
* writable: true,
* value: 2,
* }, 'nooo why fail??');
*
* // Recommended
* expect({a: 1}, 'nooo why fail??').to.have.ownPropertyDescriptor('a', {
* configurable: true,
* enumerable: true,
* writable: true,
* value: 2,
* });
*
* // Recommended
* expect({a: 1}, 'nooo why fail??').to.have.ownPropertyDescriptor('b');
*
* // Not recommended
* expect({a: 1})
* .to.have.ownPropertyDescriptor('b', undefined, 'nooo why fail??');
*
* The above assertion isn't the same thing as not providing `descriptor`.
* Instead, it's asserting that the target object has a `b` property
* descriptor that's deeply equal to `undefined`.
*
* The alias `.haveOwnPropertyDescriptor` can be used interchangeably with
* `.ownPropertyDescriptor`.
*
* @name ownPropertyDescriptor
* @alias haveOwnPropertyDescriptor
* @param {String} name
* @param {Object} descriptor _optional_
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertOwnPropertyDescriptor (name, descriptor, msg) {
if (typeof descriptor === 'string') {
msg = descriptor;
descriptor = null;
}
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object');
var actualDescriptor = Object.getOwnPropertyDescriptor(Object(obj), name);
if (actualDescriptor && descriptor) {
this.assert(
_.eql(descriptor, actualDescriptor)
, 'expected the own property descriptor for ' + _.inspect(name) + ' on #{this} to match ' + _.inspect(descriptor) + ', got ' + _.inspect(actualDescriptor)
, 'expected the own property descriptor for ' + _.inspect(name) + ' on #{this} to not match ' + _.inspect(descriptor)
, descriptor
, actualDescriptor
, true
);
} else {
this.assert(
actualDescriptor
, 'expected #{this} to have an own property descriptor for ' + _.inspect(name)
, 'expected #{this} to not have an own property descriptor for ' + _.inspect(name)
);
}
flag(this, 'object', actualDescriptor);
}
Assertion.addMethod('ownPropertyDescriptor', assertOwnPropertyDescriptor);
Assertion.addMethod('haveOwnPropertyDescriptor', assertOwnPropertyDescriptor);
/**
* ### .lengthOf(n[, msg])
*
* Asserts that the target's `length` or `size` is equal to the given number
* `n`.
*
* expect([1, 2, 3]).to.have.lengthOf(3);
* expect('foo').to.have.lengthOf(3);
* expect(new Set([1, 2, 3])).to.have.lengthOf(3);
* expect(new Map([['a', 1], ['b', 2], ['c', 3]])).to.have.lengthOf(3);
*
* Add `.not` earlier in the chain to negate `.lengthOf`. However, it's often
* best to assert that the target's `length` property is equal to its expected
* value, rather than not equal to one of many unexpected values.
*
* expect('foo').to.have.lengthOf(3); // Recommended
* expect('foo').to.not.have.lengthOf(4); // Not recommended
*
* `.lengthOf` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`.
*
* expect([1, 2, 3]).to.have.lengthOf(2, 'nooo why fail??');
* expect([1, 2, 3], 'nooo why fail??').to.have.lengthOf(2);
*
* `.lengthOf` can also be used as a language chain, causing all `.above`,
* `.below`, `.least`, `.most`, and `.within` assertions that follow in the
* chain to use the target's `length` property as the target. However, it's
* often best to assert that the target's `length` property is equal to its
* expected length, rather than asserting that its `length` property falls
* within some range of values.
*
* // Recommended
* expect([1, 2, 3]).to.have.lengthOf(3);
*
* // Not recommended
* expect([1, 2, 3]).to.have.lengthOf.above(2);
* expect([1, 2, 3]).to.have.lengthOf.below(4);
* expect([1, 2, 3]).to.have.lengthOf.at.least(3);
* expect([1, 2, 3]).to.have.lengthOf.at.most(3);
* expect([1, 2, 3]).to.have.lengthOf.within(2,4);
*
* Due to a compatibility issue, the alias `.length` can't be chained directly
* off of an uninvoked method such as `.a`. Therefore, `.length` can't be used
* interchangeably with `.lengthOf` in every situation. It's recommended to
* always use `.lengthOf` instead of `.length`.
*
* expect([1, 2, 3]).to.have.a.length(3); // incompatible; throws error
* expect([1, 2, 3]).to.have.a.lengthOf(3); // passes as expected
*
* @name lengthOf
* @alias length
* @param {Number} n
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertLengthChain () {
flag(this, 'doLength', true);
}
function assertLength (n, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, objType = _.type(obj).toLowerCase()
, flagMsg = flag(this, 'message')
, ssfi = flag(this, 'ssfi')
, descriptor = 'length'
, itemsCount;
switch (objType) {
case 'map':
case 'set':
descriptor = 'size';
itemsCount = obj.size;
break;
default:
new Assertion(obj, flagMsg, ssfi, true).to.have.property('length');
itemsCount = obj.length;
}
this.assert(
itemsCount == n
, 'expected #{this} to have a ' + descriptor + ' of #{exp} but got #{act}'
, 'expected #{this} to not have a ' + descriptor + ' of #{act}'
, n
, itemsCount
);
}
Assertion.addChainableMethod('length', assertLength, assertLengthChain);
Assertion.addChainableMethod('lengthOf', assertLength, assertLengthChain);
/**
* ### .match(re[, msg])
*
* Asserts that the target matches the given regular expression `re`.
*
* expect('foobar').to.match(/^foo/);
*
* Add `.not` earlier in the chain to negate `.match`.
*
* expect('foobar').to.not.match(/taco/);
*
* `.match` accepts an optional `msg` argument which is a custom error message
* to show when the assertion fails. The message can also be given as the
* second argument to `expect`.
*
* expect('foobar').to.match(/taco/, 'nooo why fail??');
* expect('foobar', 'nooo why fail??').to.match(/taco/);
*
* The alias `.matches` can be used interchangeably with `.match`.
*
* @name match
* @alias matches
* @param {RegExp} re
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertMatch(re, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object');
this.assert(
re.exec(obj)
, 'expected #{this} to match ' + re
, 'expected #{this} not to match ' + re
);
}
Assertion.addMethod('match', assertMatch);
Assertion.addMethod('matches', assertMatch);
/**
* ### .string(str[, msg])
*
* Asserts that the target string contains the given substring `str`.
*
* expect('foobar').to.have.string('bar');
*
* Add `.not` earlier in the chain to negate `.string`.
*
* expect('foobar').to.not.have.string('taco');
*
* `.string` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`.
*
* expect('foobar').to.have.string('taco', 'nooo why fail??');
* expect('foobar', 'nooo why fail??').to.have.string('taco');
*
* @name string
* @param {String} str
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
Assertion.addMethod('string', function (str, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, flagMsg = flag(this, 'message')
, ssfi = flag(this, 'ssfi');
new Assertion(obj, flagMsg, ssfi, true).is.a('string');
this.assert(
~obj.indexOf(str)
, 'expected #{this} to contain ' + _.inspect(str)
, 'expected #{this} to not contain ' + _.inspect(str)
);
});
/**
* ### .keys(key1[, key2[, ...]])
*
* Asserts that the target object, array, map, or set has the given keys. Only
* the target's own inherited properties are included in the search.
*
* When the target is an object or array, keys can be provided as one or more
* string arguments, a single array argument, or a single object argument. In
* the latter case, only the keys in the given object matter; the values are
* ignored.
*
* expect({a: 1, b: 2}).to.have.all.keys('a', 'b');
* expect(['x', 'y']).to.have.all.keys(0, 1);
*
* expect({a: 1, b: 2}).to.have.all.keys(['a', 'b']);
* expect(['x', 'y']).to.have.all.keys([0, 1]);
*
* expect({a: 1, b: 2}).to.have.all.keys({a: 4, b: 5}); // ignore 4 and 5
* expect(['x', 'y']).to.have.all.keys({0: 4, 1: 5}); // ignore 4 and 5
*
* When the target is a map or set, each key must be provided as a separate
* argument.
*
* expect(new Map([['a', 1], ['b', 2]])).to.have.all.keys('a', 'b');
* expect(new Set(['a', 'b'])).to.have.all.keys('a', 'b');
*
* Because `.keys` does different things based on the target's type, it's
* important to check the target's type before using `.keys`. See the `.a` doc
* for info on testing a target's type.
*
* expect({a: 1, b: 2}).to.be.an('object').that.has.all.keys('a', 'b');
*
* By default, strict (`===`) equality is used to compare keys of maps and
* sets. Add `.deep` earlier in the chain to use deep equality instead. See
* the `deep-eql` project page for info on the deep equality algorithm:
* https://github.com/chaijs/deep-eql.
*
* // Target set deeply (but not strictly) has key `{a: 1}`
* expect(new Set([{a: 1}])).to.have.all.deep.keys([{a: 1}]);
* expect(new Set([{a: 1}])).to.not.have.all.keys([{a: 1}]);
*
* By default, the target must have all of the given keys and no more. Add
* `.any` earlier in the chain to only require that the target have at least
* one of the given keys. Also, add `.not` earlier in the chain to negate
* `.keys`. It's often best to add `.any` when negating `.keys`, and to use
* `.all` when asserting `.keys` without negation.
*
* When negating `.keys`, `.any` is preferred because `.not.any.keys` asserts
* exactly what's expected of the output, whereas `.not.all.keys` creates
* uncertain expectations.
*
* // Recommended; asserts that target doesn't have any of the given keys
* expect({a: 1, b: 2}).to.not.have.any.keys('c', 'd');
*
* // Not recommended; asserts that target doesn't have all of the given
* // keys but may or may not have some of them
* expect({a: 1, b: 2}).to.not.have.all.keys('c', 'd');
*
* When asserting `.keys` without negation, `.all` is preferred because
* `.all.keys` asserts exactly what's expected of the output, whereas
* `.any.keys` creates uncertain expectations.
*
* // Recommended; asserts that target has all the given keys
* expect({a: 1, b: 2}).to.have.all.keys('a', 'b');
*
* // Not recommended; asserts that target has at least one of the given
* // keys but may or may not have more of them
* expect({a: 1, b: 2}).to.have.any.keys('a', 'b');
*
* Note that `.all` is used by default when neither `.all` nor `.any` appear
* earlier in the chain. However, it's often best to add `.all` anyway because
* it improves readability.
*
* // Both assertions are identical
* expect({a: 1, b: 2}).to.have.all.keys('a', 'b'); // Recommended
* expect({a: 1, b: 2}).to.have.keys('a', 'b'); // Not recommended
*
* Add `.include` earlier in the chain to require that the target's keys be a
* superset of the expected keys, rather than identical sets.
*
* // Target object's keys are a superset of ['a', 'b'] but not identical
* expect({a: 1, b: 2, c: 3}).to.include.all.keys('a', 'b');
* expect({a: 1, b: 2, c: 3}).to.not.have.all.keys('a', 'b');
*
* However, if `.any` and `.include` are combined, only the `.any` takes
* effect. The `.include` is ignored in this case.
*
* // Both assertions are identical
* expect({a: 1}).to.have.any.keys('a', 'b');
* expect({a: 1}).to.include.any.keys('a', 'b');
*
* A custom error message can be given as the second argument to `expect`.
*
* expect({a: 1}, 'nooo why fail??').to.have.key('b');
*
* The alias `.key` can be used interchangeably with `.keys`.
*
* @name keys
* @alias key
* @param {...String|Array|Object} keys
* @namespace BDD
* @api public
*/
function assertKeys (keys) {
var obj = flag(this, 'object')
, objType = _.type(obj)
, keysType = _.type(keys)
, ssfi = flag(this, 'ssfi')
, isDeep = flag(this, 'deep')
, str
, deepStr = ''
, actual
, ok = true
, flagMsg = flag(this, 'message');
flagMsg = flagMsg ? flagMsg + ': ' : '';
var mixedArgsMsg = flagMsg + 'when testing keys against an object or an array you must give a single Array|Object|String argument or multiple String arguments';
if (objType === 'Map' || objType === 'Set') {
deepStr = isDeep ? 'deeply ' : '';
actual = [];
// Map and Set '.keys' aren't supported in IE 11. Therefore, use .forEach.
obj.forEach(function (val, key) { actual.push(key) });
if (keysType !== 'Array') {
keys = Array.prototype.slice.call(arguments);
}
} else {
actual = _.getOwnEnumerableProperties(obj);
switch (keysType) {
case 'Array':
if (arguments.length > 1) {
throw new AssertionError(mixedArgsMsg, undefined, ssfi);
}
break;
case 'Object':
if (arguments.length > 1) {
throw new AssertionError(mixedArgsMsg, undefined, ssfi);
}
keys = Object.keys(keys);
break;
default:
keys = Array.prototype.slice.call(arguments);
}
// Only stringify non-Symbols because Symbols would become "Symbol()"
keys = keys.map(function (val) {
return typeof val === 'symbol' ? val : String(val);
});
}
if (!keys.length) {
throw new AssertionError(flagMsg + 'keys required', undefined, ssfi);
}
var len = keys.length
, any = flag(this, 'any')
, all = flag(this, 'all')
, expected = keys;
if (!any && !all) {
all = true;
}
// Has any
if (any) {
ok = expected.some(function(expectedKey) {
return actual.some(function(actualKey) {
if (isDeep) {
return _.eql(expectedKey, actualKey);
} else {
return expectedKey === actualKey;
}
});
});
}
// Has all
if (all) {
ok = expected.every(function(expectedKey) {
return actual.some(function(actualKey) {
if (isDeep) {
return _.eql(expectedKey, actualKey);
} else {
return expectedKey === actualKey;
}
});
});
if (!flag(this, 'contains')) {
ok = ok && keys.length == actual.length;
}
}
// Key string
if (len > 1) {
keys = keys.map(function(key) {
return _.inspect(key);
});
var last = keys.pop();
if (all) {
str = keys.join(', ') + ', and ' + last;
}
if (any) {
str = keys.join(', ') + ', or ' + last;
}
} else {
str = _.inspect(keys[0]);
}
// Form
str = (len > 1 ? 'keys ' : 'key ') + str;
// Have / include
str = (flag(this, 'contains') ? 'contain ' : 'have ') + str;
// Assertion
this.assert(
ok
, 'expected #{this} to ' + deepStr + str
, 'expected #{this} to not ' + deepStr + str
, expected.slice(0).sort(_.compareByInspect)
, actual.sort(_.compareByInspect)
, true
);
}
Assertion.addMethod('keys', assertKeys);
Assertion.addMethod('key', assertKeys);
/**
* ### .throw([errorLike], [errMsgMatcher], [msg])
*
* When no arguments are provided, `.throw` invokes the target function and
* asserts that an error is thrown.
*
* var badFn = function () { throw new TypeError('Illegal salmon!'); };
*
* expect(badFn).to.throw();
*
* When one argument is provided, and it's an error constructor, `.throw`
* invokes the target function and asserts that an error is thrown that's an
* instance of that error constructor.
*
* var badFn = function () { throw new TypeError('Illegal salmon!'); };
*
* expect(badFn).to.throw(TypeError);
*
* When one argument is provided, and it's an error instance, `.throw` invokes
* the target function and asserts that an error is thrown that's strictly
* (`===`) equal to that error instance.
*
* var err = new TypeError('Illegal salmon!');
* var badFn = function () { throw err; };
*
* expect(badFn).to.throw(err);
*
* When one argument is provided, and it's a string, `.throw` invokes the
* target function and asserts that an error is thrown with a message that
* contains that string.
*
* var badFn = function () { throw new TypeError('Illegal salmon!'); };
*
* expect(badFn).to.throw('salmon');
*
* When one argument is provided, and it's a regular expression, `.throw`
* invokes the target function and asserts that an error is thrown with a
* message that matches that regular expression.
*
* var badFn = function () { throw new TypeError('Illegal salmon!'); };
*
* expect(badFn).to.throw(/salmon/);
*
* When two arguments are provided, and the first is an error instance or
* constructor, and the second is a string or regular expression, `.throw`
* invokes the function and asserts that an error is thrown that fulfills both
* conditions as described above.
*
* var err = new TypeError('Illegal salmon!');
* var badFn = function () { throw err; };
*
* expect(badFn).to.throw(TypeError, 'salmon');
* expect(badFn).to.throw(TypeError, /salmon/);
* expect(badFn).to.throw(err, 'salmon');
* expect(badFn).to.throw(err, /salmon/);
*
* Add `.not` earlier in the chain to negate `.throw`.
*
* var goodFn = function () {};
*
* expect(goodFn).to.not.throw();
*
* However, it's dangerous to negate `.throw` when providing any arguments.
* The problem is that it creates uncertain expectations by asserting that the
* target either doesn't throw an error, or that it throws an error but of a
* different type than the given type, or that it throws an error of the given
* type but with a message that doesn't include the given string. It's often
* best to identify the exact output that's expected, and then write an
* assertion that only accepts that exact output.
*
* When the target isn't expected to throw an error, it's often best to assert
* exactly that.
*
* var goodFn = function () {};
*
* expect(goodFn).to.not.throw(); // Recommended
* expect(goodFn).to.not.throw(ReferenceError, 'x'); // Not recommended
*
* When the target is expected to throw an error, it's often best to assert
* that the error is of its expected type, and has a message that includes an
* expected string, rather than asserting that it doesn't have one of many
* unexpected types, and doesn't have a message that includes some string.
*
* var badFn = function () { throw new TypeError('Illegal salmon!'); };
*
* expect(badFn).to.throw(TypeError, 'salmon'); // Recommended
* expect(badFn).to.not.throw(ReferenceError, 'x'); // Not recommended
*
* `.throw` changes the target of any assertions that follow in the chain to
* be the error object that's thrown.
*
* var err = new TypeError('Illegal salmon!');
* err.code = 42;
* var badFn = function () { throw err; };
*
* expect(badFn).to.throw(TypeError).with.property('code', 42);
*
* `.throw` accepts an optional `msg` argument which is a custom error message
* to show when the assertion fails. The message can also be given as the
* second argument to `expect`. When not providing two arguments, always use
* the second form.
*
* var goodFn = function () {};
*
* expect(goodFn).to.throw(TypeError, 'x', 'nooo why fail??');
* expect(goodFn, 'nooo why fail??').to.throw();
*
* Due to limitations in ES5, `.throw` may not always work as expected when
* using a transpiler such as Babel or TypeScript. In particular, it may
* produce unexpected results when subclassing the built-in `Error` object and
* then passing the subclassed constructor to `.throw`. See your transpiler's
* docs for details:
*
* - ([Babel](https://babeljs.io/docs/usage/caveats/#classes))
* - ([TypeScript](https://github.com/Microsoft/TypeScript/wiki/Breaking-Changes#extending-built-ins-like-error-array-and-map-may-no-longer-work))
*
* Beware of some common mistakes when using the `throw` assertion. One common
* mistake is to accidentally invoke the function yourself instead of letting
* the `throw` assertion invoke the function for you. For example, when
* testing if a function named `fn` throws, provide `fn` instead of `fn()` as
* the target for the assertion.
*
* expect(fn).to.throw(); // Good! Tests `fn` as desired
* expect(fn()).to.throw(); // Bad! Tests result of `fn()`, not `fn`
*
* If you need to assert that your function `fn` throws when passed certain
* arguments, then wrap a call to `fn` inside of another function.
*
* expect(function () { fn(42); }).to.throw(); // Function expression
* expect(() => fn(42)).to.throw(); // ES6 arrow function
*
* Another common mistake is to provide an object method (or any stand-alone
* function that relies on `this`) as the target of the assertion. Doing so is
* problematic because the `this` context will be lost when the function is
* invoked by `.throw`; there's no way for it to know what `this` is supposed
* to be. There are two ways around this problem. One solution is to wrap the
* method or function call inside of another function. Another solution is to
* use `bind`.
*
* expect(function () { cat.meow(); }).to.throw(); // Function expression
* expect(() => cat.meow()).to.throw(); // ES6 arrow function
* expect(cat.meow.bind(cat)).to.throw(); // Bind
*
* Finally, it's worth mentioning that it's a best practice in JavaScript to
* only throw `Error` and derivatives of `Error` such as `ReferenceError`,
* `TypeError`, and user-defined objects that extend `Error`. No other type of
* value will generate a stack trace when initialized. With that said, the
* `throw` assertion does technically support any type of value being thrown,
* not just `Error` and its derivatives.
*
* The aliases `.throws` and `.Throw` can be used interchangeably with
* `.throw`.
*
* @name throw
* @alias throws
* @alias Throw
* @param {Error|ErrorConstructor} errorLike
* @param {String|RegExp} errMsgMatcher error message
* @param {String} msg _optional_
* @see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error#Error_types
* @returns error for chaining (null if no error)
* @namespace BDD
* @api public
*/
function assertThrows (errorLike, errMsgMatcher, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, ssfi = flag(this, 'ssfi')
, flagMsg = flag(this, 'message')
, negate = flag(this, 'negate') || false;
new Assertion(obj, flagMsg, ssfi, true).is.a('function');
if (errorLike instanceof RegExp || typeof errorLike === 'string') {
errMsgMatcher = errorLike;
errorLike = null;
}
var caughtErr;
try {
obj();
} catch (err) {
caughtErr = err;
}
// If we have the negate flag enabled and at least one valid argument it means we do expect an error
// but we want it to match a given set of criteria
var everyArgIsUndefined = errorLike === undefined && errMsgMatcher === undefined;
// If we've got the negate flag enabled and both args, we should only fail if both aren't compatible
// See Issue #551 and PR #683@GitHub
var everyArgIsDefined = Boolean(errorLike && errMsgMatcher);
var errorLikeFail = false;
var errMsgMatcherFail = false;
// Checking if error was thrown
if (everyArgIsUndefined || !everyArgIsUndefined && !negate) {
// We need this to display results correctly according to their types
var errorLikeString = 'an error';
if (errorLike instanceof Error) {
errorLikeString = '#{exp}';
} else if (errorLike) {
errorLikeString = _.checkError.getConstructorName(errorLike);
}
this.assert(
caughtErr
, 'expected #{this} to throw ' + errorLikeString
, 'expected #{this} to not throw an error but #{act} was thrown'
, errorLike && errorLike.toString()
, (caughtErr instanceof Error ?
caughtErr.toString() : (typeof caughtErr === 'string' ? caughtErr : caughtErr &&
_.checkError.getConstructorName(caughtErr)))
);
}
if (errorLike && caughtErr) {
// We should compare instances only if `errorLike` is an instance of `Error`
if (errorLike instanceof Error) {
var isCompatibleInstance = _.checkError.compatibleInstance(caughtErr, errorLike);
if (isCompatibleInstance === negate) {
// These checks were created to ensure we won't fail too soon when we've got both args and a negate
// See Issue #551 and PR #683@GitHub
if (everyArgIsDefined && negate) {
errorLikeFail = true;
} else {
this.assert(
negate
, 'expected #{this} to throw #{exp} but #{act} was thrown'
, 'expected #{this} to not throw #{exp}' + (caughtErr && !negate ? ' but #{act} was thrown' : '')
, errorLike.toString()
, caughtErr.toString()
);
}
}
}
var isCompatibleConstructor = _.checkError.compatibleConstructor(caughtErr, errorLike);
if (isCompatibleConstructor === negate) {
if (everyArgIsDefined && negate) {
errorLikeFail = true;
} else {
this.assert(
negate
, 'expected #{this} to throw #{exp} but #{act} was thrown'
, 'expected #{this} to not throw #{exp}' + (caughtErr ? ' but #{act} was thrown' : '')
, (errorLike instanceof Error ? errorLike.toString() : errorLike && _.checkError.getConstructorName(errorLike))
, (caughtErr instanceof Error ? caughtErr.toString() : caughtErr && _.checkError.getConstructorName(caughtErr))
);
}
}
}
if (caughtErr && errMsgMatcher !== undefined && errMsgMatcher !== null) {
// Here we check compatible messages
var placeholder = 'including';
if (errMsgMatcher instanceof RegExp) {
placeholder = 'matching'
}
var isCompatibleMessage = _.checkError.compatibleMessage(caughtErr, errMsgMatcher);
if (isCompatibleMessage === negate) {
if (everyArgIsDefined && negate) {
errMsgMatcherFail = true;
} else {
this.assert(
negate
, 'expected #{this} to throw error ' + placeholder + ' #{exp} but got #{act}'
, 'expected #{this} to throw error not ' + placeholder + ' #{exp}'
, errMsgMatcher
, _.checkError.getMessage(caughtErr)
);
}
}
}
// If both assertions failed and both should've matched we throw an error
if (errorLikeFail && errMsgMatcherFail) {
this.assert(
negate
, 'expected #{this} to throw #{exp} but #{act} was thrown'
, 'expected #{this} to not throw #{exp}' + (caughtErr ? ' but #{act} was thrown' : '')
, (errorLike instanceof Error ? errorLike.toString() : errorLike && _.checkError.getConstructorName(errorLike))
, (caughtErr instanceof Error ? caughtErr.toString() : caughtErr && _.checkError.getConstructorName(caughtErr))
);
}
flag(this, 'object', caughtErr);
};
Assertion.addMethod('throw', assertThrows);
Assertion.addMethod('throws', assertThrows);
Assertion.addMethod('Throw', assertThrows);
/**
* ### .respondTo(method[, msg])
*
* When the target is a non-function object, `.respondTo` asserts that the
* target has a method with the given name `method`. The method can be own or
* inherited, and it can be enumerable or non-enumerable.
*
* function Cat () {}
* Cat.prototype.meow = function () {};
*
* expect(new Cat()).to.respondTo('meow');
*
* When the target is a function, `.respondTo` asserts that the target's
* `prototype` property has a method with the given name `method`. Again, the
* method can be own or inherited, and it can be enumerable or non-enumerable.
*
* function Cat () {}
* Cat.prototype.meow = function () {};
*
* expect(Cat).to.respondTo('meow');
*
* Add `.itself` earlier in the chain to force `.respondTo` to treat the
* target as a non-function object, even if it's a function. Thus, it asserts
* that the target has a method with the given name `method`, rather than
* asserting that the target's `prototype` property has a method with the
* given name `method`.
*
* function Cat () {}
* Cat.prototype.meow = function () {};
* Cat.hiss = function () {};
*
* expect(Cat).itself.to.respondTo('hiss').but.not.respondTo('meow');
*
* When not adding `.itself`, it's important to check the target's type before
* using `.respondTo`. See the `.a` doc for info on checking a target's type.
*
* function Cat () {}
* Cat.prototype.meow = function () {};
*
* expect(new Cat()).to.be.an('object').that.respondsTo('meow');
*
* Add `.not` earlier in the chain to negate `.respondTo`.
*
* function Dog () {}
* Dog.prototype.bark = function () {};
*
* expect(new Dog()).to.not.respondTo('meow');
*
* `.respondTo` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`.
*
* expect({}).to.respondTo('meow', 'nooo why fail??');
* expect({}, 'nooo why fail??').to.respondTo('meow');
*
* The alias `.respondsTo` can be used interchangeably with `.respondTo`.
*
* @name respondTo
* @alias respondsTo
* @param {String} method
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function respondTo (method, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, itself = flag(this, 'itself')
, context = ('function' === typeof obj && !itself)
? obj.prototype[method]
: obj[method];
this.assert(
'function' === typeof context
, 'expected #{this} to respond to ' + _.inspect(method)
, 'expected #{this} to not respond to ' + _.inspect(method)
);
}
Assertion.addMethod('respondTo', respondTo);
Assertion.addMethod('respondsTo', respondTo);
/**
* ### .itself
*
* Forces all `.respondTo` assertions that follow in the chain to behave as if
* the target is a non-function object, even if it's a function. Thus, it
* causes `.respondTo` to assert that the target has a method with the given
* name, rather than asserting that the target's `prototype` property has a
* method with the given name.
*
* function Cat () {}
* Cat.prototype.meow = function () {};
* Cat.hiss = function () {};
*
* expect(Cat).itself.to.respondTo('hiss').but.not.respondTo('meow');
*
* @name itself
* @namespace BDD
* @api public
*/
Assertion.addProperty('itself', function () {
flag(this, 'itself', true);
});
/**
* ### .satisfy(matcher[, msg])
*
* Invokes the given `matcher` function with the target being passed as the
* first argument, and asserts that the value returned is truthy.
*
* expect(1).to.satisfy(function(num) {
* return num > 0;
* });
*
* Add `.not` earlier in the chain to negate `.satisfy`.
*
* expect(1).to.not.satisfy(function(num) {
* return num > 2;
* });
*
* `.satisfy` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`.
*
* expect(1).to.satisfy(function(num) {
* return num > 2;
* }, 'nooo why fail??');
*
* expect(1, 'nooo why fail??').to.satisfy(function(num) {
* return num > 2;
* });
*
* The alias `.satisfies` can be used interchangeably with `.satisfy`.
*
* @name satisfy
* @alias satisfies
* @param {Function} matcher
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function satisfy (matcher, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object');
var result = matcher(obj);
this.assert(
result
, 'expected #{this} to satisfy ' + _.objDisplay(matcher)
, 'expected #{this} to not satisfy' + _.objDisplay(matcher)
, flag(this, 'negate') ? false : true
, result
);
}
Assertion.addMethod('satisfy', satisfy);
Assertion.addMethod('satisfies', satisfy);
/**
* ### .closeTo(expected, delta[, msg])
*
* Asserts that the target is a number that's within a given +/- `delta` range
* of the given number `expected`. However, it's often best to assert that the
* target is equal to its expected value.
*
* // Recommended
* expect(1.5).to.equal(1.5);
*
* // Not recommended
* expect(1.5).to.be.closeTo(1, 0.5);
* expect(1.5).to.be.closeTo(2, 0.5);
* expect(1.5).to.be.closeTo(1, 1);
*
* Add `.not` earlier in the chain to negate `.closeTo`.
*
* expect(1.5).to.equal(1.5); // Recommended
* expect(1.5).to.not.be.closeTo(3, 1); // Not recommended
*
* `.closeTo` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`.
*
* expect(1.5).to.be.closeTo(3, 1, 'nooo why fail??');
* expect(1.5, 'nooo why fail??').to.be.closeTo(3, 1);
*
* The alias `.approximately` can be used interchangeably with `.closeTo`.
*
* @name closeTo
* @alias approximately
* @param {Number} expected
* @param {Number} delta
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function closeTo(expected, delta, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, flagMsg = flag(this, 'message')
, ssfi = flag(this, 'ssfi');
new Assertion(obj, flagMsg, ssfi, true).is.a('number');
if (typeof expected !== 'number' || typeof delta !== 'number') {
flagMsg = flagMsg ? flagMsg + ': ' : '';
throw new AssertionError(
flagMsg + 'the arguments to closeTo or approximately must be numbers',
undefined,
ssfi
);
}
this.assert(
Math.abs(obj - expected) <= delta
, 'expected #{this} to be close to ' + expected + ' +/- ' + delta
, 'expected #{this} not to be close to ' + expected + ' +/- ' + delta
);
}
Assertion.addMethod('closeTo', closeTo);
Assertion.addMethod('approximately', closeTo);
// Note: Duplicates are ignored if testing for inclusion instead of sameness.
function isSubsetOf(subset, superset, cmp, contains, ordered) {
if (!contains) {
if (subset.length !== superset.length) return false;
superset = superset.slice();
}
return subset.every(function(elem, idx) {
if (ordered) return cmp ? cmp(elem, superset[idx]) : elem === superset[idx];
if (!cmp) {
var matchIdx = superset.indexOf(elem);
if (matchIdx === -1) return false;
// Remove match from superset so not counted twice if duplicate in subset.
if (!contains) superset.splice(matchIdx, 1);
return true;
}
return superset.some(function(elem2, matchIdx) {
if (!cmp(elem, elem2)) return false;
// Remove match from superset so not counted twice if duplicate in subset.
if (!contains) superset.splice(matchIdx, 1);
return true;
});
});
}
/**
* ### .members(set[, msg])
*
* Asserts that the target array has the same members as the given array
* `set`.
*
* expect([1, 2, 3]).to.have.members([2, 1, 3]);
* expect([1, 2, 2]).to.have.members([2, 1, 2]);
*
* By default, members are compared using strict (`===`) equality. Add `.deep`
* earlier in the chain to use deep equality instead. See the `deep-eql`
* project page for info on the deep equality algorithm:
* https://github.com/chaijs/deep-eql.
*
* // Target array deeply (but not strictly) has member `{a: 1}`
* expect([{a: 1}]).to.have.deep.members([{a: 1}]);
* expect([{a: 1}]).to.not.have.members([{a: 1}]);
*
* By default, order doesn't matter. Add `.ordered` earlier in the chain to
* require that members appear in the same order.
*
* expect([1, 2, 3]).to.have.ordered.members([1, 2, 3]);
* expect([1, 2, 3]).to.have.members([2, 1, 3])
* .but.not.ordered.members([2, 1, 3]);
*
* By default, both arrays must be the same size. Add `.include` earlier in
* the chain to require that the target's members be a superset of the
* expected members. Note that duplicates are ignored in the subset when
* `.include` is added.
*
* // Target array is a superset of [1, 2] but not identical
* expect([1, 2, 3]).to.include.members([1, 2]);
* expect([1, 2, 3]).to.not.have.members([1, 2]);
*
* // Duplicates in the subset are ignored
* expect([1, 2, 3]).to.include.members([1, 2, 2, 2]);
*
* `.deep`, `.ordered`, and `.include` can all be combined. However, if
* `.include` and `.ordered` are combined, the ordering begins at the start of
* both arrays.
*
* expect([{a: 1}, {b: 2}, {c: 3}])
* .to.include.deep.ordered.members([{a: 1}, {b: 2}])
* .but.not.include.deep.ordered.members([{b: 2}, {c: 3}]);
*
* Add `.not` earlier in the chain to negate `.members`. However, it's
* dangerous to do so. The problem is that it creates uncertain expectations
* by asserting that the target array doesn't have all of the same members as
* the given array `set` but may or may not have some of them. It's often best
* to identify the exact output that's expected, and then write an assertion
* that only accepts that exact output.
*
* expect([1, 2]).to.not.include(3).and.not.include(4); // Recommended
* expect([1, 2]).to.not.have.members([3, 4]); // Not recommended
*
* `.members` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`.
*
* expect([1, 2]).to.have.members([1, 2, 3], 'nooo why fail??');
* expect([1, 2], 'nooo why fail??').to.have.members([1, 2, 3]);
*
* @name members
* @param {Array} set
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
Assertion.addMethod('members', function (subset, msg) {
if (msg) flag(this, 'message', msg);
var obj = flag(this, 'object')
, flagMsg = flag(this, 'message')
, ssfi = flag(this, 'ssfi');
new Assertion(obj, flagMsg, ssfi, true).to.be.an('array');
new Assertion(subset, flagMsg, ssfi, true).to.be.an('array');
var contains = flag(this, 'contains');
var ordered = flag(this, 'ordered');
var subject, failMsg, failNegateMsg;
if (contains) {
subject = ordered ? 'an ordered superset' : 'a superset';
failMsg = 'expected #{this} to be ' + subject + ' of #{exp}';
failNegateMsg = 'expected #{this} to not be ' + subject + ' of #{exp}';
} else {
subject = ordered ? 'ordered members' : 'members';
failMsg = 'expected #{this} to have the same ' + subject + ' as #{exp}';
failNegateMsg = 'expected #{this} to not have the same ' + subject + ' as #{exp}';
}
var cmp = flag(this, 'deep') ? _.eql : undefined;
this.assert(
isSubsetOf(subset, obj, cmp, contains, ordered)
, failMsg
, failNegateMsg
, subset
, obj
, true
);
});
/**
* ### .oneOf(list[, msg])
*
* Asserts that the target is a member of the given array `list`. However,
* it's often best to assert that the target is equal to its expected value.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.be.oneOf([1, 2, 3]); // Not recommended
*
* Comparisons are performed using strict (`===`) equality.
*
* Add `.not` earlier in the chain to negate `.oneOf`.
*
* expect(1).to.equal(1); // Recommended
* expect(1).to.not.be.oneOf([2, 3, 4]); // Not recommended
*
* `.oneOf` accepts an optional `msg` argument which is a custom error message
* to show when the assertion fails. The message can also be given as the
* second argument to `expect`.
*
* expect(1).to.be.oneOf([2, 3, 4], 'nooo why fail??');
* expect(1, 'nooo why fail??').to.be.oneOf([2, 3, 4]);
*
* @name oneOf
* @param {Array<*>} list
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function oneOf (list, msg) {
if (msg) flag(this, 'message', msg);
var expected = flag(this, 'object')
, flagMsg = flag(this, 'message')
, ssfi = flag(this, 'ssfi');
new Assertion(list, flagMsg, ssfi, true).to.be.an('array');
this.assert(
list.indexOf(expected) > -1
, 'expected #{this} to be one of #{exp}'
, 'expected #{this} to not be one of #{exp}'
, list
, expected
);
}
Assertion.addMethod('oneOf', oneOf);
/**
* ### .change(subject[, prop[, msg]])
*
* When one argument is provided, `.change` asserts that the given function
* `subject` returns a different value when it's invoked before the target
* function compared to when it's invoked afterward. However, it's often best
* to assert that `subject` is equal to its expected value.
*
* var dots = ''
* , addDot = function () { dots += '.'; }
* , getDots = function () { return dots; };
*
* // Recommended
* expect(getDots()).to.equal('');
* addDot();
* expect(getDots()).to.equal('.');
*
* // Not recommended
* expect(addDot).to.change(getDots);
*
* When two arguments are provided, `.change` asserts that the value of the
* given object `subject`'s `prop` property is different before invoking the
* target function compared to afterward.
*
* var myObj = {dots: ''}
* , addDot = function () { myObj.dots += '.'; };
*
* // Recommended
* expect(myObj).to.have.property('dots', '');
* addDot();
* expect(myObj).to.have.property('dots', '.');
*
* // Not recommended
* expect(addDot).to.change(myObj, 'dots');
*
* Strict (`===`) equality is used to compare before and after values.
*
* Add `.not` earlier in the chain to negate `.change`.
*
* var dots = ''
* , noop = function () {}
* , getDots = function () { return dots; };
*
* expect(noop).to.not.change(getDots);
*
* var myObj = {dots: ''}
* , noop = function () {};
*
* expect(noop).to.not.change(myObj, 'dots');
*
* `.change` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`. When not providing two arguments, always
* use the second form.
*
* var myObj = {dots: ''}
* , addDot = function () { myObj.dots += '.'; };
*
* expect(addDot).to.not.change(myObj, 'dots', 'nooo why fail??');
*
* var dots = ''
* , addDot = function () { dots += '.'; }
* , getDots = function () { return dots; };
*
* expect(addDot, 'nooo why fail??').to.not.change(getDots);
*
* `.change` also causes all `.by` assertions that follow in the chain to
* assert how much a numeric subject was increased or decreased by. However,
* it's dangerous to use `.change.by`. The problem is that it creates
* uncertain expectations by asserting that the subject either increases by
* the given delta, or that it decreases by the given delta. It's often best
* to identify the exact output that's expected, and then write an assertion
* that only accepts that exact output.
*
* var myObj = {val: 1}
* , addTwo = function () { myObj.val += 2; }
* , subtractTwo = function () { myObj.val -= 2; };
*
* expect(addTwo).to.increase(myObj, 'val').by(2); // Recommended
* expect(addTwo).to.change(myObj, 'val').by(2); // Not recommended
*
* expect(subtractTwo).to.decrease(myObj, 'val').by(2); // Recommended
* expect(subtractTwo).to.change(myObj, 'val').by(2); // Not recommended
*
* The alias `.changes` can be used interchangeably with `.change`.
*
* @name change
* @alias changes
* @param {String} subject
* @param {String} prop name _optional_
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertChanges (subject, prop, msg) {
if (msg) flag(this, 'message', msg);
var fn = flag(this, 'object')
, flagMsg = flag(this, 'message')
, ssfi = flag(this, 'ssfi');
new Assertion(fn, flagMsg, ssfi, true).is.a('function');
var initial;
if (!prop) {
new Assertion(subject, flagMsg, ssfi, true).is.a('function');
initial = subject();
} else {
new Assertion(subject, flagMsg, ssfi, true).to.have.property(prop);
initial = subject[prop];
}
fn();
var final = prop === undefined || prop === null ? subject() : subject[prop];
var msgObj = prop === undefined || prop === null ? initial : '.' + prop;
// This gets flagged because of the .by(delta) assertion
flag(this, 'deltaMsgObj', msgObj);
flag(this, 'initialDeltaValue', initial);
flag(this, 'finalDeltaValue', final);
flag(this, 'deltaBehavior', 'change');
flag(this, 'realDelta', final !== initial);
this.assert(
initial !== final
, 'expected ' + msgObj + ' to change'
, 'expected ' + msgObj + ' to not change'
);
}
Assertion.addMethod('change', assertChanges);
Assertion.addMethod('changes', assertChanges);
/**
* ### .increase(subject[, prop[, msg]])
*
* When one argument is provided, `.increase` asserts that the given function
* `subject` returns a greater number when it's invoked after invoking the
* target function compared to when it's invoked beforehand. `.increase` also
* causes all `.by` assertions that follow in the chain to assert how much
* greater of a number is returned. It's often best to assert that the return
* value increased by the expected amount, rather than asserting it increased
* by any amount.
*
* var val = 1
* , addTwo = function () { val += 2; }
* , getVal = function () { return val; };
*
* expect(addTwo).to.increase(getVal).by(2); // Recommended
* expect(addTwo).to.increase(getVal); // Not recommended
*
* When two arguments are provided, `.increase` asserts that the value of the
* given object `subject`'s `prop` property is greater after invoking the
* target function compared to beforehand.
*
* var myObj = {val: 1}
* , addTwo = function () { myObj.val += 2; };
*
* expect(addTwo).to.increase(myObj, 'val').by(2); // Recommended
* expect(addTwo).to.increase(myObj, 'val'); // Not recommended
*
* Add `.not` earlier in the chain to negate `.increase`. However, it's
* dangerous to do so. The problem is that it creates uncertain expectations
* by asserting that the subject either decreases, or that it stays the same.
* It's often best to identify the exact output that's expected, and then
* write an assertion that only accepts that exact output.
*
* When the subject is expected to decrease, it's often best to assert that it
* decreased by the expected amount.
*
* var myObj = {val: 1}
* , subtractTwo = function () { myObj.val -= 2; };
*
* expect(subtractTwo).to.decrease(myObj, 'val').by(2); // Recommended
* expect(subtractTwo).to.not.increase(myObj, 'val'); // Not recommended
*
* When the subject is expected to stay the same, it's often best to assert
* exactly that.
*
* var myObj = {val: 1}
* , noop = function () {};
*
* expect(noop).to.not.change(myObj, 'val'); // Recommended
* expect(noop).to.not.increase(myObj, 'val'); // Not recommended
*
* `.increase` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`. When not providing two arguments, always
* use the second form.
*
* var myObj = {val: 1}
* , noop = function () {};
*
* expect(noop).to.increase(myObj, 'val', 'nooo why fail??');
*
* var val = 1
* , noop = function () {}
* , getVal = function () { return val; };
*
* expect(noop, 'nooo why fail??').to.increase(getVal);
*
* The alias `.increases` can be used interchangeably with `.increase`.
*
* @name increase
* @alias increases
* @param {String|Function} subject
* @param {String} prop name _optional_
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertIncreases (subject, prop, msg) {
if (msg) flag(this, 'message', msg);
var fn = flag(this, 'object')
, flagMsg = flag(this, 'message')
, ssfi = flag(this, 'ssfi');
new Assertion(fn, flagMsg, ssfi, true).is.a('function');
var initial;
if (!prop) {
new Assertion(subject, flagMsg, ssfi, true).is.a('function');
initial = subject();
} else {
new Assertion(subject, flagMsg, ssfi, true).to.have.property(prop);
initial = subject[prop];
}
// Make sure that the target is a number
new Assertion(initial, flagMsg, ssfi, true).is.a('number');
fn();
var final = prop === undefined || prop === null ? subject() : subject[prop];
var msgObj = prop === undefined || prop === null ? initial : '.' + prop;
flag(this, 'deltaMsgObj', msgObj);
flag(this, 'initialDeltaValue', initial);
flag(this, 'finalDeltaValue', final);
flag(this, 'deltaBehavior', 'increase');
flag(this, 'realDelta', final - initial);
this.assert(
final - initial > 0
, 'expected ' + msgObj + ' to increase'
, 'expected ' + msgObj + ' to not increase'
);
}
Assertion.addMethod('increase', assertIncreases);
Assertion.addMethod('increases', assertIncreases);
/**
* ### .decrease(subject[, prop[, msg]])
*
* When one argument is provided, `.decrease` asserts that the given function
* `subject` returns a lesser number when it's invoked after invoking the
* target function compared to when it's invoked beforehand. `.decrease` also
* causes all `.by` assertions that follow in the chain to assert how much
* lesser of a number is returned. It's often best to assert that the return
* value decreased by the expected amount, rather than asserting it decreased
* by any amount.
*
* var val = 1
* , subtractTwo = function () { val -= 2; }
* , getVal = function () { return val; };
*
* expect(subtractTwo).to.decrease(getVal).by(2); // Recommended
* expect(subtractTwo).to.decrease(getVal); // Not recommended
*
* When two arguments are provided, `.decrease` asserts that the value of the
* given object `subject`'s `prop` property is lesser after invoking the
* target function compared to beforehand.
*
* var myObj = {val: 1}
* , subtractTwo = function () { myObj.val -= 2; };
*
* expect(subtractTwo).to.decrease(myObj, 'val').by(2); // Recommended
* expect(subtractTwo).to.decrease(myObj, 'val'); // Not recommended
*
* Add `.not` earlier in the chain to negate `.decrease`. However, it's
* dangerous to do so. The problem is that it creates uncertain expectations
* by asserting that the subject either increases, or that it stays the same.
* It's often best to identify the exact output that's expected, and then
* write an assertion that only accepts that exact output.
*
* When the subject is expected to increase, it's often best to assert that it
* increased by the expected amount.
*
* var myObj = {val: 1}
* , addTwo = function () { myObj.val += 2; };
*
* expect(addTwo).to.increase(myObj, 'val').by(2); // Recommended
* expect(addTwo).to.not.decrease(myObj, 'val'); // Not recommended
*
* When the subject is expected to stay the same, it's often best to assert
* exactly that.
*
* var myObj = {val: 1}
* , noop = function () {};
*
* expect(noop).to.not.change(myObj, 'val'); // Recommended
* expect(noop).to.not.decrease(myObj, 'val'); // Not recommended
*
* `.decrease` accepts an optional `msg` argument which is a custom error
* message to show when the assertion fails. The message can also be given as
* the second argument to `expect`. When not providing two arguments, always
* use the second form.
*
* var myObj = {val: 1}
* , noop = function () {};
*
* expect(noop).to.decrease(myObj, 'val', 'nooo why fail??');
*
* var val = 1
* , noop = function () {}
* , getVal = function () { return val; };
*
* expect(noop, 'nooo why fail??').to.decrease(getVal);
*
* The alias `.decreases` can be used interchangeably with `.decrease`.
*
* @name decrease
* @alias decreases
* @param {String|Function} subject
* @param {String} prop name _optional_
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertDecreases (subject, prop, msg) {
if (msg) flag(this, 'message', msg);
var fn = flag(this, 'object')
, flagMsg = flag(this, 'message')
, ssfi = flag(this, 'ssfi');
new Assertion(fn, flagMsg, ssfi, true).is.a('function');
var initial;
if (!prop) {
new Assertion(subject, flagMsg, ssfi, true).is.a('function');
initial = subject();
} else {
new Assertion(subject, flagMsg, ssfi, true).to.have.property(prop);
initial = subject[prop];
}
// Make sure that the target is a number
new Assertion(initial, flagMsg, ssfi, true).is.a('number');
fn();
var final = prop === undefined || prop === null ? subject() : subject[prop];
var msgObj = prop === undefined || prop === null ? initial : '.' + prop;
flag(this, 'deltaMsgObj', msgObj);
flag(this, 'initialDeltaValue', initial);
flag(this, 'finalDeltaValue', final);
flag(this, 'deltaBehavior', 'decrease');
flag(this, 'realDelta', initial - final);
this.assert(
final - initial < 0
, 'expected ' + msgObj + ' to decrease'
, 'expected ' + msgObj + ' to not decrease'
);
}
Assertion.addMethod('decrease', assertDecreases);
Assertion.addMethod('decreases', assertDecreases);
/**
* ### .by(delta[, msg])
*
* When following an `.increase` assertion in the chain, `.by` asserts that
* the subject of the `.increase` assertion increased by the given `delta`.
*
* var myObj = {val: 1}
* , addTwo = function () { myObj.val += 2; };
*
* expect(addTwo).to.increase(myObj, 'val').by(2);
*
* When following a `.decrease` assertion in the chain, `.by` asserts that the
* subject of the `.decrease` assertion decreased by the given `delta`.
*
* var myObj = {val: 1}
* , subtractTwo = function () { myObj.val -= 2; };
*
* expect(subtractTwo).to.decrease(myObj, 'val').by(2);
*
* When following a `.change` assertion in the chain, `.by` asserts that the
* subject of the `.change` assertion either increased or decreased by the
* given `delta`. However, it's dangerous to use `.change.by`. The problem is
* that it creates uncertain expectations. It's often best to identify the
* exact output that's expected, and then write an assertion that only accepts
* that exact output.
*
* var myObj = {val: 1}
* , addTwo = function () { myObj.val += 2; }
* , subtractTwo = function () { myObj.val -= 2; };
*
* expect(addTwo).to.increase(myObj, 'val').by(2); // Recommended
* expect(addTwo).to.change(myObj, 'val').by(2); // Not recommended
*
* expect(subtractTwo).to.decrease(myObj, 'val').by(2); // Recommended
* expect(subtractTwo).to.change(myObj, 'val').by(2); // Not recommended
*
* Add `.not` earlier in the chain to negate `.by`. However, it's often best
* to assert that the subject changed by its expected delta, rather than
* asserting that it didn't change by one of countless unexpected deltas.
*
* var myObj = {val: 1}
* , addTwo = function () { myObj.val += 2; };
*
* // Recommended
* expect(addTwo).to.increase(myObj, 'val').by(2);
*
* // Not recommended
* expect(addTwo).to.increase(myObj, 'val').but.not.by(3);
*
* `.by` accepts an optional `msg` argument which is a custom error message to
* show when the assertion fails. The message can also be given as the second
* argument to `expect`.
*
* var myObj = {val: 1}
* , addTwo = function () { myObj.val += 2; };
*
* expect(addTwo).to.increase(myObj, 'val').by(3, 'nooo why fail??');
* expect(addTwo, 'nooo why fail??').to.increase(myObj, 'val').by(3);
*
* @name by
* @param {Number} delta
* @param {String} msg _optional_
* @namespace BDD
* @api public
*/
function assertDelta(delta, msg) {
if (msg) flag(this, 'message', msg);
var msgObj = flag(this, 'deltaMsgObj');
var initial = flag(this, 'initialDeltaValue');
var final = flag(this, 'finalDeltaValue');
var behavior = flag(this, 'deltaBehavior');
var realDelta = flag(this, 'realDelta');
var expression;
if (behavior === 'change') {
expression = Math.abs(final - initial) === Math.abs(delta);
} else {
expression = realDelta === Math.abs(delta);
}
this.assert(
expression
, 'expected ' + msgObj + ' to ' + behavior + ' by ' + delta
, 'expected ' + msgObj + ' to not ' + behavior + ' by ' + delta
);
}
Assertion.addMethod('by', assertDelta);
/**
* ### .extensible
*
* Asserts that the target is extensible, which means that new properties can
* be added to it. Primitives are never extensible.
*
* expect({a: 1}).to.be.extensible;
*
* Add `.not` earlier in the chain to negate `.extensible`.
*
* var nonExtensibleObject = Object.preventExtensions({})
* , sealedObject = Object.seal({})
* , frozenObject = Object.freeze({});
*
* expect(nonExtensibleObject).to.not.be.extensible;
* expect(sealedObject).to.not.be.extensible;
* expect(frozenObject).to.not.be.extensible;
* expect(1).to.not.be.extensible;
*
* A custom error message can be given as the second argument to `expect`.
*
* expect(1, 'nooo why fail??').to.be.extensible;
*
* @name extensible
* @namespace BDD
* @api public
*/
Assertion.addProperty('extensible', function() {
var obj = flag(this, 'object');
// In ES5, if the argument to this method is a primitive, then it will cause a TypeError.
// In ES6, a non-object argument will be treated as if it was a non-extensible ordinary object, simply return false.
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isExtensible
// The following provides ES6 behavior for ES5 environments.
var isExtensible = obj === Object(obj) && Object.isExtensible(obj);
this.assert(
isExtensible
, 'expected #{this} to be extensible'
, 'expected #{this} to not be extensible'
);
});
/**
* ### .sealed
*
* Asserts that the target is sealed, which means that new properties can't be
* added to it, and its existing properties can't be reconfigured or deleted.
* However, it's possible that its existing properties can still be reassigned
* to different values. Primitives are always sealed.
*
* var sealedObject = Object.seal({});
* var frozenObject = Object.freeze({});
*
* expect(sealedObject).to.be.sealed;
* expect(frozenObject).to.be.sealed;
* expect(1).to.be.sealed;
*
* Add `.not` earlier in the chain to negate `.sealed`.
*
* expect({a: 1}).to.not.be.sealed;
*
* A custom error message can be given as the second argument to `expect`.
*
* expect({a: 1}, 'nooo why fail??').to.be.sealed;
*
* @name sealed
* @namespace BDD
* @api public
*/
Assertion.addProperty('sealed', function() {
var obj = flag(this, 'object');
// In ES5, if the argument to this method is a primitive, then it will cause a TypeError.
// In ES6, a non-object argument will be treated as if it was a sealed ordinary object, simply return true.
// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isSealed
// The following provides ES6 behavior for ES5 environments.
var isSealed = obj === Object(obj) ? Object.isSealed(obj) : true;
this.assert(
isSealed
, 'expected #{this} to be sealed'
, 'expected #{this} to not be sealed'
);
});
/**
* ### .frozen
*
* Asserts that the target is frozen, which means that new properties can't be
* added to it, and its existing properties can't be reassigned to different
* values, reconfigured, or deleted. Primitives are always frozen.
*
* var frozenObject = Object.freeze({});
*
* expect(frozenObject).to.be.frozen;
* expect(1).to.be.frozen;
*
* Add `.not` earlier in the chain to negate `.frozen`.
*
* expect({a: 1}).to.not.be.frozen;
*
* A custom error message can be given as the second argument to `expect`.
*
* expect({a: 1}, 'nooo why fail??').to.be.frozen;
*
* @name frozen
* @namespace BDD
* @api public
*/
Assertion.addProperty('frozen', function() {
var obj = flag(this, 'object');
// In ES5, if the argument to this method is a primitive, then it will cause a TypeError.
// In ES6, a non-object argument will be treated as if it was a frozen ordinary object, simply return true.
// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isFrozen
// The following provides ES6 behavior for ES5 environments.
var isFrozen = obj === Object(obj) ? Object.isFrozen(obj) : true;
this.assert(
isFrozen
, 'expected #{this} to be frozen'
, 'expected #{this} to not be frozen'
);
});
/**
* ### .finite
*
* Asserts that the target is a number, and isn't `NaN` or positive/negative
* `Infinity`.
*
* expect(1).to.be.finite;
*
* Add `.not` earlier in the chain to negate `.finite`. However, it's
* dangerous to do so. The problem is that it creates uncertain expectations
* by asserting that the subject either isn't a number, or that it's `NaN`, or
* that it's positive `Infinity`, or that it's negative `Infinity`. It's often
* best to identify the exact output that's expected, and then write an
* assertion that only accepts that exact output.
*
* When the target isn't expected to be a number, it's often best to assert
* that it's the expected type, rather than asserting that it isn't one of
* many unexpected types.
*
* expect('foo').to.be.a('string'); // Recommended
* expect('foo').to.not.be.finite; // Not recommended
*
* When the target is expected to be `NaN`, it's often best to assert exactly
* that.
*
* expect(NaN).to.be.NaN; // Recommended
* expect(NaN).to.not.be.finite; // Not recommended
*
* When the target is expected to be positive infinity, it's often best to
* assert exactly that.
*
* expect(Infinity).to.equal(Infinity); // Recommended
* expect(Infinity).to.not.be.finite; // Not recommended
*
* When the target is expected to be negative infinity, it's often best to
* assert exactly that.
*
* expect(-Infinity).to.equal(-Infinity); // Recommended
* expect(-Infinity).to.not.be.finite; // Not recommended
*
* A custom error message can be given as the second argument to `expect`.
*
* expect('foo', 'nooo why fail??').to.be.finite;
*
* @name finite
* @namespace BDD
* @api public
*/
Assertion.addProperty('finite', function(msg) {
var obj = flag(this, 'object');
this.assert(
typeof obj === 'number' && isFinite(obj)
, 'expected #{this} to be a finite number'
, 'expected #{this} to not be a finite number'
);
});
};
},{}],6:[function(require,module,exports){
/*!
* chai
* Copyright(c) 2011-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
module.exports = function (chai, util) {
/*!
* Chai dependencies.
*/
var Assertion = chai.Assertion
, flag = util.flag;
/*!
* Module export.
*/
/**
* ### assert(expression, message)
*
* Write your own test expressions.
*
* assert('foo' !== 'bar', 'foo is not bar');
* assert(Array.isArray([]), 'empty arrays are arrays');
*
* @param {Mixed} expression to test for truthiness
* @param {String} message to display on error
* @name assert
* @namespace Assert
* @api public
*/
var assert = chai.assert = function (express, errmsg) {
var test = new Assertion(null, null, chai.assert, true);
test.assert(
express
, errmsg
, '[ negation message unavailable ]'
);
};
/**
* ### .fail([message])
* ### .fail(actual, expected, [message], [operator])
*
* Throw a failure. Node.js `assert` module-compatible.
*
* assert.fail();
* assert.fail("custom error message");
* assert.fail(1, 2);
* assert.fail(1, 2, "custom error message");
* assert.fail(1, 2, "custom error message", ">");
* assert.fail(1, 2, undefined, ">");
*
* @name fail
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @param {String} operator
* @namespace Assert
* @api public
*/
assert.fail = function (actual, expected, message, operator) {
if (arguments.length < 2) {
// Comply with Node's fail([message]) interface
message = actual;
actual = undefined;
}
message = message || 'assert.fail()';
throw new chai.AssertionError(message, {
actual: actual
, expected: expected
, operator: operator
}, assert.fail);
};
/**
* ### .isOk(object, [message])
*
* Asserts that `object` is truthy.
*
* assert.isOk('everything', 'everything is ok');
* assert.isOk(false, 'this will fail');
*
* @name isOk
* @alias ok
* @param {Mixed} object to test
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isOk = function (val, msg) {
new Assertion(val, msg, assert.isOk, true).is.ok;
};
/**
* ### .isNotOk(object, [message])
*
* Asserts that `object` is falsy.
*
* assert.isNotOk('everything', 'this will fail');
* assert.isNotOk(false, 'this will pass');
*
* @name isNotOk
* @alias notOk
* @param {Mixed} object to test
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotOk = function (val, msg) {
new Assertion(val, msg, assert.isNotOk, true).is.not.ok;
};
/**
* ### .equal(actual, expected, [message])
*
* Asserts non-strict equality (`==`) of `actual` and `expected`.
*
* assert.equal(3, '3', '== coerces values to strings');
*
* @name equal
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @namespace Assert
* @api public
*/
assert.equal = function (act, exp, msg) {
var test = new Assertion(act, msg, assert.equal, true);
test.assert(
exp == flag(test, 'object')
, 'expected #{this} to equal #{exp}'
, 'expected #{this} to not equal #{act}'
, exp
, act
, true
);
};
/**
* ### .notEqual(actual, expected, [message])
*
* Asserts non-strict inequality (`!=`) of `actual` and `expected`.
*
* assert.notEqual(3, 4, 'these numbers are not equal');
*
* @name notEqual
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notEqual = function (act, exp, msg) {
var test = new Assertion(act, msg, assert.notEqual, true);
test.assert(
exp != flag(test, 'object')
, 'expected #{this} to not equal #{exp}'
, 'expected #{this} to equal #{act}'
, exp
, act
, true
);
};
/**
* ### .strictEqual(actual, expected, [message])
*
* Asserts strict equality (`===`) of `actual` and `expected`.
*
* assert.strictEqual(true, true, 'these booleans are strictly equal');
*
* @name strictEqual
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @namespace Assert
* @api public
*/
assert.strictEqual = function (act, exp, msg) {
new Assertion(act, msg, assert.strictEqual, true).to.equal(exp);
};
/**
* ### .notStrictEqual(actual, expected, [message])
*
* Asserts strict inequality (`!==`) of `actual` and `expected`.
*
* assert.notStrictEqual(3, '3', 'no coercion for strict equality');
*
* @name notStrictEqual
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notStrictEqual = function (act, exp, msg) {
new Assertion(act, msg, assert.notStrictEqual, true).to.not.equal(exp);
};
/**
* ### .deepEqual(actual, expected, [message])
*
* Asserts that `actual` is deeply equal to `expected`.
*
* assert.deepEqual({ tea: 'green' }, { tea: 'green' });
*
* @name deepEqual
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @alias deepStrictEqual
* @namespace Assert
* @api public
*/
assert.deepEqual = assert.deepStrictEqual = function (act, exp, msg) {
new Assertion(act, msg, assert.deepEqual, true).to.eql(exp);
};
/**
* ### .notDeepEqual(actual, expected, [message])
*
* Assert that `actual` is not deeply equal to `expected`.
*
* assert.notDeepEqual({ tea: 'green' }, { tea: 'jasmine' });
*
* @name notDeepEqual
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notDeepEqual = function (act, exp, msg) {
new Assertion(act, msg, assert.notDeepEqual, true).to.not.eql(exp);
};
/**
* ### .isAbove(valueToCheck, valueToBeAbove, [message])
*
* Asserts `valueToCheck` is strictly greater than (>) `valueToBeAbove`.
*
* assert.isAbove(5, 2, '5 is strictly greater than 2');
*
* @name isAbove
* @param {Mixed} valueToCheck
* @param {Mixed} valueToBeAbove
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isAbove = function (val, abv, msg) {
new Assertion(val, msg, assert.isAbove, true).to.be.above(abv);
};
/**
* ### .isAtLeast(valueToCheck, valueToBeAtLeast, [message])
*
* Asserts `valueToCheck` is greater than or equal to (>=) `valueToBeAtLeast`.
*
* assert.isAtLeast(5, 2, '5 is greater or equal to 2');
* assert.isAtLeast(3, 3, '3 is greater or equal to 3');
*
* @name isAtLeast
* @param {Mixed} valueToCheck
* @param {Mixed} valueToBeAtLeast
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isAtLeast = function (val, atlst, msg) {
new Assertion(val, msg, assert.isAtLeast, true).to.be.least(atlst);
};
/**
* ### .isBelow(valueToCheck, valueToBeBelow, [message])
*
* Asserts `valueToCheck` is strictly less than (<) `valueToBeBelow`.
*
* assert.isBelow(3, 6, '3 is strictly less than 6');
*
* @name isBelow
* @param {Mixed} valueToCheck
* @param {Mixed} valueToBeBelow
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isBelow = function (val, blw, msg) {
new Assertion(val, msg, assert.isBelow, true).to.be.below(blw);
};
/**
* ### .isAtMost(valueToCheck, valueToBeAtMost, [message])
*
* Asserts `valueToCheck` is less than or equal to (<=) `valueToBeAtMost`.
*
* assert.isAtMost(3, 6, '3 is less than or equal to 6');
* assert.isAtMost(4, 4, '4 is less than or equal to 4');
*
* @name isAtMost
* @param {Mixed} valueToCheck
* @param {Mixed} valueToBeAtMost
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isAtMost = function (val, atmst, msg) {
new Assertion(val, msg, assert.isAtMost, true).to.be.most(atmst);
};
/**
* ### .isTrue(value, [message])
*
* Asserts that `value` is true.
*
* var teaServed = true;
* assert.isTrue(teaServed, 'the tea has been served');
*
* @name isTrue
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isTrue = function (val, msg) {
new Assertion(val, msg, assert.isTrue, true).is['true'];
};
/**
* ### .isNotTrue(value, [message])
*
* Asserts that `value` is not true.
*
* var tea = 'tasty chai';
* assert.isNotTrue(tea, 'great, time for tea!');
*
* @name isNotTrue
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotTrue = function (val, msg) {
new Assertion(val, msg, assert.isNotTrue, true).to.not.equal(true);
};
/**
* ### .isFalse(value, [message])
*
* Asserts that `value` is false.
*
* var teaServed = false;
* assert.isFalse(teaServed, 'no tea yet? hmm...');
*
* @name isFalse
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isFalse = function (val, msg) {
new Assertion(val, msg, assert.isFalse, true).is['false'];
};
/**
* ### .isNotFalse(value, [message])
*
* Asserts that `value` is not false.
*
* var tea = 'tasty chai';
* assert.isNotFalse(tea, 'great, time for tea!');
*
* @name isNotFalse
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotFalse = function (val, msg) {
new Assertion(val, msg, assert.isNotFalse, true).to.not.equal(false);
};
/**
* ### .isNull(value, [message])
*
* Asserts that `value` is null.
*
* assert.isNull(err, 'there was no error');
*
* @name isNull
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNull = function (val, msg) {
new Assertion(val, msg, assert.isNull, true).to.equal(null);
};
/**
* ### .isNotNull(value, [message])
*
* Asserts that `value` is not null.
*
* var tea = 'tasty chai';
* assert.isNotNull(tea, 'great, time for tea!');
*
* @name isNotNull
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotNull = function (val, msg) {
new Assertion(val, msg, assert.isNotNull, true).to.not.equal(null);
};
/**
* ### .isNaN
*
* Asserts that value is NaN.
*
* assert.isNaN(NaN, 'NaN is NaN');
*
* @name isNaN
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNaN = function (val, msg) {
new Assertion(val, msg, assert.isNaN, true).to.be.NaN;
};
/**
* ### .isNotNaN
*
* Asserts that value is not NaN.
*
* assert.isNotNaN(4, '4 is not NaN');
*
* @name isNotNaN
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotNaN = function (val, msg) {
new Assertion(val, msg, assert.isNotNaN, true).not.to.be.NaN;
};
/**
* ### .exists
*
* Asserts that the target is neither `null` nor `undefined`.
*
* var foo = 'hi';
*
* assert.exists(foo, 'foo is neither `null` nor `undefined`');
*
* @name exists
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.exists = function (val, msg) {
new Assertion(val, msg, assert.exists, true).to.exist;
};
/**
* ### .notExists
*
* Asserts that the target is either `null` or `undefined`.
*
* var bar = null
* , baz;
*
* assert.notExists(bar);
* assert.notExists(baz, 'baz is either null or undefined');
*
* @name notExists
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notExists = function (val, msg) {
new Assertion(val, msg, assert.notExists, true).to.not.exist;
};
/**
* ### .isUndefined(value, [message])
*
* Asserts that `value` is `undefined`.
*
* var tea;
* assert.isUndefined(tea, 'no tea defined');
*
* @name isUndefined
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isUndefined = function (val, msg) {
new Assertion(val, msg, assert.isUndefined, true).to.equal(undefined);
};
/**
* ### .isDefined(value, [message])
*
* Asserts that `value` is not `undefined`.
*
* var tea = 'cup of chai';
* assert.isDefined(tea, 'tea has been defined');
*
* @name isDefined
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isDefined = function (val, msg) {
new Assertion(val, msg, assert.isDefined, true).to.not.equal(undefined);
};
/**
* ### .isFunction(value, [message])
*
* Asserts that `value` is a function.
*
* function serveTea() { return 'cup of tea'; };
* assert.isFunction(serveTea, 'great, we can have tea now');
*
* @name isFunction
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isFunction = function (val, msg) {
new Assertion(val, msg, assert.isFunction, true).to.be.a('function');
};
/**
* ### .isNotFunction(value, [message])
*
* Asserts that `value` is _not_ a function.
*
* var serveTea = [ 'heat', 'pour', 'sip' ];
* assert.isNotFunction(serveTea, 'great, we have listed the steps');
*
* @name isNotFunction
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotFunction = function (val, msg) {
new Assertion(val, msg, assert.isNotFunction, true).to.not.be.a('function');
};
/**
* ### .isObject(value, [message])
*
* Asserts that `value` is an object of type 'Object' (as revealed by `Object.prototype.toString`).
* _The assertion does not match subclassed objects._
*
* var selection = { name: 'Chai', serve: 'with spices' };
* assert.isObject(selection, 'tea selection is an object');
*
* @name isObject
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isObject = function (val, msg) {
new Assertion(val, msg, assert.isObject, true).to.be.a('object');
};
/**
* ### .isNotObject(value, [message])
*
* Asserts that `value` is _not_ an object of type 'Object' (as revealed by `Object.prototype.toString`).
*
* var selection = 'chai'
* assert.isNotObject(selection, 'tea selection is not an object');
* assert.isNotObject(null, 'null is not an object');
*
* @name isNotObject
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotObject = function (val, msg) {
new Assertion(val, msg, assert.isNotObject, true).to.not.be.a('object');
};
/**
* ### .isArray(value, [message])
*
* Asserts that `value` is an array.
*
* var menu = [ 'green', 'chai', 'oolong' ];
* assert.isArray(menu, 'what kind of tea do we want?');
*
* @name isArray
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isArray = function (val, msg) {
new Assertion(val, msg, assert.isArray, true).to.be.an('array');
};
/**
* ### .isNotArray(value, [message])
*
* Asserts that `value` is _not_ an array.
*
* var menu = 'green|chai|oolong';
* assert.isNotArray(menu, 'what kind of tea do we want?');
*
* @name isNotArray
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotArray = function (val, msg) {
new Assertion(val, msg, assert.isNotArray, true).to.not.be.an('array');
};
/**
* ### .isString(value, [message])
*
* Asserts that `value` is a string.
*
* var teaOrder = 'chai';
* assert.isString(teaOrder, 'order placed');
*
* @name isString
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isString = function (val, msg) {
new Assertion(val, msg, assert.isString, true).to.be.a('string');
};
/**
* ### .isNotString(value, [message])
*
* Asserts that `value` is _not_ a string.
*
* var teaOrder = 4;
* assert.isNotString(teaOrder, 'order placed');
*
* @name isNotString
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotString = function (val, msg) {
new Assertion(val, msg, assert.isNotString, true).to.not.be.a('string');
};
/**
* ### .isNumber(value, [message])
*
* Asserts that `value` is a number.
*
* var cups = 2;
* assert.isNumber(cups, 'how many cups');
*
* @name isNumber
* @param {Number} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNumber = function (val, msg) {
new Assertion(val, msg, assert.isNumber, true).to.be.a('number');
};
/**
* ### .isNotNumber(value, [message])
*
* Asserts that `value` is _not_ a number.
*
* var cups = '2 cups please';
* assert.isNotNumber(cups, 'how many cups');
*
* @name isNotNumber
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotNumber = function (val, msg) {
new Assertion(val, msg, assert.isNotNumber, true).to.not.be.a('number');
};
/**
* ### .isFinite(value, [message])
*
* Asserts that `value` is a finite number. Unlike `.isNumber`, this will fail for `NaN` and `Infinity`.
*
* var cups = 2;
* assert.isFinite(cups, 'how many cups');
*
* assert.isFinite(NaN); // throws
*
* @name isFinite
* @param {Number} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isFinite = function (val, msg) {
new Assertion(val, msg, assert.isFinite, true).to.be.finite;
};
/**
* ### .isBoolean(value, [message])
*
* Asserts that `value` is a boolean.
*
* var teaReady = true
* , teaServed = false;
*
* assert.isBoolean(teaReady, 'is the tea ready');
* assert.isBoolean(teaServed, 'has tea been served');
*
* @name isBoolean
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isBoolean = function (val, msg) {
new Assertion(val, msg, assert.isBoolean, true).to.be.a('boolean');
};
/**
* ### .isNotBoolean(value, [message])
*
* Asserts that `value` is _not_ a boolean.
*
* var teaReady = 'yep'
* , teaServed = 'nope';
*
* assert.isNotBoolean(teaReady, 'is the tea ready');
* assert.isNotBoolean(teaServed, 'has tea been served');
*
* @name isNotBoolean
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.isNotBoolean = function (val, msg) {
new Assertion(val, msg, assert.isNotBoolean, true).to.not.be.a('boolean');
};
/**
* ### .typeOf(value, name, [message])
*
* Asserts that `value`'s type is `name`, as determined by
* `Object.prototype.toString`.
*
* assert.typeOf({ tea: 'chai' }, 'object', 'we have an object');
* assert.typeOf(['chai', 'jasmine'], 'array', 'we have an array');
* assert.typeOf('tea', 'string', 'we have a string');
* assert.typeOf(/tea/, 'regexp', 'we have a regular expression');
* assert.typeOf(null, 'null', 'we have a null');
* assert.typeOf(undefined, 'undefined', 'we have an undefined');
*
* @name typeOf
* @param {Mixed} value
* @param {String} name
* @param {String} message
* @namespace Assert
* @api public
*/
assert.typeOf = function (val, type, msg) {
new Assertion(val, msg, assert.typeOf, true).to.be.a(type);
};
/**
* ### .notTypeOf(value, name, [message])
*
* Asserts that `value`'s type is _not_ `name`, as determined by
* `Object.prototype.toString`.
*
* assert.notTypeOf('tea', 'number', 'strings are not numbers');
*
* @name notTypeOf
* @param {Mixed} value
* @param {String} typeof name
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notTypeOf = function (val, type, msg) {
new Assertion(val, msg, assert.notTypeOf, true).to.not.be.a(type);
};
/**
* ### .instanceOf(object, constructor, [message])
*
* Asserts that `value` is an instance of `constructor`.
*
* var Tea = function (name) { this.name = name; }
* , chai = new Tea('chai');
*
* assert.instanceOf(chai, Tea, 'chai is an instance of tea');
*
* @name instanceOf
* @param {Object} object
* @param {Constructor} constructor
* @param {String} message
* @namespace Assert
* @api public
*/
assert.instanceOf = function (val, type, msg) {
new Assertion(val, msg, assert.instanceOf, true).to.be.instanceOf(type);
};
/**
* ### .notInstanceOf(object, constructor, [message])
*
* Asserts `value` is not an instance of `constructor`.
*
* var Tea = function (name) { this.name = name; }
* , chai = new String('chai');
*
* assert.notInstanceOf(chai, Tea, 'chai is not an instance of tea');
*
* @name notInstanceOf
* @param {Object} object
* @param {Constructor} constructor
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notInstanceOf = function (val, type, msg) {
new Assertion(val, msg, assert.notInstanceOf, true)
.to.not.be.instanceOf(type);
};
/**
* ### .include(haystack, needle, [message])
*
* Asserts that `haystack` includes `needle`. Can be used to assert the
* inclusion of a value in an array, a substring in a string, or a subset of
* properties in an object.
*
* assert.include([1,2,3], 2, 'array contains value');
* assert.include('foobar', 'foo', 'string contains substring');
* assert.include({ foo: 'bar', hello: 'universe' }, { foo: 'bar' }, 'object contains property');
*
* Strict equality (===) is used. When asserting the inclusion of a value in
* an array, the array is searched for an element that's strictly equal to the
* given value. When asserting a subset of properties in an object, the object
* is searched for the given property keys, checking that each one is present
* and strictly equal to the given property value. For instance:
*
* var obj1 = {a: 1}
* , obj2 = {b: 2};
* assert.include([obj1, obj2], obj1);
* assert.include({foo: obj1, bar: obj2}, {foo: obj1});
* assert.include({foo: obj1, bar: obj2}, {foo: obj1, bar: obj2});
*
* @name include
* @param {Array|String} haystack
* @param {Mixed} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.include = function (exp, inc, msg) {
new Assertion(exp, msg, assert.include, true).include(inc);
};
/**
* ### .notInclude(haystack, needle, [message])
*
* Asserts that `haystack` does not include `needle`. Can be used to assert
* the absence of a value in an array, a substring in a string, or a subset of
* properties in an object.
*
* assert.notInclude([1,2,3], 4, "array doesn't contain value");
* assert.notInclude('foobar', 'baz', "string doesn't contain substring");
* assert.notInclude({ foo: 'bar', hello: 'universe' }, { foo: 'baz' }, 'object doesn't contain property');
*
* Strict equality (===) is used. When asserting the absence of a value in an
* array, the array is searched to confirm the absence of an element that's
* strictly equal to the given value. When asserting a subset of properties in
* an object, the object is searched to confirm that at least one of the given
* property keys is either not present or not strictly equal to the given
* property value. For instance:
*
* var obj1 = {a: 1}
* , obj2 = {b: 2};
* assert.notInclude([obj1, obj2], {a: 1});
* assert.notInclude({foo: obj1, bar: obj2}, {foo: {a: 1}});
* assert.notInclude({foo: obj1, bar: obj2}, {foo: obj1, bar: {b: 2}});
*
* @name notInclude
* @param {Array|String} haystack
* @param {Mixed} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notInclude = function (exp, inc, msg) {
new Assertion(exp, msg, assert.notInclude, true).not.include(inc);
};
/**
* ### .deepInclude(haystack, needle, [message])
*
* Asserts that `haystack` includes `needle`. Can be used to assert the
* inclusion of a value in an array or a subset of properties in an object.
* Deep equality is used.
*
* var obj1 = {a: 1}
* , obj2 = {b: 2};
* assert.deepInclude([obj1, obj2], {a: 1});
* assert.deepInclude({foo: obj1, bar: obj2}, {foo: {a: 1}});
* assert.deepInclude({foo: obj1, bar: obj2}, {foo: {a: 1}, bar: {b: 2}});
*
* @name deepInclude
* @param {Array|String} haystack
* @param {Mixed} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.deepInclude = function (exp, inc, msg) {
new Assertion(exp, msg, assert.deepInclude, true).deep.include(inc);
};
/**
* ### .notDeepInclude(haystack, needle, [message])
*
* Asserts that `haystack` does not include `needle`. Can be used to assert
* the absence of a value in an array or a subset of properties in an object.
* Deep equality is used.
*
* var obj1 = {a: 1}
* , obj2 = {b: 2};
* assert.notDeepInclude([obj1, obj2], {a: 9});
* assert.notDeepInclude({foo: obj1, bar: obj2}, {foo: {a: 9}});
* assert.notDeepInclude({foo: obj1, bar: obj2}, {foo: {a: 1}, bar: {b: 9}});
*
* @name notDeepInclude
* @param {Array|String} haystack
* @param {Mixed} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notDeepInclude = function (exp, inc, msg) {
new Assertion(exp, msg, assert.notDeepInclude, true).not.deep.include(inc);
};
/**
* ### .nestedInclude(haystack, needle, [message])
*
* Asserts that 'haystack' includes 'needle'.
* Can be used to assert the inclusion of a subset of properties in an
* object.
* Enables the use of dot- and bracket-notation for referencing nested
* properties.
* '[]' and '.' in property names can be escaped using double backslashes.
*
* assert.nestedInclude({'.a': {'b': 'x'}}, {'\\.a.[b]': 'x'});
* assert.nestedInclude({'a': {'[b]': 'x'}}, {'a.\\[b\\]': 'x'});
*
* @name nestedInclude
* @param {Object} haystack
* @param {Object} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.nestedInclude = function (exp, inc, msg) {
new Assertion(exp, msg, assert.nestedInclude, true).nested.include(inc);
};
/**
* ### .notNestedInclude(haystack, needle, [message])
*
* Asserts that 'haystack' does not include 'needle'.
* Can be used to assert the absence of a subset of properties in an
* object.
* Enables the use of dot- and bracket-notation for referencing nested
* properties.
* '[]' and '.' in property names can be escaped using double backslashes.
*
* assert.notNestedInclude({'.a': {'b': 'x'}}, {'\\.a.b': 'y'});
* assert.notNestedInclude({'a': {'[b]': 'x'}}, {'a.\\[b\\]': 'y'});
*
* @name notNestedInclude
* @param {Object} haystack
* @param {Object} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notNestedInclude = function (exp, inc, msg) {
new Assertion(exp, msg, assert.notNestedInclude, true)
.not.nested.include(inc);
};
/**
* ### .deepNestedInclude(haystack, needle, [message])
*
* Asserts that 'haystack' includes 'needle'.
* Can be used to assert the inclusion of a subset of properties in an
* object while checking for deep equality.
* Enables the use of dot- and bracket-notation for referencing nested
* properties.
* '[]' and '.' in property names can be escaped using double backslashes.
*
* assert.deepNestedInclude({a: {b: [{x: 1}]}}, {'a.b[0]': {x: 1}});
* assert.deepNestedInclude({'.a': {'[b]': {x: 1}}}, {'\\.a.\\[b\\]': {x: 1}});
*
* @name deepNestedInclude
* @param {Object} haystack
* @param {Object} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.deepNestedInclude = function(exp, inc, msg) {
new Assertion(exp, msg, assert.deepNestedInclude, true)
.deep.nested.include(inc);
};
/**
* ### .notDeepNestedInclude(haystack, needle, [message])
*
* Asserts that 'haystack' does not include 'needle'.
* Can be used to assert the absence of a subset of properties in an
* object while checking for deep equality.
* Enables the use of dot- and bracket-notation for referencing nested
* properties.
* '[]' and '.' in property names can be escaped using double backslashes.
*
* assert.notDeepNestedInclude({a: {b: [{x: 1}]}}, {'a.b[0]': {y: 1}})
* assert.notDeepNestedInclude({'.a': {'[b]': {x: 1}}}, {'\\.a.\\[b\\]': {y: 2}});
*
* @name notDeepNestedInclude
* @param {Object} haystack
* @param {Object} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notDeepNestedInclude = function(exp, inc, msg) {
new Assertion(exp, msg, assert.notDeepNestedInclude, true)
.not.deep.nested.include(inc);
};
/**
* ### .ownInclude(haystack, needle, [message])
*
* Asserts that 'haystack' includes 'needle'.
* Can be used to assert the inclusion of a subset of properties in an
* object while ignoring inherited properties.
*
* assert.ownInclude({ a: 1 }, { a: 1 });
*
* @name ownInclude
* @param {Object} haystack
* @param {Object} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.ownInclude = function(exp, inc, msg) {
new Assertion(exp, msg, assert.ownInclude, true).own.include(inc);
};
/**
* ### .notOwnInclude(haystack, needle, [message])
*
* Asserts that 'haystack' includes 'needle'.
* Can be used to assert the absence of a subset of properties in an
* object while ignoring inherited properties.
*
* Object.prototype.b = 2;
*
* assert.notOwnInclude({ a: 1 }, { b: 2 });
*
* @name notOwnInclude
* @param {Object} haystack
* @param {Object} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notOwnInclude = function(exp, inc, msg) {
new Assertion(exp, msg, assert.notOwnInclude, true).not.own.include(inc);
};
/**
* ### .deepOwnInclude(haystack, needle, [message])
*
* Asserts that 'haystack' includes 'needle'.
* Can be used to assert the inclusion of a subset of properties in an
* object while ignoring inherited properties and checking for deep equality.
*
* assert.deepOwnInclude({a: {b: 2}}, {a: {b: 2}});
*
* @name deepOwnInclude
* @param {Object} haystack
* @param {Object} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.deepOwnInclude = function(exp, inc, msg) {
new Assertion(exp, msg, assert.deepOwnInclude, true)
.deep.own.include(inc);
};
/**
* ### .notDeepOwnInclude(haystack, needle, [message])
*
* Asserts that 'haystack' includes 'needle'.
* Can be used to assert the absence of a subset of properties in an
* object while ignoring inherited properties and checking for deep equality.
*
* assert.notDeepOwnInclude({a: {b: 2}}, {a: {c: 3}});
*
* @name notDeepOwnInclude
* @param {Object} haystack
* @param {Object} needle
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notDeepOwnInclude = function(exp, inc, msg) {
new Assertion(exp, msg, assert.notDeepOwnInclude, true)
.not.deep.own.include(inc);
};
/**
* ### .match(value, regexp, [message])
*
* Asserts that `value` matches the regular expression `regexp`.
*
* assert.match('foobar', /^foo/, 'regexp matches');
*
* @name match
* @param {Mixed} value
* @param {RegExp} regexp
* @param {String} message
* @namespace Assert
* @api public
*/
assert.match = function (exp, re, msg) {
new Assertion(exp, msg, assert.match, true).to.match(re);
};
/**
* ### .notMatch(value, regexp, [message])
*
* Asserts that `value` does not match the regular expression `regexp`.
*
* assert.notMatch('foobar', /^foo/, 'regexp does not match');
*
* @name notMatch
* @param {Mixed} value
* @param {RegExp} regexp
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notMatch = function (exp, re, msg) {
new Assertion(exp, msg, assert.notMatch, true).to.not.match(re);
};
/**
* ### .property(object, property, [message])
*
* Asserts that `object` has a direct or inherited property named by
* `property`.
*
* assert.property({ tea: { green: 'matcha' }}, 'tea');
* assert.property({ tea: { green: 'matcha' }}, 'toString');
*
* @name property
* @param {Object} object
* @param {String} property
* @param {String} message
* @namespace Assert
* @api public
*/
assert.property = function (obj, prop, msg) {
new Assertion(obj, msg, assert.property, true).to.have.property(prop);
};
/**
* ### .notProperty(object, property, [message])
*
* Asserts that `object` does _not_ have a direct or inherited property named
* by `property`.
*
* assert.notProperty({ tea: { green: 'matcha' }}, 'coffee');
*
* @name notProperty
* @param {Object} object
* @param {String} property
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notProperty = function (obj, prop, msg) {
new Assertion(obj, msg, assert.notProperty, true)
.to.not.have.property(prop);
};
/**
* ### .propertyVal(object, property, value, [message])
*
* Asserts that `object` has a direct or inherited property named by
* `property` with a value given by `value`. Uses a strict equality check
* (===).
*
* assert.propertyVal({ tea: 'is good' }, 'tea', 'is good');
*
* @name propertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.propertyVal = function (obj, prop, val, msg) {
new Assertion(obj, msg, assert.propertyVal, true)
.to.have.property(prop, val);
};
/**
* ### .notPropertyVal(object, property, value, [message])
*
* Asserts that `object` does _not_ have a direct or inherited property named
* by `property` with value given by `value`. Uses a strict equality check
* (===).
*
* assert.notPropertyVal({ tea: 'is good' }, 'tea', 'is bad');
* assert.notPropertyVal({ tea: 'is good' }, 'coffee', 'is good');
*
* @name notPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notPropertyVal = function (obj, prop, val, msg) {
new Assertion(obj, msg, assert.notPropertyVal, true)
.to.not.have.property(prop, val);
};
/**
* ### .deepPropertyVal(object, property, value, [message])
*
* Asserts that `object` has a direct or inherited property named by
* `property` with a value given by `value`. Uses a deep equality check.
*
* assert.deepPropertyVal({ tea: { green: 'matcha' } }, 'tea', { green: 'matcha' });
*
* @name deepPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.deepPropertyVal = function (obj, prop, val, msg) {
new Assertion(obj, msg, assert.deepPropertyVal, true)
.to.have.deep.property(prop, val);
};
/**
* ### .notDeepPropertyVal(object, property, value, [message])
*
* Asserts that `object` does _not_ have a direct or inherited property named
* by `property` with value given by `value`. Uses a deep equality check.
*
* assert.notDeepPropertyVal({ tea: { green: 'matcha' } }, 'tea', { black: 'matcha' });
* assert.notDeepPropertyVal({ tea: { green: 'matcha' } }, 'tea', { green: 'oolong' });
* assert.notDeepPropertyVal({ tea: { green: 'matcha' } }, 'coffee', { green: 'matcha' });
*
* @name notDeepPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notDeepPropertyVal = function (obj, prop, val, msg) {
new Assertion(obj, msg, assert.notDeepPropertyVal, true)
.to.not.have.deep.property(prop, val);
};
/**
* ### .ownProperty(object, property, [message])
*
* Asserts that `object` has a direct property named by `property`. Inherited
* properties aren't checked.
*
* assert.ownProperty({ tea: { green: 'matcha' }}, 'tea');
*
* @name ownProperty
* @param {Object} object
* @param {String} property
* @param {String} message
* @api public
*/
assert.ownProperty = function (obj, prop, msg) {
new Assertion(obj, msg, assert.ownProperty, true)
.to.have.own.property(prop);
};
/**
* ### .notOwnProperty(object, property, [message])
*
* Asserts that `object` does _not_ have a direct property named by
* `property`. Inherited properties aren't checked.
*
* assert.notOwnProperty({ tea: { green: 'matcha' }}, 'coffee');
* assert.notOwnProperty({}, 'toString');
*
* @name notOwnProperty
* @param {Object} object
* @param {String} property
* @param {String} message
* @api public
*/
assert.notOwnProperty = function (obj, prop, msg) {
new Assertion(obj, msg, assert.notOwnProperty, true)
.to.not.have.own.property(prop);
};
/**
* ### .ownPropertyVal(object, property, value, [message])
*
* Asserts that `object` has a direct property named by `property` and a value
* equal to the provided `value`. Uses a strict equality check (===).
* Inherited properties aren't checked.
*
* assert.ownPropertyVal({ coffee: 'is good'}, 'coffee', 'is good');
*
* @name ownPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @api public
*/
assert.ownPropertyVal = function (obj, prop, value, msg) {
new Assertion(obj, msg, assert.ownPropertyVal, true)
.to.have.own.property(prop, value);
};
/**
* ### .notOwnPropertyVal(object, property, value, [message])
*
* Asserts that `object` does _not_ have a direct property named by `property`
* with a value equal to the provided `value`. Uses a strict equality check
* (===). Inherited properties aren't checked.
*
* assert.notOwnPropertyVal({ tea: 'is better'}, 'tea', 'is worse');
* assert.notOwnPropertyVal({}, 'toString', Object.prototype.toString);
*
* @name notOwnPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @api public
*/
assert.notOwnPropertyVal = function (obj, prop, value, msg) {
new Assertion(obj, msg, assert.notOwnPropertyVal, true)
.to.not.have.own.property(prop, value);
};
/**
* ### .deepOwnPropertyVal(object, property, value, [message])
*
* Asserts that `object` has a direct property named by `property` and a value
* equal to the provided `value`. Uses a deep equality check. Inherited
* properties aren't checked.
*
* assert.deepOwnPropertyVal({ tea: { green: 'matcha' } }, 'tea', { green: 'matcha' });
*
* @name deepOwnPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @api public
*/
assert.deepOwnPropertyVal = function (obj, prop, value, msg) {
new Assertion(obj, msg, assert.deepOwnPropertyVal, true)
.to.have.deep.own.property(prop, value);
};
/**
* ### .notDeepOwnPropertyVal(object, property, value, [message])
*
* Asserts that `object` does _not_ have a direct property named by `property`
* with a value equal to the provided `value`. Uses a deep equality check.
* Inherited properties aren't checked.
*
* assert.notDeepOwnPropertyVal({ tea: { green: 'matcha' } }, 'tea', { black: 'matcha' });
* assert.notDeepOwnPropertyVal({ tea: { green: 'matcha' } }, 'tea', { green: 'oolong' });
* assert.notDeepOwnPropertyVal({ tea: { green: 'matcha' } }, 'coffee', { green: 'matcha' });
* assert.notDeepOwnPropertyVal({}, 'toString', Object.prototype.toString);
*
* @name notDeepOwnPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @api public
*/
assert.notDeepOwnPropertyVal = function (obj, prop, value, msg) {
new Assertion(obj, msg, assert.notDeepOwnPropertyVal, true)
.to.not.have.deep.own.property(prop, value);
};
/**
* ### .nestedProperty(object, property, [message])
*
* Asserts that `object` has a direct or inherited property named by
* `property`, which can be a string using dot- and bracket-notation for
* nested reference.
*
* assert.nestedProperty({ tea: { green: 'matcha' }}, 'tea.green');
*
* @name nestedProperty
* @param {Object} object
* @param {String} property
* @param {String} message
* @namespace Assert
* @api public
*/
assert.nestedProperty = function (obj, prop, msg) {
new Assertion(obj, msg, assert.nestedProperty, true)
.to.have.nested.property(prop);
};
/**
* ### .notNestedProperty(object, property, [message])
*
* Asserts that `object` does _not_ have a property named by `property`, which
* can be a string using dot- and bracket-notation for nested reference. The
* property cannot exist on the object nor anywhere in its prototype chain.
*
* assert.notNestedProperty({ tea: { green: 'matcha' }}, 'tea.oolong');
*
* @name notNestedProperty
* @param {Object} object
* @param {String} property
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notNestedProperty = function (obj, prop, msg) {
new Assertion(obj, msg, assert.notNestedProperty, true)
.to.not.have.nested.property(prop);
};
/**
* ### .nestedPropertyVal(object, property, value, [message])
*
* Asserts that `object` has a property named by `property` with value given
* by `value`. `property` can use dot- and bracket-notation for nested
* reference. Uses a strict equality check (===).
*
* assert.nestedPropertyVal({ tea: { green: 'matcha' }}, 'tea.green', 'matcha');
*
* @name nestedPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.nestedPropertyVal = function (obj, prop, val, msg) {
new Assertion(obj, msg, assert.nestedPropertyVal, true)
.to.have.nested.property(prop, val);
};
/**
* ### .notNestedPropertyVal(object, property, value, [message])
*
* Asserts that `object` does _not_ have a property named by `property` with
* value given by `value`. `property` can use dot- and bracket-notation for
* nested reference. Uses a strict equality check (===).
*
* assert.notNestedPropertyVal({ tea: { green: 'matcha' }}, 'tea.green', 'konacha');
* assert.notNestedPropertyVal({ tea: { green: 'matcha' }}, 'coffee.green', 'matcha');
*
* @name notNestedPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notNestedPropertyVal = function (obj, prop, val, msg) {
new Assertion(obj, msg, assert.notNestedPropertyVal, true)
.to.not.have.nested.property(prop, val);
};
/**
* ### .deepNestedPropertyVal(object, property, value, [message])
*
* Asserts that `object` has a property named by `property` with a value given
* by `value`. `property` can use dot- and bracket-notation for nested
* reference. Uses a deep equality check.
*
* assert.deepNestedPropertyVal({ tea: { green: { matcha: 'yum' } } }, 'tea.green', { matcha: 'yum' });
*
* @name deepNestedPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.deepNestedPropertyVal = function (obj, prop, val, msg) {
new Assertion(obj, msg, assert.deepNestedPropertyVal, true)
.to.have.deep.nested.property(prop, val);
};
/**
* ### .notDeepNestedPropertyVal(object, property, value, [message])
*
* Asserts that `object` does _not_ have a property named by `property` with
* value given by `value`. `property` can use dot- and bracket-notation for
* nested reference. Uses a deep equality check.
*
* assert.notDeepNestedPropertyVal({ tea: { green: { matcha: 'yum' } } }, 'tea.green', { oolong: 'yum' });
* assert.notDeepNestedPropertyVal({ tea: { green: { matcha: 'yum' } } }, 'tea.green', { matcha: 'yuck' });
* assert.notDeepNestedPropertyVal({ tea: { green: { matcha: 'yum' } } }, 'tea.black', { matcha: 'yum' });
*
* @name notDeepNestedPropertyVal
* @param {Object} object
* @param {String} property
* @param {Mixed} value
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notDeepNestedPropertyVal = function (obj, prop, val, msg) {
new Assertion(obj, msg, assert.notDeepNestedPropertyVal, true)
.to.not.have.deep.nested.property(prop, val);
}
/**
* ### .lengthOf(object, length, [message])
*
* Asserts that `object` has a `length` or `size` with the expected value.
*
* assert.lengthOf([1,2,3], 3, 'array has length of 3');
* assert.lengthOf('foobar', 6, 'string has length of 6');
* assert.lengthOf(new Set([1,2,3]), 3, 'set has size of 3');
* assert.lengthOf(new Map([['a',1],['b',2],['c',3]]), 3, 'map has size of 3');
*
* @name lengthOf
* @param {Mixed} object
* @param {Number} length
* @param {String} message
* @namespace Assert
* @api public
*/
assert.lengthOf = function (exp, len, msg) {
new Assertion(exp, msg, assert.lengthOf, true).to.have.lengthOf(len);
};
/**
* ### .hasAnyKeys(object, [keys], [message])
*
* Asserts that `object` has at least one of the `keys` provided.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.hasAnyKeys({foo: 1, bar: 2, baz: 3}, ['foo', 'iDontExist', 'baz']);
* assert.hasAnyKeys({foo: 1, bar: 2, baz: 3}, {foo: 30, iDontExist: 99, baz: 1337});
* assert.hasAnyKeys(new Map([[{foo: 1}, 'bar'], ['key', 'value']]), [{foo: 1}, 'key']);
* assert.hasAnyKeys(new Set([{foo: 'bar'}, 'anotherKey']), [{foo: 'bar'}, 'anotherKey']);
*
* @name hasAnyKeys
* @param {Mixed} object
* @param {Array|Object} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.hasAnyKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.hasAnyKeys, true).to.have.any.keys(keys);
}
/**
* ### .hasAllKeys(object, [keys], [message])
*
* Asserts that `object` has all and only all of the `keys` provided.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.hasAllKeys({foo: 1, bar: 2, baz: 3}, ['foo', 'bar', 'baz']);
* assert.hasAllKeys({foo: 1, bar: 2, baz: 3}, {foo: 30, bar: 99, baz: 1337]);
* assert.hasAllKeys(new Map([[{foo: 1}, 'bar'], ['key', 'value']]), [{foo: 1}, 'key']);
* assert.hasAllKeys(new Set([{foo: 'bar'}, 'anotherKey'], [{foo: 'bar'}, 'anotherKey']);
*
* @name hasAllKeys
* @param {Mixed} object
* @param {String[]} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.hasAllKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.hasAllKeys, true).to.have.all.keys(keys);
}
/**
* ### .containsAllKeys(object, [keys], [message])
*
* Asserts that `object` has all of the `keys` provided but may have more keys not listed.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.containsAllKeys({foo: 1, bar: 2, baz: 3}, ['foo', 'baz']);
* assert.containsAllKeys({foo: 1, bar: 2, baz: 3}, ['foo', 'bar', 'baz']);
* assert.containsAllKeys({foo: 1, bar: 2, baz: 3}, {foo: 30, baz: 1337});
* assert.containsAllKeys({foo: 1, bar: 2, baz: 3}, {foo: 30, bar: 99, baz: 1337});
* assert.containsAllKeys(new Map([[{foo: 1}, 'bar'], ['key', 'value']]), [{foo: 1}]);
* assert.containsAllKeys(new Map([[{foo: 1}, 'bar'], ['key', 'value']]), [{foo: 1}, 'key']);
* assert.containsAllKeys(new Set([{foo: 'bar'}, 'anotherKey'], [{foo: 'bar'}]);
* assert.containsAllKeys(new Set([{foo: 'bar'}, 'anotherKey'], [{foo: 'bar'}, 'anotherKey']);
*
* @name containsAllKeys
* @param {Mixed} object
* @param {String[]} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.containsAllKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.containsAllKeys, true)
.to.contain.all.keys(keys);
}
/**
* ### .doesNotHaveAnyKeys(object, [keys], [message])
*
* Asserts that `object` has none of the `keys` provided.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.doesNotHaveAnyKeys({foo: 1, bar: 2, baz: 3}, ['one', 'two', 'example']);
* assert.doesNotHaveAnyKeys({foo: 1, bar: 2, baz: 3}, {one: 1, two: 2, example: 'foo'});
* assert.doesNotHaveAnyKeys(new Map([[{foo: 1}, 'bar'], ['key', 'value']]), [{one: 'two'}, 'example']);
* assert.doesNotHaveAnyKeys(new Set([{foo: 'bar'}, 'anotherKey'], [{one: 'two'}, 'example']);
*
* @name doesNotHaveAnyKeys
* @param {Mixed} object
* @param {String[]} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.doesNotHaveAnyKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.doesNotHaveAnyKeys, true)
.to.not.have.any.keys(keys);
}
/**
* ### .doesNotHaveAllKeys(object, [keys], [message])
*
* Asserts that `object` does not have at least one of the `keys` provided.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.doesNotHaveAllKeys({foo: 1, bar: 2, baz: 3}, ['one', 'two', 'example']);
* assert.doesNotHaveAllKeys({foo: 1, bar: 2, baz: 3}, {one: 1, two: 2, example: 'foo'});
* assert.doesNotHaveAllKeys(new Map([[{foo: 1}, 'bar'], ['key', 'value']]), [{one: 'two'}, 'example']);
* assert.doesNotHaveAllKeys(new Set([{foo: 'bar'}, 'anotherKey'], [{one: 'two'}, 'example']);
*
* @name doesNotHaveAllKeys
* @param {Mixed} object
* @param {String[]} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.doesNotHaveAllKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.doesNotHaveAllKeys, true)
.to.not.have.all.keys(keys);
}
/**
* ### .hasAnyDeepKeys(object, [keys], [message])
*
* Asserts that `object` has at least one of the `keys` provided.
* Since Sets and Maps can have objects as keys you can use this assertion to perform
* a deep comparison.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.hasAnyDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [1, 2]]), {one: 'one'});
* assert.hasAnyDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [1, 2]]), [{one: 'one'}, {two: 'two'}]);
* assert.hasAnyDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [{two: 'two'}, 'valueTwo']]), [{one: 'one'}, {two: 'two'}]);
* assert.hasAnyDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), {one: 'one'});
* assert.hasAnyDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), [{one: 'one'}, {three: 'three'}]);
* assert.hasAnyDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), [{one: 'one'}, {two: 'two'}]);
*
* @name doesNotHaveAllKeys
* @param {Mixed} object
* @param {Array|Object} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.hasAnyDeepKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.hasAnyDeepKeys, true)
.to.have.any.deep.keys(keys);
}
/**
* ### .hasAllDeepKeys(object, [keys], [message])
*
* Asserts that `object` has all and only all of the `keys` provided.
* Since Sets and Maps can have objects as keys you can use this assertion to perform
* a deep comparison.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.hasAllDeepKeys(new Map([[{one: 'one'}, 'valueOne']]), {one: 'one'});
* assert.hasAllDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [{two: 'two'}, 'valueTwo']]), [{one: 'one'}, {two: 'two'}]);
* assert.hasAllDeepKeys(new Set([{one: 'one'}]), {one: 'one'});
* assert.hasAllDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), [{one: 'one'}, {two: 'two'}]);
*
* @name hasAllDeepKeys
* @param {Mixed} object
* @param {Array|Object} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.hasAllDeepKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.hasAllDeepKeys, true)
.to.have.all.deep.keys(keys);
}
/**
* ### .containsAllDeepKeys(object, [keys], [message])
*
* Asserts that `object` contains all of the `keys` provided.
* Since Sets and Maps can have objects as keys you can use this assertion to perform
* a deep comparison.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.containsAllDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [1, 2]]), {one: 'one'});
* assert.containsAllDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [{two: 'two'}, 'valueTwo']]), [{one: 'one'}, {two: 'two'}]);
* assert.containsAllDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), {one: 'one'});
* assert.containsAllDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), [{one: 'one'}, {two: 'two'}]);
*
* @name containsAllDeepKeys
* @param {Mixed} object
* @param {Array|Object} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.containsAllDeepKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.containsAllDeepKeys, true)
.to.contain.all.deep.keys(keys);
}
/**
* ### .doesNotHaveAnyDeepKeys(object, [keys], [message])
*
* Asserts that `object` has none of the `keys` provided.
* Since Sets and Maps can have objects as keys you can use this assertion to perform
* a deep comparison.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.doesNotHaveAnyDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [1, 2]]), {thisDoesNot: 'exist'});
* assert.doesNotHaveAnyDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [{two: 'two'}, 'valueTwo']]), [{twenty: 'twenty'}, {fifty: 'fifty'}]);
* assert.doesNotHaveAnyDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), {twenty: 'twenty'});
* assert.doesNotHaveAnyDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), [{twenty: 'twenty'}, {fifty: 'fifty'}]);
*
* @name doesNotHaveAnyDeepKeys
* @param {Mixed} object
* @param {Array|Object} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.doesNotHaveAnyDeepKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.doesNotHaveAnyDeepKeys, true)
.to.not.have.any.deep.keys(keys);
}
/**
* ### .doesNotHaveAllDeepKeys(object, [keys], [message])
*
* Asserts that `object` does not have at least one of the `keys` provided.
* Since Sets and Maps can have objects as keys you can use this assertion to perform
* a deep comparison.
* You can also provide a single object instead of a `keys` array and its keys
* will be used as the expected set of keys.
*
* assert.doesNotHaveAllDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [1, 2]]), {thisDoesNot: 'exist'});
* assert.doesNotHaveAllDeepKeys(new Map([[{one: 'one'}, 'valueOne'], [{two: 'two'}, 'valueTwo']]), [{twenty: 'twenty'}, {one: 'one'}]);
* assert.doesNotHaveAllDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), {twenty: 'twenty'});
* assert.doesNotHaveAllDeepKeys(new Set([{one: 'one'}, {two: 'two'}]), [{one: 'one'}, {fifty: 'fifty'}]);
*
* @name doesNotHaveAllDeepKeys
* @param {Mixed} object
* @param {Array|Object} keys
* @param {String} message
* @namespace Assert
* @api public
*/
assert.doesNotHaveAllDeepKeys = function (obj, keys, msg) {
new Assertion(obj, msg, assert.doesNotHaveAllDeepKeys, true)
.to.not.have.all.deep.keys(keys);
}
/**
* ### .throws(fn, [errorLike/string/regexp], [string/regexp], [message])
*
* If `errorLike` is an `Error` constructor, asserts that `fn` will throw an error that is an
* instance of `errorLike`.
* If `errorLike` is an `Error` instance, asserts that the error thrown is the same
* instance as `errorLike`.
* If `errMsgMatcher` is provided, it also asserts that the error thrown will have a
* message matching `errMsgMatcher`.
*
* assert.throws(fn, 'Error thrown must have this msg');
* assert.throws(fn, /Error thrown must have a msg that matches this/);
* assert.throws(fn, ReferenceError);
* assert.throws(fn, errorInstance);
* assert.throws(fn, ReferenceError, 'Error thrown must be a ReferenceError and have this msg');
* assert.throws(fn, errorInstance, 'Error thrown must be the same errorInstance and have this msg');
* assert.throws(fn, ReferenceError, /Error thrown must be a ReferenceError and match this/);
* assert.throws(fn, errorInstance, /Error thrown must be the same errorInstance and match this/);
*
* @name throws
* @alias throw
* @alias Throw
* @param {Function} fn
* @param {ErrorConstructor|Error} errorLike
* @param {RegExp|String} errMsgMatcher
* @param {String} message
* @see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error#Error_types
* @namespace Assert
* @api public
*/
assert.throws = function (fn, errorLike, errMsgMatcher, msg) {
if ('string' === typeof errorLike || errorLike instanceof RegExp) {
errMsgMatcher = errorLike;
errorLike = null;
}
var assertErr = new Assertion(fn, msg, assert.throws, true)
.to.throw(errorLike, errMsgMatcher);
return flag(assertErr, 'object');
};
/**
* ### .doesNotThrow(fn, [errorLike/string/regexp], [string/regexp], [message])
*
* If `errorLike` is an `Error` constructor, asserts that `fn` will _not_ throw an error that is an
* instance of `errorLike`.
* If `errorLike` is an `Error` instance, asserts that the error thrown is _not_ the same
* instance as `errorLike`.
* If `errMsgMatcher` is provided, it also asserts that the error thrown will _not_ have a
* message matching `errMsgMatcher`.
*
* assert.doesNotThrow(fn, 'Any Error thrown must not have this message');
* assert.doesNotThrow(fn, /Any Error thrown must not match this/);
* assert.doesNotThrow(fn, Error);
* assert.doesNotThrow(fn, errorInstance);
* assert.doesNotThrow(fn, Error, 'Error must not have this message');
* assert.doesNotThrow(fn, errorInstance, 'Error must not have this message');
* assert.doesNotThrow(fn, Error, /Error must not match this/);
* assert.doesNotThrow(fn, errorInstance, /Error must not match this/);
*
* @name doesNotThrow
* @param {Function} fn
* @param {ErrorConstructor} errorLike
* @param {RegExp|String} errMsgMatcher
* @param {String} message
* @see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error#Error_types
* @namespace Assert
* @api public
*/
assert.doesNotThrow = function (fn, errorLike, errMsgMatcher, msg) {
if ('string' === typeof errorLike || errorLike instanceof RegExp) {
errMsgMatcher = errorLike;
errorLike = null;
}
new Assertion(fn, msg, assert.doesNotThrow, true)
.to.not.throw(errorLike, errMsgMatcher);
};
/**
* ### .operator(val1, operator, val2, [message])
*
* Compares two values using `operator`.
*
* assert.operator(1, '<', 2, 'everything is ok');
* assert.operator(1, '>', 2, 'this will fail');
*
* @name operator
* @param {Mixed} val1
* @param {String} operator
* @param {Mixed} val2
* @param {String} message
* @namespace Assert
* @api public
*/
assert.operator = function (val, operator, val2, msg) {
var ok;
switch(operator) {
case '==':
ok = val == val2;
break;
case '===':
ok = val === val2;
break;
case '>':
ok = val > val2;
break;
case '>=':
ok = val >= val2;
break;
case '<':
ok = val < val2;
break;
case '<=':
ok = val <= val2;
break;
case '!=':
ok = val != val2;
break;
case '!==':
ok = val !== val2;
break;
default:
msg = msg ? msg + ': ' : msg;
throw new chai.AssertionError(
msg + 'Invalid operator "' + operator + '"',
undefined,
assert.operator
);
}
var test = new Assertion(ok, msg, assert.operator, true);
test.assert(
true === flag(test, 'object')
, 'expected ' + util.inspect(val) + ' to be ' + operator + ' ' + util.inspect(val2)
, 'expected ' + util.inspect(val) + ' to not be ' + operator + ' ' + util.inspect(val2) );
};
/**
* ### .closeTo(actual, expected, delta, [message])
*
* Asserts that the target is equal `expected`, to within a +/- `delta` range.
*
* assert.closeTo(1.5, 1, 0.5, 'numbers are close');
*
* @name closeTo
* @param {Number} actual
* @param {Number} expected
* @param {Number} delta
* @param {String} message
* @namespace Assert
* @api public
*/
assert.closeTo = function (act, exp, delta, msg) {
new Assertion(act, msg, assert.closeTo, true).to.be.closeTo(exp, delta);
};
/**
* ### .approximately(actual, expected, delta, [message])
*
* Asserts that the target is equal `expected`, to within a +/- `delta` range.
*
* assert.approximately(1.5, 1, 0.5, 'numbers are close');
*
* @name approximately
* @param {Number} actual
* @param {Number} expected
* @param {Number} delta
* @param {String} message
* @namespace Assert
* @api public
*/
assert.approximately = function (act, exp, delta, msg) {
new Assertion(act, msg, assert.approximately, true)
.to.be.approximately(exp, delta);
};
/**
* ### .sameMembers(set1, set2, [message])
*
* Asserts that `set1` and `set2` have the same members in any order. Uses a
* strict equality check (===).
*
* assert.sameMembers([ 1, 2, 3 ], [ 2, 1, 3 ], 'same members');
*
* @name sameMembers
* @param {Array} set1
* @param {Array} set2
* @param {String} message
* @namespace Assert
* @api public
*/
assert.sameMembers = function (set1, set2, msg) {
new Assertion(set1, msg, assert.sameMembers, true)
.to.have.same.members(set2);
}
/**
* ### .notSameMembers(set1, set2, [message])
*
* Asserts that `set1` and `set2` don't have the same members in any order.
* Uses a strict equality check (===).
*
* assert.notSameMembers([ 1, 2, 3 ], [ 5, 1, 3 ], 'not same members');
*
* @name notSameMembers
* @param {Array} set1
* @param {Array} set2
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notSameMembers = function (set1, set2, msg) {
new Assertion(set1, msg, assert.notSameMembers, true)
.to.not.have.same.members(set2);
}
/**
* ### .sameDeepMembers(set1, set2, [message])
*
* Asserts that `set1` and `set2` have the same members in any order. Uses a
* deep equality check.
*
* assert.sameDeepMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [{ b: 2 }, { a: 1 }, { c: 3 }], 'same deep members');
*
* @name sameDeepMembers
* @param {Array} set1
* @param {Array} set2
* @param {String} message
* @namespace Assert
* @api public
*/
assert.sameDeepMembers = function (set1, set2, msg) {
new Assertion(set1, msg, assert.sameDeepMembers, true)
.to.have.same.deep.members(set2);
}
/**
* ### .notSameDeepMembers(set1, set2, [message])
*
* Asserts that `set1` and `set2` don't have the same members in any order.
* Uses a deep equality check.
*
* assert.notSameDeepMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [{ b: 2 }, { a: 1 }, { f: 5 }], 'not same deep members');
*
* @name notSameDeepMembers
* @param {Array} set1
* @param {Array} set2
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notSameDeepMembers = function (set1, set2, msg) {
new Assertion(set1, msg, assert.notSameDeepMembers, true)
.to.not.have.same.deep.members(set2);
}
/**
* ### .sameOrderedMembers(set1, set2, [message])
*
* Asserts that `set1` and `set2` have the same members in the same order.
* Uses a strict equality check (===).
*
* assert.sameOrderedMembers([ 1, 2, 3 ], [ 1, 2, 3 ], 'same ordered members');
*
* @name sameOrderedMembers
* @param {Array} set1
* @param {Array} set2
* @param {String} message
* @namespace Assert
* @api public
*/
assert.sameOrderedMembers = function (set1, set2, msg) {
new Assertion(set1, msg, assert.sameOrderedMembers, true)
.to.have.same.ordered.members(set2);
}
/**
* ### .notSameOrderedMembers(set1, set2, [message])
*
* Asserts that `set1` and `set2` don't have the same members in the same
* order. Uses a strict equality check (===).
*
* assert.notSameOrderedMembers([ 1, 2, 3 ], [ 2, 1, 3 ], 'not same ordered members');
*
* @name notSameOrderedMembers
* @param {Array} set1
* @param {Array} set2
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notSameOrderedMembers = function (set1, set2, msg) {
new Assertion(set1, msg, assert.notSameOrderedMembers, true)
.to.not.have.same.ordered.members(set2);
}
/**
* ### .sameDeepOrderedMembers(set1, set2, [message])
*
* Asserts that `set1` and `set2` have the same members in the same order.
* Uses a deep equality check.
*
* assert.sameDeepOrderedMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [ { a: 1 }, { b: 2 }, { c: 3 } ], 'same deep ordered members');
*
* @name sameDeepOrderedMembers
* @param {Array} set1
* @param {Array} set2
* @param {String} message
* @namespace Assert
* @api public
*/
assert.sameDeepOrderedMembers = function (set1, set2, msg) {
new Assertion(set1, msg, assert.sameDeepOrderedMembers, true)
.to.have.same.deep.ordered.members(set2);
}
/**
* ### .notSameDeepOrderedMembers(set1, set2, [message])
*
* Asserts that `set1` and `set2` don't have the same members in the same
* order. Uses a deep equality check.
*
* assert.notSameDeepOrderedMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [ { a: 1 }, { b: 2 }, { z: 5 } ], 'not same deep ordered members');
* assert.notSameDeepOrderedMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [ { b: 2 }, { a: 1 }, { c: 3 } ], 'not same deep ordered members');
*
* @name notSameDeepOrderedMembers
* @param {Array} set1
* @param {Array} set2
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notSameDeepOrderedMembers = function (set1, set2, msg) {
new Assertion(set1, msg, assert.notSameDeepOrderedMembers, true)
.to.not.have.same.deep.ordered.members(set2);
}
/**
* ### .includeMembers(superset, subset, [message])
*
* Asserts that `subset` is included in `superset` in any order. Uses a
* strict equality check (===). Duplicates are ignored.
*
* assert.includeMembers([ 1, 2, 3 ], [ 2, 1, 2 ], 'include members');
*
* @name includeMembers
* @param {Array} superset
* @param {Array} subset
* @param {String} message
* @namespace Assert
* @api public
*/
assert.includeMembers = function (superset, subset, msg) {
new Assertion(superset, msg, assert.includeMembers, true)
.to.include.members(subset);
}
/**
* ### .notIncludeMembers(superset, subset, [message])
*
* Asserts that `subset` isn't included in `superset` in any order. Uses a
* strict equality check (===). Duplicates are ignored.
*
* assert.notIncludeMembers([ 1, 2, 3 ], [ 5, 1 ], 'not include members');
*
* @name notIncludeMembers
* @param {Array} superset
* @param {Array} subset
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notIncludeMembers = function (superset, subset, msg) {
new Assertion(superset, msg, assert.notIncludeMembers, true)
.to.not.include.members(subset);
}
/**
* ### .includeDeepMembers(superset, subset, [message])
*
* Asserts that `subset` is included in `superset` in any order. Uses a deep
* equality check. Duplicates are ignored.
*
* assert.includeDeepMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [ { b: 2 }, { a: 1 }, { b: 2 } ], 'include deep members');
*
* @name includeDeepMembers
* @param {Array} superset
* @param {Array} subset
* @param {String} message
* @namespace Assert
* @api public
*/
assert.includeDeepMembers = function (superset, subset, msg) {
new Assertion(superset, msg, assert.includeDeepMembers, true)
.to.include.deep.members(subset);
}
/**
* ### .notIncludeDeepMembers(superset, subset, [message])
*
* Asserts that `subset` isn't included in `superset` in any order. Uses a
* deep equality check. Duplicates are ignored.
*
* assert.notIncludeDeepMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [ { b: 2 }, { f: 5 } ], 'not include deep members');
*
* @name notIncludeDeepMembers
* @param {Array} superset
* @param {Array} subset
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notIncludeDeepMembers = function (superset, subset, msg) {
new Assertion(superset, msg, assert.notIncludeDeepMembers, true)
.to.not.include.deep.members(subset);
}
/**
* ### .includeOrderedMembers(superset, subset, [message])
*
* Asserts that `subset` is included in `superset` in the same order
* beginning with the first element in `superset`. Uses a strict equality
* check (===).
*
* assert.includeOrderedMembers([ 1, 2, 3 ], [ 1, 2 ], 'include ordered members');
*
* @name includeOrderedMembers
* @param {Array} superset
* @param {Array} subset
* @param {String} message
* @namespace Assert
* @api public
*/
assert.includeOrderedMembers = function (superset, subset, msg) {
new Assertion(superset, msg, assert.includeOrderedMembers, true)
.to.include.ordered.members(subset);
}
/**
* ### .notIncludeOrderedMembers(superset, subset, [message])
*
* Asserts that `subset` isn't included in `superset` in the same order
* beginning with the first element in `superset`. Uses a strict equality
* check (===).
*
* assert.notIncludeOrderedMembers([ 1, 2, 3 ], [ 2, 1 ], 'not include ordered members');
* assert.notIncludeOrderedMembers([ 1, 2, 3 ], [ 2, 3 ], 'not include ordered members');
*
* @name notIncludeOrderedMembers
* @param {Array} superset
* @param {Array} subset
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notIncludeOrderedMembers = function (superset, subset, msg) {
new Assertion(superset, msg, assert.notIncludeOrderedMembers, true)
.to.not.include.ordered.members(subset);
}
/**
* ### .includeDeepOrderedMembers(superset, subset, [message])
*
* Asserts that `subset` is included in `superset` in the same order
* beginning with the first element in `superset`. Uses a deep equality
* check.
*
* assert.includeDeepOrderedMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [ { a: 1 }, { b: 2 } ], 'include deep ordered members');
*
* @name includeDeepOrderedMembers
* @param {Array} superset
* @param {Array} subset
* @param {String} message
* @namespace Assert
* @api public
*/
assert.includeDeepOrderedMembers = function (superset, subset, msg) {
new Assertion(superset, msg, assert.includeDeepOrderedMembers, true)
.to.include.deep.ordered.members(subset);
}
/**
* ### .notIncludeDeepOrderedMembers(superset, subset, [message])
*
* Asserts that `subset` isn't included in `superset` in the same order
* beginning with the first element in `superset`. Uses a deep equality
* check.
*
* assert.notIncludeDeepOrderedMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [ { a: 1 }, { f: 5 } ], 'not include deep ordered members');
* assert.notIncludeDeepOrderedMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [ { b: 2 }, { a: 1 } ], 'not include deep ordered members');
* assert.notIncludeDeepOrderedMembers([ { a: 1 }, { b: 2 }, { c: 3 } ], [ { b: 2 }, { c: 3 } ], 'not include deep ordered members');
*
* @name notIncludeDeepOrderedMembers
* @param {Array} superset
* @param {Array} subset
* @param {String} message
* @namespace Assert
* @api public
*/
assert.notIncludeDeepOrderedMembers = function (superset, subset, msg) {
new Assertion(superset, msg, assert.notIncludeDeepOrderedMembers, true)
.to.not.include.deep.ordered.members(subset);
}
/**
* ### .oneOf(inList, list, [message])
*
* Asserts that non-object, non-array value `inList` appears in the flat array `list`.
*
* assert.oneOf(1, [ 2, 1 ], 'Not found in list');
*
* @name oneOf
* @param {*} inList
* @param {Array<*>} list
* @param {String} message
* @namespace Assert
* @api public
*/
assert.oneOf = function (inList, list, msg) {
new Assertion(inList, msg, assert.oneOf, true).to.be.oneOf(list);
}
/**
* ### .changes(function, object, property, [message])
*
* Asserts that a function changes the value of a property.
*
* var obj = { val: 10 };
* var fn = function() { obj.val = 22 };
* assert.changes(fn, obj, 'val');
*
* @name changes
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.changes = function (fn, obj, prop, msg) {
if (arguments.length === 3 && typeof obj === 'function') {
msg = prop;
prop = null;
}
new Assertion(fn, msg, assert.changes, true).to.change(obj, prop);
}
/**
* ### .changesBy(function, object, property, delta, [message])
*
* Asserts that a function changes the value of a property by an amount (delta).
*
* var obj = { val: 10 };
* var fn = function() { obj.val += 2 };
* assert.changesBy(fn, obj, 'val', 2);
*
* @name changesBy
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {Number} change amount (delta)
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.changesBy = function (fn, obj, prop, delta, msg) {
if (arguments.length === 4 && typeof obj === 'function') {
var tmpMsg = delta;
delta = prop;
msg = tmpMsg;
} else if (arguments.length === 3) {
delta = prop;
prop = null;
}
new Assertion(fn, msg, assert.changesBy, true)
.to.change(obj, prop).by(delta);
}
/**
* ### .doesNotChange(function, object, property, [message])
*
* Asserts that a function does not change the value of a property.
*
* var obj = { val: 10 };
* var fn = function() { console.log('foo'); };
* assert.doesNotChange(fn, obj, 'val');
*
* @name doesNotChange
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.doesNotChange = function (fn, obj, prop, msg) {
if (arguments.length === 3 && typeof obj === 'function') {
msg = prop;
prop = null;
}
return new Assertion(fn, msg, assert.doesNotChange, true)
.to.not.change(obj, prop);
}
/**
* ### .changesButNotBy(function, object, property, delta, [message])
*
* Asserts that a function does not change the value of a property or of a function's return value by an amount (delta)
*
* var obj = { val: 10 };
* var fn = function() { obj.val += 10 };
* assert.changesButNotBy(fn, obj, 'val', 5);
*
* @name changesButNotBy
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {Number} change amount (delta)
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.changesButNotBy = function (fn, obj, prop, delta, msg) {
if (arguments.length === 4 && typeof obj === 'function') {
var tmpMsg = delta;
delta = prop;
msg = tmpMsg;
} else if (arguments.length === 3) {
delta = prop;
prop = null;
}
new Assertion(fn, msg, assert.changesButNotBy, true)
.to.change(obj, prop).but.not.by(delta);
}
/**
* ### .increases(function, object, property, [message])
*
* Asserts that a function increases a numeric object property.
*
* var obj = { val: 10 };
* var fn = function() { obj.val = 13 };
* assert.increases(fn, obj, 'val');
*
* @name increases
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.increases = function (fn, obj, prop, msg) {
if (arguments.length === 3 && typeof obj === 'function') {
msg = prop;
prop = null;
}
return new Assertion(fn, msg, assert.increases, true)
.to.increase(obj, prop);
}
/**
* ### .increasesBy(function, object, property, delta, [message])
*
* Asserts that a function increases a numeric object property or a function's return value by an amount (delta).
*
* var obj = { val: 10 };
* var fn = function() { obj.val += 10 };
* assert.increasesBy(fn, obj, 'val', 10);
*
* @name increasesBy
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {Number} change amount (delta)
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.increasesBy = function (fn, obj, prop, delta, msg) {
if (arguments.length === 4 && typeof obj === 'function') {
var tmpMsg = delta;
delta = prop;
msg = tmpMsg;
} else if (arguments.length === 3) {
delta = prop;
prop = null;
}
new Assertion(fn, msg, assert.increasesBy, true)
.to.increase(obj, prop).by(delta);
}
/**
* ### .doesNotIncrease(function, object, property, [message])
*
* Asserts that a function does not increase a numeric object property.
*
* var obj = { val: 10 };
* var fn = function() { obj.val = 8 };
* assert.doesNotIncrease(fn, obj, 'val');
*
* @name doesNotIncrease
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.doesNotIncrease = function (fn, obj, prop, msg) {
if (arguments.length === 3 && typeof obj === 'function') {
msg = prop;
prop = null;
}
return new Assertion(fn, msg, assert.doesNotIncrease, true)
.to.not.increase(obj, prop);
}
/**
* ### .increasesButNotBy(function, object, property, [message])
*
* Asserts that a function does not increase a numeric object property or function's return value by an amount (delta).
*
* var obj = { val: 10 };
* var fn = function() { obj.val = 15 };
* assert.increasesButNotBy(fn, obj, 'val', 10);
*
* @name increasesButNotBy
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {Number} change amount (delta)
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.increasesButNotBy = function (fn, obj, prop, delta, msg) {
if (arguments.length === 4 && typeof obj === 'function') {
var tmpMsg = delta;
delta = prop;
msg = tmpMsg;
} else if (arguments.length === 3) {
delta = prop;
prop = null;
}
new Assertion(fn, msg, assert.increasesButNotBy, true)
.to.increase(obj, prop).but.not.by(delta);
}
/**
* ### .decreases(function, object, property, [message])
*
* Asserts that a function decreases a numeric object property.
*
* var obj = { val: 10 };
* var fn = function() { obj.val = 5 };
* assert.decreases(fn, obj, 'val');
*
* @name decreases
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.decreases = function (fn, obj, prop, msg) {
if (arguments.length === 3 && typeof obj === 'function') {
msg = prop;
prop = null;
}
return new Assertion(fn, msg, assert.decreases, true)
.to.decrease(obj, prop);
}
/**
* ### .decreasesBy(function, object, property, delta, [message])
*
* Asserts that a function decreases a numeric object property or a function's return value by an amount (delta)
*
* var obj = { val: 10 };
* var fn = function() { obj.val -= 5 };
* assert.decreasesBy(fn, obj, 'val', 5);
*
* @name decreasesBy
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {Number} change amount (delta)
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.decreasesBy = function (fn, obj, prop, delta, msg) {
if (arguments.length === 4 && typeof obj === 'function') {
var tmpMsg = delta;
delta = prop;
msg = tmpMsg;
} else if (arguments.length === 3) {
delta = prop;
prop = null;
}
new Assertion(fn, msg, assert.decreasesBy, true)
.to.decrease(obj, prop).by(delta);
}
/**
* ### .doesNotDecrease(function, object, property, [message])
*
* Asserts that a function does not decreases a numeric object property.
*
* var obj = { val: 10 };
* var fn = function() { obj.val = 15 };
* assert.doesNotDecrease(fn, obj, 'val');
*
* @name doesNotDecrease
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.doesNotDecrease = function (fn, obj, prop, msg) {
if (arguments.length === 3 && typeof obj === 'function') {
msg = prop;
prop = null;
}
return new Assertion(fn, msg, assert.doesNotDecrease, true)
.to.not.decrease(obj, prop);
}
/**
* ### .doesNotDecreaseBy(function, object, property, delta, [message])
*
* Asserts that a function does not decreases a numeric object property or a function's return value by an amount (delta)
*
* var obj = { val: 10 };
* var fn = function() { obj.val = 5 };
* assert.doesNotDecreaseBy(fn, obj, 'val', 1);
*
* @name doesNotDecrease
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {Number} change amount (delta)
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.doesNotDecreaseBy = function (fn, obj, prop, delta, msg) {
if (arguments.length === 4 && typeof obj === 'function') {
var tmpMsg = delta;
delta = prop;
msg = tmpMsg;
} else if (arguments.length === 3) {
delta = prop;
prop = null;
}
return new Assertion(fn, msg, assert.doesNotDecreaseBy, true)
.to.not.decrease(obj, prop).by(delta);
}
/**
* ### .decreasesButNotBy(function, object, property, delta, [message])
*
* Asserts that a function does not decreases a numeric object property or a function's return value by an amount (delta)
*
* var obj = { val: 10 };
* var fn = function() { obj.val = 5 };
* assert.decreasesButNotBy(fn, obj, 'val', 1);
*
* @name decreasesButNotBy
* @param {Function} modifier function
* @param {Object} object or getter function
* @param {String} property name _optional_
* @param {Number} change amount (delta)
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.decreasesButNotBy = function (fn, obj, prop, delta, msg) {
if (arguments.length === 4 && typeof obj === 'function') {
var tmpMsg = delta;
delta = prop;
msg = tmpMsg;
} else if (arguments.length === 3) {
delta = prop;
prop = null;
}
new Assertion(fn, msg, assert.decreasesButNotBy, true)
.to.decrease(obj, prop).but.not.by(delta);
}
/*!
* ### .ifError(object)
*
* Asserts if value is not a false value, and throws if it is a true value.
* This is added to allow for chai to be a drop-in replacement for Node's
* assert class.
*
* var err = new Error('I am a custom error');
* assert.ifError(err); // Rethrows err!
*
* @name ifError
* @param {Object} object
* @namespace Assert
* @api public
*/
assert.ifError = function (val) {
if (val) {
throw(val);
}
};
/**
* ### .isExtensible(object)
*
* Asserts that `object` is extensible (can have new properties added to it).
*
* assert.isExtensible({});
*
* @name isExtensible
* @alias extensible
* @param {Object} object
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.isExtensible = function (obj, msg) {
new Assertion(obj, msg, assert.isExtensible, true).to.be.extensible;
};
/**
* ### .isNotExtensible(object)
*
* Asserts that `object` is _not_ extensible.
*
* var nonExtensibleObject = Object.preventExtensions({});
* var sealedObject = Object.seal({});
* var frozenObject = Object.freeze({});
*
* assert.isNotExtensible(nonExtensibleObject);
* assert.isNotExtensible(sealedObject);
* assert.isNotExtensible(frozenObject);
*
* @name isNotExtensible
* @alias notExtensible
* @param {Object} object
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.isNotExtensible = function (obj, msg) {
new Assertion(obj, msg, assert.isNotExtensible, true).to.not.be.extensible;
};
/**
* ### .isSealed(object)
*
* Asserts that `object` is sealed (cannot have new properties added to it
* and its existing properties cannot be removed).
*
* var sealedObject = Object.seal({});
* var frozenObject = Object.seal({});
*
* assert.isSealed(sealedObject);
* assert.isSealed(frozenObject);
*
* @name isSealed
* @alias sealed
* @param {Object} object
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.isSealed = function (obj, msg) {
new Assertion(obj, msg, assert.isSealed, true).to.be.sealed;
};
/**
* ### .isNotSealed(object)
*
* Asserts that `object` is _not_ sealed.
*
* assert.isNotSealed({});
*
* @name isNotSealed
* @alias notSealed
* @param {Object} object
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.isNotSealed = function (obj, msg) {
new Assertion(obj, msg, assert.isNotSealed, true).to.not.be.sealed;
};
/**
* ### .isFrozen(object)
*
* Asserts that `object` is frozen (cannot have new properties added to it
* and its existing properties cannot be modified).
*
* var frozenObject = Object.freeze({});
* assert.frozen(frozenObject);
*
* @name isFrozen
* @alias frozen
* @param {Object} object
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.isFrozen = function (obj, msg) {
new Assertion(obj, msg, assert.isFrozen, true).to.be.frozen;
};
/**
* ### .isNotFrozen(object)
*
* Asserts that `object` is _not_ frozen.
*
* assert.isNotFrozen({});
*
* @name isNotFrozen
* @alias notFrozen
* @param {Object} object
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.isNotFrozen = function (obj, msg) {
new Assertion(obj, msg, assert.isNotFrozen, true).to.not.be.frozen;
};
/**
* ### .isEmpty(target)
*
* Asserts that the target does not contain any values.
* For arrays and strings, it checks the `length` property.
* For `Map` and `Set` instances, it checks the `size` property.
* For non-function objects, it gets the count of own
* enumerable string keys.
*
* assert.isEmpty([]);
* assert.isEmpty('');
* assert.isEmpty(new Map);
* assert.isEmpty({});
*
* @name isEmpty
* @alias empty
* @param {Object|Array|String|Map|Set} target
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.isEmpty = function(val, msg) {
new Assertion(val, msg, assert.isEmpty, true).to.be.empty;
};
/**
* ### .isNotEmpty(target)
*
* Asserts that the target contains values.
* For arrays and strings, it checks the `length` property.
* For `Map` and `Set` instances, it checks the `size` property.
* For non-function objects, it gets the count of own
* enumerable string keys.
*
* assert.isNotEmpty([1, 2]);
* assert.isNotEmpty('34');
* assert.isNotEmpty(new Set([5, 6]));
* assert.isNotEmpty({ key: 7 });
*
* @name isNotEmpty
* @alias notEmpty
* @param {Object|Array|String|Map|Set} target
* @param {String} message _optional_
* @namespace Assert
* @api public
*/
assert.isNotEmpty = function(val, msg) {
new Assertion(val, msg, assert.isNotEmpty, true).to.not.be.empty;
};
/*!
* Aliases.
*/
(function alias(name, as){
assert[as] = assert[name];
return alias;
})
('isOk', 'ok')
('isNotOk', 'notOk')
('throws', 'throw')
('throws', 'Throw')
('isExtensible', 'extensible')
('isNotExtensible', 'notExtensible')
('isSealed', 'sealed')
('isNotSealed', 'notSealed')
('isFrozen', 'frozen')
('isNotFrozen', 'notFrozen')
('isEmpty', 'empty')
('isNotEmpty', 'notEmpty');
};
},{}],7:[function(require,module,exports){
/*!
* chai
* Copyright(c) 2011-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
module.exports = function (chai, util) {
chai.expect = function (val, message) {
return new chai.Assertion(val, message);
};
/**
* ### .fail([message])
* ### .fail(actual, expected, [message], [operator])
*
* Throw a failure.
*
* expect.fail();
* expect.fail("custom error message");
* expect.fail(1, 2);
* expect.fail(1, 2, "custom error message");
* expect.fail(1, 2, "custom error message", ">");
* expect.fail(1, 2, undefined, ">");
*
* @name fail
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @param {String} operator
* @namespace BDD
* @api public
*/
chai.expect.fail = function (actual, expected, message, operator) {
if (arguments.length < 2) {
message = actual;
actual = undefined;
}
message = message || 'expect.fail()';
throw new chai.AssertionError(message, {
actual: actual
, expected: expected
, operator: operator
}, chai.expect.fail);
};
};
},{}],8:[function(require,module,exports){
/*!
* chai
* Copyright(c) 2011-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
module.exports = function (chai, util) {
var Assertion = chai.Assertion;
function loadShould () {
// explicitly define this method as function as to have it's name to include as `ssfi`
function shouldGetter() {
if (this instanceof String
|| this instanceof Number
|| this instanceof Boolean
|| typeof Symbol === 'function' && this instanceof Symbol) {
return new Assertion(this.valueOf(), null, shouldGetter);
}
return new Assertion(this, null, shouldGetter);
}
function shouldSetter(value) {
// See https://github.com/chaijs/chai/issues/86: this makes
// `whatever.should = someValue` actually set `someValue`, which is
// especially useful for `global.should = require('chai').should()`.
//
// Note that we have to use [[DefineProperty]] instead of [[Put]]
// since otherwise we would trigger this very setter!
Object.defineProperty(this, 'should', {
value: value,
enumerable: true,
configurable: true,
writable: true
});
}
// modify Object.prototype to have `should`
Object.defineProperty(Object.prototype, 'should', {
set: shouldSetter
, get: shouldGetter
, configurable: true
});
var should = {};
/**
* ### .fail([message])
* ### .fail(actual, expected, [message], [operator])
*
* Throw a failure.
*
* should.fail();
* should.fail("custom error message");
* should.fail(1, 2);
* should.fail(1, 2, "custom error message");
* should.fail(1, 2, "custom error message", ">");
* should.fail(1, 2, undefined, ">");
*
*
* @name fail
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @param {String} operator
* @namespace BDD
* @api public
*/
should.fail = function (actual, expected, message, operator) {
if (arguments.length < 2) {
message = actual;
actual = undefined;
}
message = message || 'should.fail()';
throw new chai.AssertionError(message, {
actual: actual
, expected: expected
, operator: operator
}, should.fail);
};
/**
* ### .equal(actual, expected, [message])
*
* Asserts non-strict equality (`==`) of `actual` and `expected`.
*
* should.equal(3, '3', '== coerces values to strings');
*
* @name equal
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @namespace Should
* @api public
*/
should.equal = function (val1, val2, msg) {
new Assertion(val1, msg).to.equal(val2);
};
/**
* ### .throw(function, [constructor/string/regexp], [string/regexp], [message])
*
* Asserts that `function` will throw an error that is an instance of
* `constructor`, or alternately that it will throw an error with message
* matching `regexp`.
*
* should.throw(fn, 'function throws a reference error');
* should.throw(fn, /function throws a reference error/);
* should.throw(fn, ReferenceError);
* should.throw(fn, ReferenceError, 'function throws a reference error');
* should.throw(fn, ReferenceError, /function throws a reference error/);
*
* @name throw
* @alias Throw
* @param {Function} function
* @param {ErrorConstructor} constructor
* @param {RegExp} regexp
* @param {String} message
* @see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error#Error_types
* @namespace Should
* @api public
*/
should.Throw = function (fn, errt, errs, msg) {
new Assertion(fn, msg).to.Throw(errt, errs);
};
/**
* ### .exist
*
* Asserts that the target is neither `null` nor `undefined`.
*
* var foo = 'hi';
*
* should.exist(foo, 'foo exists');
*
* @name exist
* @namespace Should
* @api public
*/
should.exist = function (val, msg) {
new Assertion(val, msg).to.exist;
}
// negation
should.not = {}
/**
* ### .not.equal(actual, expected, [message])
*
* Asserts non-strict inequality (`!=`) of `actual` and `expected`.
*
* should.not.equal(3, 4, 'these numbers are not equal');
*
* @name not.equal
* @param {Mixed} actual
* @param {Mixed} expected
* @param {String} message
* @namespace Should
* @api public
*/
should.not.equal = function (val1, val2, msg) {
new Assertion(val1, msg).to.not.equal(val2);
};
/**
* ### .throw(function, [constructor/regexp], [message])
*
* Asserts that `function` will _not_ throw an error that is an instance of
* `constructor`, or alternately that it will not throw an error with message
* matching `regexp`.
*
* should.not.throw(fn, Error, 'function does not throw');
*
* @name not.throw
* @alias not.Throw
* @param {Function} function
* @param {ErrorConstructor} constructor
* @param {RegExp} regexp
* @param {String} message
* @see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error#Error_types
* @namespace Should
* @api public
*/
should.not.Throw = function (fn, errt, errs, msg) {
new Assertion(fn, msg).to.not.Throw(errt, errs);
};
/**
* ### .not.exist
*
* Asserts that the target is neither `null` nor `undefined`.
*
* var bar = null;
*
* should.not.exist(bar, 'bar does not exist');
*
* @name not.exist
* @namespace Should
* @api public
*/
should.not.exist = function (val, msg) {
new Assertion(val, msg).to.not.exist;
}
should['throw'] = should['Throw'];
should.not['throw'] = should.not['Throw'];
return should;
};
chai.should = loadShould;
chai.Should = loadShould;
};
},{}],9:[function(require,module,exports){
/*!
* Chai - addChainingMethod utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/*!
* Module dependencies
*/
var addLengthGuard = require('./addLengthGuard');
var chai = require('../../chai');
var flag = require('./flag');
var proxify = require('./proxify');
var transferFlags = require('./transferFlags');
/*!
* Module variables
*/
// Check whether `Object.setPrototypeOf` is supported
var canSetPrototype = typeof Object.setPrototypeOf === 'function';
// Without `Object.setPrototypeOf` support, this module will need to add properties to a function.
// However, some of functions' own props are not configurable and should be skipped.
var testFn = function() {};
var excludeNames = Object.getOwnPropertyNames(testFn).filter(function(name) {
var propDesc = Object.getOwnPropertyDescriptor(testFn, name);
// Note: PhantomJS 1.x includes `callee` as one of `testFn`'s own properties,
// but then returns `undefined` as the property descriptor for `callee`. As a
// workaround, we perform an otherwise unnecessary type-check for `propDesc`,
// and then filter it out if it's not an object as it should be.
if (typeof propDesc !== 'object')
return true;
return !propDesc.configurable;
});
// Cache `Function` properties
var call = Function.prototype.call,
apply = Function.prototype.apply;
/**
* ### .addChainableMethod(ctx, name, method, chainingBehavior)
*
* Adds a method to an object, such that the method can also be chained.
*
* utils.addChainableMethod(chai.Assertion.prototype, 'foo', function (str) {
* var obj = utils.flag(this, 'object');
* new chai.Assertion(obj).to.be.equal(str);
* });
*
* Can also be accessed directly from `chai.Assertion`.
*
* chai.Assertion.addChainableMethod('foo', fn, chainingBehavior);
*
* The result can then be used as both a method assertion, executing both `method` and
* `chainingBehavior`, or as a language chain, which only executes `chainingBehavior`.
*
* expect(fooStr).to.be.foo('bar');
* expect(fooStr).to.be.foo.equal('foo');
*
* @param {Object} ctx object to which the method is added
* @param {String} name of method to add
* @param {Function} method function to be used for `name`, when called
* @param {Function} chainingBehavior function to be called every time the property is accessed
* @namespace Utils
* @name addChainableMethod
* @api public
*/
module.exports = function addChainableMethod(ctx, name, method, chainingBehavior) {
if (typeof chainingBehavior !== 'function') {
chainingBehavior = function () { };
}
var chainableBehavior = {
method: method
, chainingBehavior: chainingBehavior
};
// save the methods so we can overwrite them later, if we need to.
if (!ctx.__methods) {
ctx.__methods = {};
}
ctx.__methods[name] = chainableBehavior;
Object.defineProperty(ctx, name,
{ get: function chainableMethodGetter() {
chainableBehavior.chainingBehavior.call(this);
var chainableMethodWrapper = function () {
// Setting the `ssfi` flag to `chainableMethodWrapper` causes this
// function to be the starting point for removing implementation
// frames from the stack trace of a failed assertion.
//
// However, we only want to use this function as the starting point if
// the `lockSsfi` flag isn't set.
//
// If the `lockSsfi` flag is set, then this assertion is being
// invoked from inside of another assertion. In this case, the `ssfi`
// flag has already been set by the outer assertion.
//
// Note that overwriting a chainable method merely replaces the saved
// methods in `ctx.__methods` instead of completely replacing the
// overwritten assertion. Therefore, an overwriting assertion won't
// set the `ssfi` or `lockSsfi` flags.
if (!flag(this, 'lockSsfi')) {
flag(this, 'ssfi', chainableMethodWrapper);
}
var result = chainableBehavior.method.apply(this, arguments);
if (result !== undefined) {
return result;
}
var newAssertion = new chai.Assertion();
transferFlags(this, newAssertion);
return newAssertion;
};
addLengthGuard(chainableMethodWrapper, name, true);
// Use `Object.setPrototypeOf` if available
if (canSetPrototype) {
// Inherit all properties from the object by replacing the `Function` prototype
var prototype = Object.create(this);
// Restore the `call` and `apply` methods from `Function`
prototype.call = call;
prototype.apply = apply;
Object.setPrototypeOf(chainableMethodWrapper, prototype);
}
// Otherwise, redefine all properties (slow!)
else {
var asserterNames = Object.getOwnPropertyNames(ctx);
asserterNames.forEach(function (asserterName) {
if (excludeNames.indexOf(asserterName) !== -1) {
return;
}
var pd = Object.getOwnPropertyDescriptor(ctx, asserterName);
Object.defineProperty(chainableMethodWrapper, asserterName, pd);
});
}
transferFlags(this, chainableMethodWrapper);
return proxify(chainableMethodWrapper);
}
, configurable: true
});
};
},{"../../chai":2,"./addLengthGuard":10,"./flag":15,"./proxify":30,"./transferFlags":32}],10:[function(require,module,exports){
var fnLengthDesc = Object.getOwnPropertyDescriptor(function () {}, 'length');
/*!
* Chai - addLengthGuard utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .addLengthGuard(fn, assertionName, isChainable)
*
* Define `length` as a getter on the given uninvoked method assertion. The
* getter acts as a guard against chaining `length` directly off of an uninvoked
* method assertion, which is a problem because it references `function`'s
* built-in `length` property instead of Chai's `length` assertion. When the
* getter catches the user making this mistake, it throws an error with a
* helpful message.
*
* There are two ways in which this mistake can be made. The first way is by
* chaining the `length` assertion directly off of an uninvoked chainable
* method. In this case, Chai suggests that the user use `lengthOf` instead. The
* second way is by chaining the `length` assertion directly off of an uninvoked
* non-chainable method. Non-chainable methods must be invoked prior to
* chaining. In this case, Chai suggests that the user consult the docs for the
* given assertion.
*
* If the `length` property of functions is unconfigurable, then return `fn`
* without modification.
*
* Note that in ES6, the function's `length` property is configurable, so once
* support for legacy environments is dropped, Chai's `length` property can
* replace the built-in function's `length` property, and this length guard will
* no longer be necessary. In the mean time, maintaining consistency across all
* environments is the priority.
*
* @param {Function} fn
* @param {String} assertionName
* @param {Boolean} isChainable
* @namespace Utils
* @name addLengthGuard
*/
module.exports = function addLengthGuard (fn, assertionName, isChainable) {
if (!fnLengthDesc.configurable) return fn;
Object.defineProperty(fn, 'length', {
get: function () {
if (isChainable) {
throw Error('Invalid Chai property: ' + assertionName + '.length. Due' +
' to a compatibility issue, "length" cannot directly follow "' +
assertionName + '". Use "' + assertionName + '.lengthOf" instead.');
}
throw Error('Invalid Chai property: ' + assertionName + '.length. See' +
' docs for proper usage of "' + assertionName + '".');
}
});
return fn;
};
},{}],11:[function(require,module,exports){
/*!
* Chai - addMethod utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
var addLengthGuard = require('./addLengthGuard');
var chai = require('../../chai');
var flag = require('./flag');
var proxify = require('./proxify');
var transferFlags = require('./transferFlags');
/**
* ### .addMethod(ctx, name, method)
*
* Adds a method to the prototype of an object.
*
* utils.addMethod(chai.Assertion.prototype, 'foo', function (str) {
* var obj = utils.flag(this, 'object');
* new chai.Assertion(obj).to.be.equal(str);
* });
*
* Can also be accessed directly from `chai.Assertion`.
*
* chai.Assertion.addMethod('foo', fn);
*
* Then can be used as any other assertion.
*
* expect(fooStr).to.be.foo('bar');
*
* @param {Object} ctx object to which the method is added
* @param {String} name of method to add
* @param {Function} method function to be used for name
* @namespace Utils
* @name addMethod
* @api public
*/
module.exports = function addMethod(ctx, name, method) {
var methodWrapper = function () {
// Setting the `ssfi` flag to `methodWrapper` causes this function to be the
// starting point for removing implementation frames from the stack trace of
// a failed assertion.
//
// However, we only want to use this function as the starting point if the
// `lockSsfi` flag isn't set.
//
// If the `lockSsfi` flag is set, then either this assertion has been
// overwritten by another assertion, or this assertion is being invoked from
// inside of another assertion. In the first case, the `ssfi` flag has
// already been set by the overwriting assertion. In the second case, the
// `ssfi` flag has already been set by the outer assertion.
if (!flag(this, 'lockSsfi')) {
flag(this, 'ssfi', methodWrapper);
}
var result = method.apply(this, arguments);
if (result !== undefined)
return result;
var newAssertion = new chai.Assertion();
transferFlags(this, newAssertion);
return newAssertion;
};
addLengthGuard(methodWrapper, name, false);
ctx[name] = proxify(methodWrapper, name);
};
},{"../../chai":2,"./addLengthGuard":10,"./flag":15,"./proxify":30,"./transferFlags":32}],12:[function(require,module,exports){
/*!
* Chai - addProperty utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
var chai = require('../../chai');
var flag = require('./flag');
var isProxyEnabled = require('./isProxyEnabled');
var transferFlags = require('./transferFlags');
/**
* ### .addProperty(ctx, name, getter)
*
* Adds a property to the prototype of an object.
*
* utils.addProperty(chai.Assertion.prototype, 'foo', function () {
* var obj = utils.flag(this, 'object');
* new chai.Assertion(obj).to.be.instanceof(Foo);
* });
*
* Can also be accessed directly from `chai.Assertion`.
*
* chai.Assertion.addProperty('foo', fn);
*
* Then can be used as any other assertion.
*
* expect(myFoo).to.be.foo;
*
* @param {Object} ctx object to which the property is added
* @param {String} name of property to add
* @param {Function} getter function to be used for name
* @namespace Utils
* @name addProperty
* @api public
*/
module.exports = function addProperty(ctx, name, getter) {
getter = getter === undefined ? function () {} : getter;
Object.defineProperty(ctx, name,
{ get: function propertyGetter() {
// Setting the `ssfi` flag to `propertyGetter` causes this function to
// be the starting point for removing implementation frames from the
// stack trace of a failed assertion.
//
// However, we only want to use this function as the starting point if
// the `lockSsfi` flag isn't set and proxy protection is disabled.
//
// If the `lockSsfi` flag is set, then either this assertion has been
// overwritten by another assertion, or this assertion is being invoked
// from inside of another assertion. In the first case, the `ssfi` flag
// has already been set by the overwriting assertion. In the second
// case, the `ssfi` flag has already been set by the outer assertion.
//
// If proxy protection is enabled, then the `ssfi` flag has already been
// set by the proxy getter.
if (!isProxyEnabled() && !flag(this, 'lockSsfi')) {
flag(this, 'ssfi', propertyGetter);
}
var result = getter.call(this);
if (result !== undefined)
return result;
var newAssertion = new chai.Assertion();
transferFlags(this, newAssertion);
return newAssertion;
}
, configurable: true
});
};
},{"../../chai":2,"./flag":15,"./isProxyEnabled":25,"./transferFlags":32}],13:[function(require,module,exports){
/*!
* Chai - compareByInspect utility
* Copyright(c) 2011-2016 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/*!
* Module dependencies
*/
var inspect = require('./inspect');
/**
* ### .compareByInspect(mixed, mixed)
*
* To be used as a compareFunction with Array.prototype.sort. Compares elements
* using inspect instead of default behavior of using toString so that Symbols
* and objects with irregular/missing toString can still be sorted without a
* TypeError.
*
* @param {Mixed} first element to compare
* @param {Mixed} second element to compare
* @returns {Number} -1 if 'a' should come before 'b'; otherwise 1
* @name compareByInspect
* @namespace Utils
* @api public
*/
module.exports = function compareByInspect(a, b) {
return inspect(a) < inspect(b) ? -1 : 1;
};
},{"./inspect":23}],14:[function(require,module,exports){
/*!
* Chai - expectTypes utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .expectTypes(obj, types)
*
* Ensures that the object being tested against is of a valid type.
*
* utils.expectTypes(this, ['array', 'object', 'string']);
*
* @param {Mixed} obj constructed Assertion
* @param {Array} type A list of allowed types for this assertion
* @namespace Utils
* @name expectTypes
* @api public
*/
var AssertionError = require('assertion-error');
var flag = require('./flag');
var type = require('type-detect');
module.exports = function expectTypes(obj, types) {
var flagMsg = flag(obj, 'message');
var ssfi = flag(obj, 'ssfi');
flagMsg = flagMsg ? flagMsg + ': ' : '';
obj = flag(obj, 'object');
types = types.map(function (t) { return t.toLowerCase(); });
types.sort();
// Transforms ['lorem', 'ipsum'] into 'a lorem, or an ipsum'
var str = types.map(function (t, index) {
var art = ~[ 'a', 'e', 'i', 'o', 'u' ].indexOf(t.charAt(0)) ? 'an' : 'a';
var or = types.length > 1 && index === types.length - 1 ? 'or ' : '';
return or + art + ' ' + t;
}).join(', ');
var objType = type(obj).toLowerCase();
if (!types.some(function (expected) { return objType === expected; })) {
throw new AssertionError(
flagMsg + 'object tested must be ' + str + ', but ' + objType + ' given',
undefined,
ssfi
);
}
};
},{"./flag":15,"assertion-error":33,"type-detect":38}],15:[function(require,module,exports){
/*!
* Chai - flag utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .flag(object, key, [value])
*
* Get or set a flag value on an object. If a
* value is provided it will be set, else it will
* return the currently set value or `undefined` if
* the value is not set.
*
* utils.flag(this, 'foo', 'bar'); // setter
* utils.flag(this, 'foo'); // getter, returns `bar`
*
* @param {Object} object constructed Assertion
* @param {String} key
* @param {Mixed} value (optional)
* @namespace Utils
* @name flag
* @api private
*/
module.exports = function flag(obj, key, value) {
var flags = obj.__flags || (obj.__flags = Object.create(null));
if (arguments.length === 3) {
flags[key] = value;
} else {
return flags[key];
}
};
},{}],16:[function(require,module,exports){
/*!
* Chai - getActual utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .getActual(object, [actual])
*
* Returns the `actual` value for an Assertion.
*
* @param {Object} object (constructed Assertion)
* @param {Arguments} chai.Assertion.prototype.assert arguments
* @namespace Utils
* @name getActual
*/
module.exports = function getActual(obj, args) {
return args.length > 4 ? args[4] : obj._obj;
};
},{}],17:[function(require,module,exports){
/*!
* Chai - getEnumerableProperties utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .getEnumerableProperties(object)
*
* This allows the retrieval of enumerable property names of an object,
* inherited or not.
*
* @param {Object} object
* @returns {Array}
* @namespace Utils
* @name getEnumerableProperties
* @api public
*/
module.exports = function getEnumerableProperties(object) {
var result = [];
for (var name in object) {
result.push(name);
}
return result;
};
},{}],18:[function(require,module,exports){
/*!
* Chai - message composition utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/*!
* Module dependencies
*/
var flag = require('./flag')
, getActual = require('./getActual')
, objDisplay = require('./objDisplay');
/**
* ### .getMessage(object, message, negateMessage)
*
* Construct the error message based on flags
* and template tags. Template tags will return
* a stringified inspection of the object referenced.
*
* Message template tags:
* - `#{this}` current asserted object
* - `#{act}` actual value
* - `#{exp}` expected value
*
* @param {Object} object (constructed Assertion)
* @param {Arguments} chai.Assertion.prototype.assert arguments
* @namespace Utils
* @name getMessage
* @api public
*/
module.exports = function getMessage(obj, args) {
var negate = flag(obj, 'negate')
, val = flag(obj, 'object')
, expected = args[3]
, actual = getActual(obj, args)
, msg = negate ? args[2] : args[1]
, flagMsg = flag(obj, 'message');
if(typeof msg === "function") msg = msg();
msg = msg || '';
msg = msg
.replace(/#\{this\}/g, function () { return objDisplay(val); })
.replace(/#\{act\}/g, function () { return objDisplay(actual); })
.replace(/#\{exp\}/g, function () { return objDisplay(expected); });
return flagMsg ? flagMsg + ': ' + msg : msg;
};
},{"./flag":15,"./getActual":16,"./objDisplay":26}],19:[function(require,module,exports){
/*!
* Chai - getOwnEnumerableProperties utility
* Copyright(c) 2011-2016 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/*!
* Module dependencies
*/
var getOwnEnumerablePropertySymbols = require('./getOwnEnumerablePropertySymbols');
/**
* ### .getOwnEnumerableProperties(object)
*
* This allows the retrieval of directly-owned enumerable property names and
* symbols of an object. This function is necessary because Object.keys only
* returns enumerable property names, not enumerable property symbols.
*
* @param {Object} object
* @returns {Array}
* @namespace Utils
* @name getOwnEnumerableProperties
* @api public
*/
module.exports = function getOwnEnumerableProperties(obj) {
return Object.keys(obj).concat(getOwnEnumerablePropertySymbols(obj));
};
},{"./getOwnEnumerablePropertySymbols":20}],20:[function(require,module,exports){
/*!
* Chai - getOwnEnumerablePropertySymbols utility
* Copyright(c) 2011-2016 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .getOwnEnumerablePropertySymbols(object)
*
* This allows the retrieval of directly-owned enumerable property symbols of an
* object. This function is necessary because Object.getOwnPropertySymbols
* returns both enumerable and non-enumerable property symbols.
*
* @param {Object} object
* @returns {Array}
* @namespace Utils
* @name getOwnEnumerablePropertySymbols
* @api public
*/
module.exports = function getOwnEnumerablePropertySymbols(obj) {
if (typeof Object.getOwnPropertySymbols !== 'function') return [];
return Object.getOwnPropertySymbols(obj).filter(function (sym) {
return Object.getOwnPropertyDescriptor(obj, sym).enumerable;
});
};
},{}],21:[function(require,module,exports){
/*!
* Chai - getProperties utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .getProperties(object)
*
* This allows the retrieval of property names of an object, enumerable or not,
* inherited or not.
*
* @param {Object} object
* @returns {Array}
* @namespace Utils
* @name getProperties
* @api public
*/
module.exports = function getProperties(object) {
var result = Object.getOwnPropertyNames(object);
function addProperty(property) {
if (result.indexOf(property) === -1) {
result.push(property);
}
}
var proto = Object.getPrototypeOf(object);
while (proto !== null) {
Object.getOwnPropertyNames(proto).forEach(addProperty);
proto = Object.getPrototypeOf(proto);
}
return result;
};
},{}],22:[function(require,module,exports){
/*!
* chai
* Copyright(c) 2011 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/*!
* Dependencies that are used for multiple exports are required here only once
*/
var pathval = require('pathval');
/*!
* test utility
*/
exports.test = require('./test');
/*!
* type utility
*/
exports.type = require('type-detect');
/*!
* expectTypes utility
*/
exports.expectTypes = require('./expectTypes');
/*!
* message utility
*/
exports.getMessage = require('./getMessage');
/*!
* actual utility
*/
exports.getActual = require('./getActual');
/*!
* Inspect util
*/
exports.inspect = require('./inspect');
/*!
* Object Display util
*/
exports.objDisplay = require('./objDisplay');
/*!
* Flag utility
*/
exports.flag = require('./flag');
/*!
* Flag transferring utility
*/
exports.transferFlags = require('./transferFlags');
/*!
* Deep equal utility
*/
exports.eql = require('deep-eql');
/*!
* Deep path info
*/
exports.getPathInfo = pathval.getPathInfo;
/*!
* Check if a property exists
*/
exports.hasProperty = pathval.hasProperty;
/*!
* Function name
*/
exports.getName = require('get-func-name');
/*!
* add Property
*/
exports.addProperty = require('./addProperty');
/*!
* add Method
*/
exports.addMethod = require('./addMethod');
/*!
* overwrite Property
*/
exports.overwriteProperty = require('./overwriteProperty');
/*!
* overwrite Method
*/
exports.overwriteMethod = require('./overwriteMethod');
/*!
* Add a chainable method
*/
exports.addChainableMethod = require('./addChainableMethod');
/*!
* Overwrite chainable method
*/
exports.overwriteChainableMethod = require('./overwriteChainableMethod');
/*!
* Compare by inspect method
*/
exports.compareByInspect = require('./compareByInspect');
/*!
* Get own enumerable property symbols method
*/
exports.getOwnEnumerablePropertySymbols = require('./getOwnEnumerablePropertySymbols');
/*!
* Get own enumerable properties method
*/
exports.getOwnEnumerableProperties = require('./getOwnEnumerableProperties');
/*!
* Checks error against a given set of criteria
*/
exports.checkError = require('check-error');
/*!
* Proxify util
*/
exports.proxify = require('./proxify');
/*!
* addLengthGuard util
*/
exports.addLengthGuard = require('./addLengthGuard');
/*!
* isProxyEnabled helper
*/
exports.isProxyEnabled = require('./isProxyEnabled');
/*!
* isNaN method
*/
exports.isNaN = require('./isNaN');
},{"./addChainableMethod":9,"./addLengthGuard":10,"./addMethod":11,"./addProperty":12,"./compareByInspect":13,"./expectTypes":14,"./flag":15,"./getActual":16,"./getMessage":18,"./getOwnEnumerableProperties":19,"./getOwnEnumerablePropertySymbols":20,"./inspect":23,"./isNaN":24,"./isProxyEnabled":25,"./objDisplay":26,"./overwriteChainableMethod":27,"./overwriteMethod":28,"./overwriteProperty":29,"./proxify":30,"./test":31,"./transferFlags":32,"check-error":34,"deep-eql":35,"get-func-name":36,"pathval":37,"type-detect":38}],23:[function(require,module,exports){
// This is (almost) directly from Node.js utils
// https://github.com/joyent/node/blob/f8c335d0caf47f16d31413f89aa28eda3878e3aa/lib/util.js
var getName = require('get-func-name');
var getProperties = require('./getProperties');
var getEnumerableProperties = require('./getEnumerableProperties');
var config = require('../config');
module.exports = inspect;
/**
* ### .inspect(obj, [showHidden], [depth], [colors])
*
* Echoes the value of a value. Tries to print the value out
* in the best way possible given the different types.
*
* @param {Object} obj The object to print out.
* @param {Boolean} showHidden Flag that shows hidden (not enumerable)
* properties of objects. Default is false.
* @param {Number} depth Depth in which to descend in object. Default is 2.
* @param {Boolean} colors Flag to turn on ANSI escape codes to color the
* output. Default is false (no coloring).
* @namespace Utils
* @name inspect
*/
function inspect(obj, showHidden, depth, colors) {
var ctx = {
showHidden: showHidden,
seen: [],
stylize: function (str) { return str; }
};
return formatValue(ctx, obj, (typeof depth === 'undefined' ? 2 : depth));
}
// Returns true if object is a DOM element.
var isDOMElement = function (object) {
if (typeof HTMLElement === 'object') {
return object instanceof HTMLElement;
} else {
return object &&
typeof object === 'object' &&
'nodeType' in object &&
object.nodeType === 1 &&
typeof object.nodeName === 'string';
}
};
function formatValue(ctx, value, recurseTimes) {
// Provide a hook for user-specified inspect functions.
// Check that value is an object with an inspect function on it
if (value && typeof value.inspect === 'function' &&
// Filter out the util module, it's inspect function is special
value.inspect !== exports.inspect &&
// Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
var ret = value.inspect(recurseTimes, ctx);
if (typeof ret !== 'string') {
ret = formatValue(ctx, ret, recurseTimes);
}
return ret;
}
// Primitive types cannot have properties
var primitive = formatPrimitive(ctx, value);
if (primitive) {
return primitive;
}
// If this is a DOM element, try to get the outer HTML.
if (isDOMElement(value)) {
if ('outerHTML' in value) {
return value.outerHTML;
// This value does not have an outerHTML attribute,
// it could still be an XML element
} else {
// Attempt to serialize it
try {
if (document.xmlVersion) {
var xmlSerializer = new XMLSerializer();
return xmlSerializer.serializeToString(value);
} else {
// Firefox 11- do not support outerHTML
// It does, however, support innerHTML
// Use the following to render the element
var ns = "http://www.w3.org/1999/xhtml";
var container = document.createElementNS(ns, '_');
container.appendChild(value.cloneNode(false));
var html = container.innerHTML
.replace('><', '>' + value.innerHTML + '<');
container.innerHTML = '';
return html;
}
} catch (err) {
// This could be a non-native DOM implementation,
// continue with the normal flow:
// printing the element as if it is an object.
}
}
}
// Look up the keys of the object.
var visibleKeys = getEnumerableProperties(value);
var keys = ctx.showHidden ? getProperties(value) : visibleKeys;
var name, nameSuffix;
// Some type of object without properties can be shortcut.
// In IE, errors have a single `stack` property, or if they are vanilla `Error`,
// a `stack` plus `description` property; ignore those for consistency.
if (keys.length === 0 || (isError(value) && (
(keys.length === 1 && keys[0] === 'stack') ||
(keys.length === 2 && keys[0] === 'description' && keys[1] === 'stack')
))) {
if (typeof value === 'function') {
name = getName(value);
nameSuffix = name ? ': ' + name : '';
return ctx.stylize('[Function' + nameSuffix + ']', 'special');
}
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
}
if (isDate(value)) {
return ctx.stylize(Date.prototype.toUTCString.call(value), 'date');
}
if (isError(value)) {
return formatError(value);
}
}
var base = ''
, array = false
, typedArray = false
, braces = ['{', '}'];
if (isTypedArray(value)) {
typedArray = true;
braces = ['[', ']'];
}
// Make Array say that they are Array
if (isArray(value)) {
array = true;
braces = ['[', ']'];
}
// Make functions say that they are functions
if (typeof value === 'function') {
name = getName(value);
nameSuffix = name ? ': ' + name : '';
base = ' [Function' + nameSuffix + ']';
}
// Make RegExps say that they are RegExps
if (isRegExp(value)) {
base = ' ' + RegExp.prototype.toString.call(value);
}
// Make dates with properties first say the date
if (isDate(value)) {
base = ' ' + Date.prototype.toUTCString.call(value);
}
// Make error with message first say the error
if (isError(value)) {
return formatError(value);
}
if (keys.length === 0 && (!array || value.length == 0)) {
return braces[0] + base + braces[1];
}
if (recurseTimes < 0) {
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
} else {
return ctx.stylize('[Object]', 'special');
}
}
ctx.seen.push(value);
var output;
if (array) {
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
} else if (typedArray) {
return formatTypedArray(value);
} else {
output = keys.map(function(key) {
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
});
}
ctx.seen.pop();
return reduceToSingleString(output, base, braces);
}
function formatPrimitive(ctx, value) {
switch (typeof value) {
case 'undefined':
return ctx.stylize('undefined', 'undefined');
case 'string':
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
.replace(/'/g, "\\'")
.replace(/\\"/g, '"') + '\'';
return ctx.stylize(simple, 'string');
case 'number':
if (value === 0 && (1/value) === -Infinity) {
return ctx.stylize('-0', 'number');
}
return ctx.stylize('' + value, 'number');
case 'boolean':
return ctx.stylize('' + value, 'boolean');
case 'symbol':
return ctx.stylize(value.toString(), 'symbol');
}
// For some reason typeof null is "object", so special case here.
if (value === null) {
return ctx.stylize('null', 'null');
}
}
function formatError(value) {
return '[' + Error.prototype.toString.call(value) + ']';
}
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
for (var i = 0, l = value.length; i < l; ++i) {
if (Object.prototype.hasOwnProperty.call(value, String(i))) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
String(i), true));
} else {
output.push('');
}
}
keys.forEach(function(key) {
if (!key.match(/^\d+$/)) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, true));
}
});
return output;
}
function formatTypedArray(value) {
var str = '[ ';
for (var i = 0; i < value.length; ++i) {
if (str.length >= config.truncateThreshold - 7) {
str += '...';
break;
}
str += value[i] + ', ';
}
str += ' ]';
// Removing trailing `, ` if the array was not truncated
if (str.indexOf(', ]') !== -1) {
str = str.replace(', ]', ' ]');
}
return str;
}
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
var name;
var propDescriptor = Object.getOwnPropertyDescriptor(value, key);
var str;
if (propDescriptor) {
if (propDescriptor.get) {
if (propDescriptor.set) {
str = ctx.stylize('[Getter/Setter]', 'special');
} else {
str = ctx.stylize('[Getter]', 'special');
}
} else {
if (propDescriptor.set) {
str = ctx.stylize('[Setter]', 'special');
}
}
}
if (visibleKeys.indexOf(key) < 0) {
name = '[' + key + ']';
}
if (!str) {
if (ctx.seen.indexOf(value[key]) < 0) {
if (recurseTimes === null) {
str = formatValue(ctx, value[key], null);
} else {
str = formatValue(ctx, value[key], recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (array) {
str = str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n').substr(2);
} else {
str = '\n' + str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n');
}
}
} else {
str = ctx.stylize('[Circular]', 'special');
}
}
if (typeof name === 'undefined') {
if (array && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
name = name.substr(1, name.length - 2);
name = ctx.stylize(name, 'name');
} else {
name = name.replace(/'/g, "\\'")
.replace(/\\"/g, '"')
.replace(/(^"|"$)/g, "'");
name = ctx.stylize(name, 'string');
}
}
return name + ': ' + str;
}
function reduceToSingleString(output, base, braces) {
var length = output.reduce(function(prev, cur) {
return prev + cur.length + 1;
}, 0);
if (length > 60) {
return braces[0] +
(base === '' ? '' : base + '\n ') +
' ' +
output.join(',\n ') +
' ' +
braces[1];
}
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}
function isTypedArray(ar) {
// Unfortunately there's no way to check if an object is a TypedArray
// We have to check if it's one of these types
return (typeof ar === 'object' && /\w+Array]$/.test(objectToString(ar)));
}
function isArray(ar) {
return Array.isArray(ar) ||
(typeof ar === 'object' && objectToString(ar) === '[object Array]');
}
function isRegExp(re) {
return typeof re === 'object' && objectToString(re) === '[object RegExp]';
}
function isDate(d) {
return typeof d === 'object' && objectToString(d) === '[object Date]';
}
function isError(e) {
return typeof e === 'object' && objectToString(e) === '[object Error]';
}
function objectToString(o) {
return Object.prototype.toString.call(o);
}
},{"../config":4,"./getEnumerableProperties":17,"./getProperties":21,"get-func-name":36}],24:[function(require,module,exports){
/*!
* Chai - isNaN utility
* Copyright(c) 2012-2015 Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
* MIT Licensed
*/
/**
* ### .isNaN(value)
*
* Checks if the given value is NaN or not.
*
* utils.isNaN(NaN); // true
*
* @param {Value} The value which has to be checked if it is NaN
* @name isNaN
* @api private
*/
function isNaN(value) {
// Refer http://www.ecma-international.org/ecma-262/6.0/#sec-isnan-number
// section's NOTE.
return value !== value;
}
// If ECMAScript 6's Number.isNaN is present, prefer that.
module.exports = Number.isNaN || isNaN;
},{}],25:[function(require,module,exports){
var config = require('../config');
/*!
* Chai - isProxyEnabled helper
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .isProxyEnabled()
*
* Helper function to check if Chai's proxy protection feature is enabled. If
* proxies are unsupported or disabled via the user's Chai config, then return
* false. Otherwise, return true.
*
* @namespace Utils
* @name isProxyEnabled
*/
module.exports = function isProxyEnabled() {
return config.useProxy &&
typeof Proxy !== 'undefined' &&
typeof Reflect !== 'undefined';
};
},{"../config":4}],26:[function(require,module,exports){
/*!
* Chai - flag utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/*!
* Module dependencies
*/
var inspect = require('./inspect');
var config = require('../config');
/**
* ### .objDisplay(object)
*
* Determines if an object or an array matches
* criteria to be inspected in-line for error
* messages or should be truncated.
*
* @param {Mixed} javascript object to inspect
* @name objDisplay
* @namespace Utils
* @api public
*/
module.exports = function objDisplay(obj) {
var str = inspect(obj)
, type = Object.prototype.toString.call(obj);
if (config.truncateThreshold && str.length >= config.truncateThreshold) {
if (type === '[object Function]') {
return !obj.name || obj.name === ''
? '[Function]'
: '[Function: ' + obj.name + ']';
} else if (type === '[object Array]') {
return '[ Array(' + obj.length + ') ]';
} else if (type === '[object Object]') {
var keys = Object.keys(obj)
, kstr = keys.length > 2
? keys.splice(0, 2).join(', ') + ', ...'
: keys.join(', ');
return '{ Object (' + kstr + ') }';
} else {
return str;
}
} else {
return str;
}
};
},{"../config":4,"./inspect":23}],27:[function(require,module,exports){
/*!
* Chai - overwriteChainableMethod utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
var chai = require('../../chai');
var transferFlags = require('./transferFlags');
/**
* ### .overwriteChainableMethod(ctx, name, method, chainingBehavior)
*
* Overwrites an already existing chainable method
* and provides access to the previous function or
* property. Must return functions to be used for
* name.
*
* utils.overwriteChainableMethod(chai.Assertion.prototype, 'lengthOf',
* function (_super) {
* }
* , function (_super) {
* }
* );
*
* Can also be accessed directly from `chai.Assertion`.
*
* chai.Assertion.overwriteChainableMethod('foo', fn, fn);
*
* Then can be used as any other assertion.
*
* expect(myFoo).to.have.lengthOf(3);
* expect(myFoo).to.have.lengthOf.above(3);
*
* @param {Object} ctx object whose method / property is to be overwritten
* @param {String} name of method / property to overwrite
* @param {Function} method function that returns a function to be used for name
* @param {Function} chainingBehavior function that returns a function to be used for property
* @namespace Utils
* @name overwriteChainableMethod
* @api public
*/
module.exports = function overwriteChainableMethod(ctx, name, method, chainingBehavior) {
var chainableBehavior = ctx.__methods[name];
var _chainingBehavior = chainableBehavior.chainingBehavior;
chainableBehavior.chainingBehavior = function overwritingChainableMethodGetter() {
var result = chainingBehavior(_chainingBehavior).call(this);
if (result !== undefined) {
return result;
}
var newAssertion = new chai.Assertion();
transferFlags(this, newAssertion);
return newAssertion;
};
var _method = chainableBehavior.method;
chainableBehavior.method = function overwritingChainableMethodWrapper() {
var result = method(_method).apply(this, arguments);
if (result !== undefined) {
return result;
}
var newAssertion = new chai.Assertion();
transferFlags(this, newAssertion);
return newAssertion;
};
};
},{"../../chai":2,"./transferFlags":32}],28:[function(require,module,exports){
/*!
* Chai - overwriteMethod utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
var addLengthGuard = require('./addLengthGuard');
var chai = require('../../chai');
var flag = require('./flag');
var proxify = require('./proxify');
var transferFlags = require('./transferFlags');
/**
* ### .overwriteMethod(ctx, name, fn)
*
* Overwrites an already existing method and provides
* access to previous function. Must return function
* to be used for name.
*
* utils.overwriteMethod(chai.Assertion.prototype, 'equal', function (_super) {
* return function (str) {
* var obj = utils.flag(this, 'object');
* if (obj instanceof Foo) {
* new chai.Assertion(obj.value).to.equal(str);
* } else {
* _super.apply(this, arguments);
* }
* }
* });
*
* Can also be accessed directly from `chai.Assertion`.
*
* chai.Assertion.overwriteMethod('foo', fn);
*
* Then can be used as any other assertion.
*
* expect(myFoo).to.equal('bar');
*
* @param {Object} ctx object whose method is to be overwritten
* @param {String} name of method to overwrite
* @param {Function} method function that returns a function to be used for name
* @namespace Utils
* @name overwriteMethod
* @api public
*/
module.exports = function overwriteMethod(ctx, name, method) {
var _method = ctx[name]
, _super = function () {
throw new Error(name + ' is not a function');
};
if (_method && 'function' === typeof _method)
_super = _method;
var overwritingMethodWrapper = function () {
// Setting the `ssfi` flag to `overwritingMethodWrapper` causes this
// function to be the starting point for removing implementation frames from
// the stack trace of a failed assertion.
//
// However, we only want to use this function as the starting point if the
// `lockSsfi` flag isn't set.
//
// If the `lockSsfi` flag is set, then either this assertion has been
// overwritten by another assertion, or this assertion is being invoked from
// inside of another assertion. In the first case, the `ssfi` flag has
// already been set by the overwriting assertion. In the second case, the
// `ssfi` flag has already been set by the outer assertion.
if (!flag(this, 'lockSsfi')) {
flag(this, 'ssfi', overwritingMethodWrapper);
}
// Setting the `lockSsfi` flag to `true` prevents the overwritten assertion
// from changing the `ssfi` flag. By this point, the `ssfi` flag is already
// set to the correct starting point for this assertion.
var origLockSsfi = flag(this, 'lockSsfi');
flag(this, 'lockSsfi', true);
var result = method(_super).apply(this, arguments);
flag(this, 'lockSsfi', origLockSsfi);
if (result !== undefined) {
return result;
}
var newAssertion = new chai.Assertion();
transferFlags(this, newAssertion);
return newAssertion;
}
addLengthGuard(overwritingMethodWrapper, name, false);
ctx[name] = proxify(overwritingMethodWrapper, name);
};
},{"../../chai":2,"./addLengthGuard":10,"./flag":15,"./proxify":30,"./transferFlags":32}],29:[function(require,module,exports){
/*!
* Chai - overwriteProperty utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
var chai = require('../../chai');
var flag = require('./flag');
var isProxyEnabled = require('./isProxyEnabled');
var transferFlags = require('./transferFlags');
/**
* ### .overwriteProperty(ctx, name, fn)
*
* Overwrites an already existing property getter and provides
* access to previous value. Must return function to use as getter.
*
* utils.overwriteProperty(chai.Assertion.prototype, 'ok', function (_super) {
* return function () {
* var obj = utils.flag(this, 'object');
* if (obj instanceof Foo) {
* new chai.Assertion(obj.name).to.equal('bar');
* } else {
* _super.call(this);
* }
* }
* });
*
*
* Can also be accessed directly from `chai.Assertion`.
*
* chai.Assertion.overwriteProperty('foo', fn);
*
* Then can be used as any other assertion.
*
* expect(myFoo).to.be.ok;
*
* @param {Object} ctx object whose property is to be overwritten
* @param {String} name of property to overwrite
* @param {Function} getter function that returns a getter function to be used for name
* @namespace Utils
* @name overwriteProperty
* @api public
*/
module.exports = function overwriteProperty(ctx, name, getter) {
var _get = Object.getOwnPropertyDescriptor(ctx, name)
, _super = function () {};
if (_get && 'function' === typeof _get.get)
_super = _get.get
Object.defineProperty(ctx, name,
{ get: function overwritingPropertyGetter() {
// Setting the `ssfi` flag to `overwritingPropertyGetter` causes this
// function to be the starting point for removing implementation frames
// from the stack trace of a failed assertion.
//
// However, we only want to use this function as the starting point if
// the `lockSsfi` flag isn't set and proxy protection is disabled.
//
// If the `lockSsfi` flag is set, then either this assertion has been
// overwritten by another assertion, or this assertion is being invoked
// from inside of another assertion. In the first case, the `ssfi` flag
// has already been set by the overwriting assertion. In the second
// case, the `ssfi` flag has already been set by the outer assertion.
//
// If proxy protection is enabled, then the `ssfi` flag has already been
// set by the proxy getter.
if (!isProxyEnabled() && !flag(this, 'lockSsfi')) {
flag(this, 'ssfi', overwritingPropertyGetter);
}
// Setting the `lockSsfi` flag to `true` prevents the overwritten
// assertion from changing the `ssfi` flag. By this point, the `ssfi`
// flag is already set to the correct starting point for this assertion.
var origLockSsfi = flag(this, 'lockSsfi');
flag(this, 'lockSsfi', true);
var result = getter(_super).call(this);
flag(this, 'lockSsfi', origLockSsfi);
if (result !== undefined) {
return result;
}
var newAssertion = new chai.Assertion();
transferFlags(this, newAssertion);
return newAssertion;
}
, configurable: true
});
};
},{"../../chai":2,"./flag":15,"./isProxyEnabled":25,"./transferFlags":32}],30:[function(require,module,exports){
var config = require('../config');
var flag = require('./flag');
var getProperties = require('./getProperties');
var isProxyEnabled = require('./isProxyEnabled');
/*!
* Chai - proxify utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .proxify(object)
*
* Return a proxy of given object that throws an error when a non-existent
* property is read. By default, the root cause is assumed to be a misspelled
* property, and thus an attempt is made to offer a reasonable suggestion from
* the list of existing properties. However, if a nonChainableMethodName is
* provided, then the root cause is instead a failure to invoke a non-chainable
* method prior to reading the non-existent property.
*
* If proxies are unsupported or disabled via the user's Chai config, then
* return object without modification.
*
* @param {Object} obj
* @param {String} nonChainableMethodName
* @namespace Utils
* @name proxify
*/
var builtins = ['__flags', '__methods', '_obj', 'assert'];
module.exports = function proxify(obj, nonChainableMethodName) {
if (!isProxyEnabled()) return obj;
return new Proxy(obj, {
get: function proxyGetter(target, property) {
// This check is here because we should not throw errors on Symbol properties
// such as `Symbol.toStringTag`.
// The values for which an error should be thrown can be configured using
// the `config.proxyExcludedKeys` setting.
if (typeof property === 'string' &&
config.proxyExcludedKeys.indexOf(property) === -1 &&
!Reflect.has(target, property)) {
// Special message for invalid property access of non-chainable methods.
if (nonChainableMethodName) {
throw Error('Invalid Chai property: ' + nonChainableMethodName + '.' +
property + '. See docs for proper usage of "' +
nonChainableMethodName + '".');
}
// If the property is reasonably close to an existing Chai property,
// suggest that property to the user. Only suggest properties with a
// distance less than 4.
var suggestion = null;
var suggestionDistance = 4;
getProperties(target).forEach(function(prop) {
if (
!Object.prototype.hasOwnProperty(prop) &&
builtins.indexOf(prop) === -1
) {
var dist = stringDistanceCapped(
property,
prop,
suggestionDistance
);
if (dist < suggestionDistance) {
suggestion = prop;
suggestionDistance = dist;
}
}
});
if (suggestion !== null) {
throw Error('Invalid Chai property: ' + property +
'. Did you mean "' + suggestion + '"?');
} else {
throw Error('Invalid Chai property: ' + property);
}
}
// Use this proxy getter as the starting point for removing implementation
// frames from the stack trace of a failed assertion. For property
// assertions, this prevents the proxy getter from showing up in the stack
// trace since it's invoked before the property getter. For method and
// chainable method assertions, this flag will end up getting changed to
// the method wrapper, which is good since this frame will no longer be in
// the stack once the method is invoked. Note that Chai builtin assertion
// properties such as `__flags` are skipped since this is only meant to
// capture the starting point of an assertion. This step is also skipped
// if the `lockSsfi` flag is set, thus indicating that this assertion is
// being called from within another assertion. In that case, the `ssfi`
// flag is already set to the outer assertion's starting point.
if (builtins.indexOf(property) === -1 && !flag(target, 'lockSsfi')) {
flag(target, 'ssfi', proxyGetter);
}
return Reflect.get(target, property);
}
});
};
/**
* # stringDistanceCapped(strA, strB, cap)
* Return the Levenshtein distance between two strings, but no more than cap.
* @param {string} strA
* @param {string} strB
* @param {number} number
* @return {number} min(string distance between strA and strB, cap)
* @api private
*/
function stringDistanceCapped(strA, strB, cap) {
if (Math.abs(strA.length - strB.length) >= cap) {
return cap;
}
var memo = [];
// `memo` is a two-dimensional array containing distances.
// memo[i][j] is the distance between strA.slice(0, i) and
// strB.slice(0, j).
for (var i = 0; i <= strA.length; i++) {
memo[i] = Array(strB.length + 1).fill(0);
memo[i][0] = i;
}
for (var j = 0; j < strB.length; j++) {
memo[0][j] = j;
}
for (var i = 1; i <= strA.length; i++) {
var ch = strA.charCodeAt(i - 1);
for (var j = 1; j <= strB.length; j++) {
if (Math.abs(i - j) >= cap) {
memo[i][j] = cap;
continue;
}
memo[i][j] = Math.min(
memo[i - 1][j] + 1,
memo[i][j - 1] + 1,
memo[i - 1][j - 1] +
(ch === strB.charCodeAt(j - 1) ? 0 : 1)
);
}
}
return memo[strA.length][strB.length];
}
},{"../config":4,"./flag":15,"./getProperties":21,"./isProxyEnabled":25}],31:[function(require,module,exports){
/*!
* Chai - test utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/*!
* Module dependencies
*/
var flag = require('./flag');
/**
* ### .test(object, expression)
*
* Test and object for expression.
*
* @param {Object} object (constructed Assertion)
* @param {Arguments} chai.Assertion.prototype.assert arguments
* @namespace Utils
* @name test
*/
module.exports = function test(obj, args) {
var negate = flag(obj, 'negate')
, expr = args[0];
return negate ? !expr : expr;
};
},{"./flag":15}],32:[function(require,module,exports){
/*!
* Chai - transferFlags utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .transferFlags(assertion, object, includeAll = true)
*
* Transfer all the flags for `assertion` to `object`. If
* `includeAll` is set to `false`, then the base Chai
* assertion flags (namely `object`, `ssfi`, `lockSsfi`,
* and `message`) will not be transferred.
*
*
* var newAssertion = new Assertion();
* utils.transferFlags(assertion, newAssertion);
*
* var anotherAssertion = new Assertion(myObj);
* utils.transferFlags(assertion, anotherAssertion, false);
*
* @param {Assertion} assertion the assertion to transfer the flags from
* @param {Object} object the object to transfer the flags to; usually a new assertion
* @param {Boolean} includeAll
* @namespace Utils
* @name transferFlags
* @api private
*/
module.exports = function transferFlags(assertion, object, includeAll) {
var flags = assertion.__flags || (assertion.__flags = Object.create(null));
if (!object.__flags) {
object.__flags = Object.create(null);
}
includeAll = arguments.length === 3 ? includeAll : true;
for (var flag in flags) {
if (includeAll ||
(flag !== 'object' && flag !== 'ssfi' && flag !== 'lockSsfi' && flag != 'message')) {
object.__flags[flag] = flags[flag];
}
}
};
},{}],33:[function(require,module,exports){
/*!
* assertion-error
* Copyright(c) 2013 Jake Luer <jake@qualiancy.com>
* MIT Licensed
*/
/*!
* Return a function that will copy properties from
* one object to another excluding any originally
* listed. Returned function will create a new `{}`.
*
* @param {String} excluded properties ...
* @return {Function}
*/
function exclude () {
var excludes = [].slice.call(arguments);
function excludeProps (res, obj) {
Object.keys(obj).forEach(function (key) {
if (!~excludes.indexOf(key)) res[key] = obj[key];
});
}
return function extendExclude () {
var args = [].slice.call(arguments)
, i = 0
, res = {};
for (; i < args.length; i++) {
excludeProps(res, args[i]);
}
return res;
};
};
/*!
* Primary Exports
*/
module.exports = AssertionError;
/**
* ### AssertionError
*
* An extension of the JavaScript `Error` constructor for
* assertion and validation scenarios.
*
* @param {String} message
* @param {Object} properties to include (optional)
* @param {callee} start stack function (optional)
*/
function AssertionError (message, _props, ssf) {
var extend = exclude('name', 'message', 'stack', 'constructor', 'toJSON')
, props = extend(_props || {});
// default values
this.message = message || 'Unspecified AssertionError';
this.showDiff = false;
// copy from properties
for (var key in props) {
this[key] = props[key];
}
// capture stack trace
ssf = ssf || AssertionError;
if (Error.captureStackTrace) {
Error.captureStackTrace(this, ssf);
} else {
try {
throw new Error();
} catch(e) {
this.stack = e.stack;
}
}
}
/*!
* Inherit from Error.prototype
*/
AssertionError.prototype = Object.create(Error.prototype);
/*!
* Statically set name
*/
AssertionError.prototype.name = 'AssertionError';
/*!
* Ensure correct constructor
*/
AssertionError.prototype.constructor = AssertionError;
/**
* Allow errors to be converted to JSON for static transfer.
*
* @param {Boolean} include stack (default: `true`)
* @return {Object} object that can be `JSON.stringify`
*/
AssertionError.prototype.toJSON = function (stack) {
var extend = exclude('constructor', 'toJSON', 'stack')
, props = extend({ name: this.name }, this);
// include stack if exists and not turned off
if (false !== stack && this.stack) {
props.stack = this.stack;
}
return props;
};
},{}],34:[function(require,module,exports){
'use strict';
/* !
* Chai - checkError utility
* Copyright(c) 2012-2016 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .checkError
*
* Checks that an error conforms to a given set of criteria and/or retrieves information about it.
*
* @api public
*/
/**
* ### .compatibleInstance(thrown, errorLike)
*
* Checks if two instances are compatible (strict equal).
* Returns false if errorLike is not an instance of Error, because instances
* can only be compatible if they're both error instances.
*
* @name compatibleInstance
* @param {Error} thrown error
* @param {Error|ErrorConstructor} errorLike object to compare against
* @namespace Utils
* @api public
*/
function compatibleInstance(thrown, errorLike) {
return errorLike instanceof Error && thrown === errorLike;
}
/**
* ### .compatibleConstructor(thrown, errorLike)
*
* Checks if two constructors are compatible.
* This function can receive either an error constructor or
* an error instance as the `errorLike` argument.
* Constructors are compatible if they're the same or if one is
* an instance of another.
*
* @name compatibleConstructor
* @param {Error} thrown error
* @param {Error|ErrorConstructor} errorLike object to compare against
* @namespace Utils
* @api public
*/
function compatibleConstructor(thrown, errorLike) {
if (errorLike instanceof Error) {
// If `errorLike` is an instance of any error we compare their constructors
return thrown.constructor === errorLike.constructor || thrown instanceof errorLike.constructor;
} else if (errorLike.prototype instanceof Error || errorLike === Error) {
// If `errorLike` is a constructor that inherits from Error, we compare `thrown` to `errorLike` directly
return thrown.constructor === errorLike || thrown instanceof errorLike;
}
return false;
}
/**
* ### .compatibleMessage(thrown, errMatcher)
*
* Checks if an error's message is compatible with a matcher (String or RegExp).
* If the message contains the String or passes the RegExp test,
* it is considered compatible.
*
* @name compatibleMessage
* @param {Error} thrown error
* @param {String|RegExp} errMatcher to look for into the message
* @namespace Utils
* @api public
*/
function compatibleMessage(thrown, errMatcher) {
var comparisonString = typeof thrown === 'string' ? thrown : thrown.message;
if (errMatcher instanceof RegExp) {
return errMatcher.test(comparisonString);
} else if (typeof errMatcher === 'string') {
return comparisonString.indexOf(errMatcher) !== -1; // eslint-disable-line no-magic-numbers
}
return false;
}
/**
* ### .getFunctionName(constructorFn)
*
* Returns the name of a function.
* This also includes a polyfill function if `constructorFn.name` is not defined.
*
* @name getFunctionName
* @param {Function} constructorFn
* @namespace Utils
* @api private
*/
var functionNameMatch = /\s*function(?:\s|\s*\/\*[^(?:*\/)]+\*\/\s*)*([^\(\/]+)/;
function getFunctionName(constructorFn) {
var name = '';
if (typeof constructorFn.name === 'undefined') {
// Here we run a polyfill if constructorFn.name is not defined
var match = String(constructorFn).match(functionNameMatch);
if (match) {
name = match[1];
}
} else {
name = constructorFn.name;
}
return name;
}
/**
* ### .getConstructorName(errorLike)
*
* Gets the constructor name for an Error instance or constructor itself.
*
* @name getConstructorName
* @param {Error|ErrorConstructor} errorLike
* @namespace Utils
* @api public
*/
function getConstructorName(errorLike) {
var constructorName = errorLike;
if (errorLike instanceof Error) {
constructorName = getFunctionName(errorLike.constructor);
} else if (typeof errorLike === 'function') {
// If `err` is not an instance of Error it is an error constructor itself or another function.
// If we've got a common function we get its name, otherwise we may need to create a new instance
// of the error just in case it's a poorly-constructed error. Please see chaijs/chai/issues/45 to know more.
constructorName = getFunctionName(errorLike).trim() ||
getFunctionName(new errorLike()); // eslint-disable-line new-cap
}
return constructorName;
}
/**
* ### .getMessage(errorLike)
*
* Gets the error message from an error.
* If `err` is a String itself, we return it.
* If the error has no message, we return an empty string.
*
* @name getMessage
* @param {Error|String} errorLike
* @namespace Utils
* @api public
*/
function getMessage(errorLike) {
var msg = '';
if (errorLike && errorLike.message) {
msg = errorLike.message;
} else if (typeof errorLike === 'string') {
msg = errorLike;
}
return msg;
}
module.exports = {
compatibleInstance: compatibleInstance,
compatibleConstructor: compatibleConstructor,
compatibleMessage: compatibleMessage,
getMessage: getMessage,
getConstructorName: getConstructorName,
};
},{}],35:[function(require,module,exports){
'use strict';
/* globals Symbol: false, Uint8Array: false, WeakMap: false */
/*!
* deep-eql
* Copyright(c) 2013 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
var type = require('type-detect');
function FakeMap() {
this._key = 'chai/deep-eql__' + Math.random() + Date.now();
}
FakeMap.prototype = {
get: function getMap(key) {
return key[this._key];
},
set: function setMap(key, value) {
if (Object.isExtensible(key)) {
Object.defineProperty(key, this._key, {
value: value,
configurable: true,
});
}
},
};
var MemoizeMap = typeof WeakMap === 'function' ? WeakMap : FakeMap;
/*!
* Check to see if the MemoizeMap has recorded a result of the two operands
*
* @param {Mixed} leftHandOperand
* @param {Mixed} rightHandOperand
* @param {MemoizeMap} memoizeMap
* @returns {Boolean|null} result
*/
function memoizeCompare(leftHandOperand, rightHandOperand, memoizeMap) {
// Technically, WeakMap keys can *only* be objects, not primitives.
if (!memoizeMap || isPrimitive(leftHandOperand) || isPrimitive(rightHandOperand)) {
return null;
}
var leftHandMap = memoizeMap.get(leftHandOperand);
if (leftHandMap) {
var result = leftHandMap.get(rightHandOperand);
if (typeof result === 'boolean') {
return result;
}
}
return null;
}
/*!
* Set the result of the equality into the MemoizeMap
*
* @param {Mixed} leftHandOperand
* @param {Mixed} rightHandOperand
* @param {MemoizeMap} memoizeMap
* @param {Boolean} result
*/
function memoizeSet(leftHandOperand, rightHandOperand, memoizeMap, result) {
// Technically, WeakMap keys can *only* be objects, not primitives.
if (!memoizeMap || isPrimitive(leftHandOperand) || isPrimitive(rightHandOperand)) {
return;
}
var leftHandMap = memoizeMap.get(leftHandOperand);
if (leftHandMap) {
leftHandMap.set(rightHandOperand, result);
} else {
leftHandMap = new MemoizeMap();
leftHandMap.set(rightHandOperand, result);
memoizeMap.set(leftHandOperand, leftHandMap);
}
}
/*!
* Primary Export
*/
module.exports = deepEqual;
module.exports.MemoizeMap = MemoizeMap;
/**
* Assert deeply nested sameValue equality between two objects of any type.
*
* @param {Mixed} leftHandOperand
* @param {Mixed} rightHandOperand
* @param {Object} [options] (optional) Additional options
* @param {Array} [options.comparator] (optional) Override default algorithm, determining custom equality.
* @param {Array} [options.memoize] (optional) Provide a custom memoization object which will cache the results of
complex objects for a speed boost. By passing `false` you can disable memoization, but this will cause circular
references to blow the stack.
* @return {Boolean} equal match
*/
function deepEqual(leftHandOperand, rightHandOperand, options) {
// If we have a comparator, we can't assume anything; so bail to its check first.
if (options && options.comparator) {
return extensiveDeepEqual(leftHandOperand, rightHandOperand, options);
}
var simpleResult = simpleEqual(leftHandOperand, rightHandOperand);
if (simpleResult !== null) {
return simpleResult;
}
// Deeper comparisons are pushed through to a larger function
return extensiveDeepEqual(leftHandOperand, rightHandOperand, options);
}
/**
* Many comparisons can be canceled out early via simple equality or primitive checks.
* @param {Mixed} leftHandOperand
* @param {Mixed} rightHandOperand
* @return {Boolean|null} equal match
*/
function simpleEqual(leftHandOperand, rightHandOperand) {
// Equal references (except for Numbers) can be returned early
if (leftHandOperand === rightHandOperand) {
// Handle +-0 cases
return leftHandOperand !== 0 || 1 / leftHandOperand === 1 / rightHandOperand;
}
// handle NaN cases
if (
leftHandOperand !== leftHandOperand && // eslint-disable-line no-self-compare
rightHandOperand !== rightHandOperand // eslint-disable-line no-self-compare
) {
return true;
}
// Anything that is not an 'object', i.e. symbols, functions, booleans, numbers,
// strings, and undefined, can be compared by reference.
if (isPrimitive(leftHandOperand) || isPrimitive(rightHandOperand)) {
// Easy out b/c it would have passed the first equality check
return false;
}
return null;
}
/*!
* The main logic of the `deepEqual` function.
*
* @param {Mixed} leftHandOperand
* @param {Mixed} rightHandOperand
* @param {Object} [options] (optional) Additional options
* @param {Array} [options.comparator] (optional) Override default algorithm, determining custom equality.
* @param {Array} [options.memoize] (optional) Provide a custom memoization object which will cache the results of
complex objects for a speed boost. By passing `false` you can disable memoization, but this will cause circular
references to blow the stack.
* @return {Boolean} equal match
*/
function extensiveDeepEqual(leftHandOperand, rightHandOperand, options) {
options = options || {};
options.memoize = options.memoize === false ? false : options.memoize || new MemoizeMap();
var comparator = options && options.comparator;
// Check if a memoized result exists.
var memoizeResultLeft = memoizeCompare(leftHandOperand, rightHandOperand, options.memoize);
if (memoizeResultLeft !== null) {
return memoizeResultLeft;
}
var memoizeResultRight = memoizeCompare(rightHandOperand, leftHandOperand, options.memoize);
if (memoizeResultRight !== null) {
return memoizeResultRight;
}
// If a comparator is present, use it.
if (comparator) {
var comparatorResult = comparator(leftHandOperand, rightHandOperand);
// Comparators may return null, in which case we want to go back to default behavior.
if (comparatorResult === false || comparatorResult === true) {
memoizeSet(leftHandOperand, rightHandOperand, options.memoize, comparatorResult);
return comparatorResult;
}
// To allow comparators to override *any* behavior, we ran them first. Since it didn't decide
// what to do, we need to make sure to return the basic tests first before we move on.
var simpleResult = simpleEqual(leftHandOperand, rightHandOperand);
if (simpleResult !== null) {
// Don't memoize this, it takes longer to set/retrieve than to just compare.
return simpleResult;
}
}
var leftHandType = type(leftHandOperand);
if (leftHandType !== type(rightHandOperand)) {
memoizeSet(leftHandOperand, rightHandOperand, options.memoize, false);
return false;
}
// Temporarily set the operands in the memoize object to prevent blowing the stack
memoizeSet(leftHandOperand, rightHandOperand, options.memoize, true);
var result = extensiveDeepEqualByType(leftHandOperand, rightHandOperand, leftHandType, options);
memoizeSet(leftHandOperand, rightHandOperand, options.memoize, result);
return result;
}
function extensiveDeepEqualByType(leftHandOperand, rightHandOperand, leftHandType, options) {
switch (leftHandType) {
case 'String':
case 'Number':
case 'Boolean':
case 'Date':
// If these types are their instance types (e.g. `new Number`) then re-deepEqual against their values
return deepEqual(leftHandOperand.valueOf(), rightHandOperand.valueOf());
case 'Promise':
case 'Symbol':
case 'function':
case 'WeakMap':
case 'WeakSet':
case 'Error':
return leftHandOperand === rightHandOperand;
case 'Arguments':
case 'Int8Array':
case 'Uint8Array':
case 'Uint8ClampedArray':
case 'Int16Array':
case 'Uint16Array':
case 'Int32Array':
case 'Uint32Array':
case 'Float32Array':
case 'Float64Array':
case 'Array':
return iterableEqual(leftHandOperand, rightHandOperand, options);
case 'RegExp':
return regexpEqual(leftHandOperand, rightHandOperand);
case 'Generator':
return generatorEqual(leftHandOperand, rightHandOperand, options);
case 'DataView':
return iterableEqual(new Uint8Array(leftHandOperand.buffer), new Uint8Array(rightHandOperand.buffer), options);
case 'ArrayBuffer':
return iterableEqual(new Uint8Array(leftHandOperand), new Uint8Array(rightHandOperand), options);
case 'Set':
return entriesEqual(leftHandOperand, rightHandOperand, options);
case 'Map':
return entriesEqual(leftHandOperand, rightHandOperand, options);
default:
return objectEqual(leftHandOperand, rightHandOperand, options);
}
}
/*!
* Compare two Regular Expressions for equality.
*
* @param {RegExp} leftHandOperand
* @param {RegExp} rightHandOperand
* @return {Boolean} result
*/
function regexpEqual(leftHandOperand, rightHandOperand) {
return leftHandOperand.toString() === rightHandOperand.toString();
}
/*!
* Compare two Sets/Maps for equality. Faster than other equality functions.
*
* @param {Set} leftHandOperand
* @param {Set} rightHandOperand
* @param {Object} [options] (Optional)
* @return {Boolean} result
*/
function entriesEqual(leftHandOperand, rightHandOperand, options) {
// IE11 doesn't support Set#entries or Set#@@iterator, so we need manually populate using Set#forEach
if (leftHandOperand.size !== rightHandOperand.size) {
return false;
}
if (leftHandOperand.size === 0) {
return true;
}
var leftHandItems = [];
var rightHandItems = [];
leftHandOperand.forEach(function gatherEntries(key, value) {
leftHandItems.push([ key, value ]);
});
rightHandOperand.forEach(function gatherEntries(key, value) {
rightHandItems.push([ key, value ]);
});
return iterableEqual(leftHandItems.sort(), rightHandItems.sort(), options);
}
/*!
* Simple equality for flat iterable objects such as Arrays, TypedArrays or Node.js buffers.
*
* @param {Iterable} leftHandOperand
* @param {Iterable} rightHandOperand
* @param {Object} [options] (Optional)
* @return {Boolean} result
*/
function iterableEqual(leftHandOperand, rightHandOperand, options) {
var length = leftHandOperand.length;
if (length !== rightHandOperand.length) {
return false;
}
if (length === 0) {
return true;
}
var index = -1;
while (++index < length) {
if (deepEqual(leftHandOperand[index], rightHandOperand[index], options) === false) {
return false;
}
}
return true;
}
/*!
* Simple equality for generator objects such as those returned by generator functions.
*
* @param {Iterable} leftHandOperand
* @param {Iterable} rightHandOperand
* @param {Object} [options] (Optional)
* @return {Boolean} result
*/
function generatorEqual(leftHandOperand, rightHandOperand, options) {
return iterableEqual(getGeneratorEntries(leftHandOperand), getGeneratorEntries(rightHandOperand), options);
}
/*!
* Determine if the given object has an @@iterator function.
*
* @param {Object} target
* @return {Boolean} `true` if the object has an @@iterator function.
*/
function hasIteratorFunction(target) {
return typeof Symbol !== 'undefined' &&
typeof target === 'object' &&
typeof Symbol.iterator !== 'undefined' &&
typeof target[Symbol.iterator] === 'function';
}
/*!
* Gets all iterator entries from the given Object. If the Object has no @@iterator function, returns an empty array.
* This will consume the iterator - which could have side effects depending on the @@iterator implementation.
*
* @param {Object} target
* @returns {Array} an array of entries from the @@iterator function
*/
function getIteratorEntries(target) {
if (hasIteratorFunction(target)) {
try {
return getGeneratorEntries(target[Symbol.iterator]());
} catch (iteratorError) {
return [];
}
}
return [];
}
/*!
* Gets all entries from a Generator. This will consume the generator - which could have side effects.
*
* @param {Generator} target
* @returns {Array} an array of entries from the Generator.
*/
function getGeneratorEntries(generator) {
var generatorResult = generator.next();
var accumulator = [ generatorResult.value ];
while (generatorResult.done === false) {
generatorResult = generator.next();
accumulator.push(generatorResult.value);
}
return accumulator;
}
/*!
* Gets all own and inherited enumerable keys from a target.
*
* @param {Object} target
* @returns {Array} an array of own and inherited enumerable keys from the target.
*/
function getEnumerableKeys(target) {
var keys = [];
for (var key in target) {
keys.push(key);
}
return keys;
}
/*!
* Determines if two objects have matching values, given a set of keys. Defers to deepEqual for the equality check of
* each key. If any value of the given key is not equal, the function will return false (early).
*
* @param {Mixed} leftHandOperand
* @param {Mixed} rightHandOperand
* @param {Array} keys An array of keys to compare the values of leftHandOperand and rightHandOperand against
* @param {Object} [options] (Optional)
* @return {Boolean} result
*/
function keysEqual(leftHandOperand, rightHandOperand, keys, options) {
var length = keys.length;
if (length === 0) {
return true;
}
for (var i = 0; i < length; i += 1) {
if (deepEqual(leftHandOperand[keys[i]], rightHandOperand[keys[i]], options) === false) {
return false;
}
}
return true;
}
/*!
* Recursively check the equality of two Objects. Once basic sameness has been established it will defer to `deepEqual`
* for each enumerable key in the object.
*
* @param {Mixed} leftHandOperand
* @param {Mixed} rightHandOperand
* @param {Object} [options] (Optional)
* @return {Boolean} result
*/
function objectEqual(leftHandOperand, rightHandOperand, options) {
var leftHandKeys = getEnumerableKeys(leftHandOperand);
var rightHandKeys = getEnumerableKeys(rightHandOperand);
if (leftHandKeys.length && leftHandKeys.length === rightHandKeys.length) {
leftHandKeys.sort();
rightHandKeys.sort();
if (iterableEqual(leftHandKeys, rightHandKeys) === false) {
return false;
}
return keysEqual(leftHandOperand, rightHandOperand, leftHandKeys, options);
}
var leftHandEntries = getIteratorEntries(leftHandOperand);
var rightHandEntries = getIteratorEntries(rightHandOperand);
if (leftHandEntries.length && leftHandEntries.length === rightHandEntries.length) {
leftHandEntries.sort();
rightHandEntries.sort();
return iterableEqual(leftHandEntries, rightHandEntries, options);
}
if (leftHandKeys.length === 0 &&
leftHandEntries.length === 0 &&
rightHandKeys.length === 0 &&
rightHandEntries.length === 0) {
return true;
}
return false;
}
/*!
* Returns true if the argument is a primitive.
*
* This intentionally returns true for all objects that can be compared by reference,
* including functions and symbols.
*
* @param {Mixed} value
* @return {Boolean} result
*/
function isPrimitive(value) {
return value === null || typeof value !== 'object';
}
},{"type-detect":38}],36:[function(require,module,exports){
'use strict';
/* !
* Chai - getFuncName utility
* Copyright(c) 2012-2016 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/
/**
* ### .getFuncName(constructorFn)
*
* Returns the name of a function.
* When a non-function instance is passed, returns `null`.
* This also includes a polyfill function if `aFunc.name` is not defined.
*
* @name getFuncName
* @param {Function} funct
* @namespace Utils
* @api public
*/
var toString = Function.prototype.toString;
var functionNameMatch = /\s*function(?:\s|\s*\/\*[^(?:*\/)]+\*\/\s*)*([^\s\(\/]+)/;
function getFuncName(aFunc) {
if (typeof aFunc !== 'function') {
return null;
}
var name = '';
if (typeof Function.prototype.name === 'undefined' && typeof aFunc.name === 'undefined') {
// Here we run a polyfill if Function does not support the `name` property and if aFunc.name is not defined
var match = toString.call(aFunc).match(functionNameMatch);
if (match) {
name = match[1];
}
} else {
// If we've got a `name` property we just use it
name = aFunc.name;
}
return name;
}
module.exports = getFuncName;
},{}],37:[function(require,module,exports){
'use strict';
/* !
* Chai - pathval utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* @see https://github.com/logicalparadox/filtr
* MIT Licensed
*/
/**
* ### .hasProperty(object, name)
*
* This allows checking whether an object has own
* or inherited from prototype chain named property.
*
* Basically does the same thing as the `in`
* operator but works properly with null/undefined values
* and other primitives.
*
* var obj = {
* arr: ['a', 'b', 'c']
* , str: 'Hello'
* }
*
* The following would be the results.
*
* hasProperty(obj, 'str'); // true
* hasProperty(obj, 'constructor'); // true
* hasProperty(obj, 'bar'); // false
*
* hasProperty(obj.str, 'length'); // true
* hasProperty(obj.str, 1); // true
* hasProperty(obj.str, 5); // false
*
* hasProperty(obj.arr, 'length'); // true
* hasProperty(obj.arr, 2); // true
* hasProperty(obj.arr, 3); // false
*
* @param {Object} object
* @param {String|Symbol} name
* @returns {Boolean} whether it exists
* @namespace Utils
* @name hasProperty
* @api public
*/
function hasProperty(obj, name) {
if (typeof obj === 'undefined' || obj === null) {
return false;
}
// The `in` operator does not work with primitives.
return name in Object(obj);
}
/* !
* ## parsePath(path)
*
* Helper function used to parse string object
* paths. Use in conjunction with `internalGetPathValue`.
*
* var parsed = parsePath('myobject.property.subprop');
*
* ### Paths:
*
* * Can be infinitely deep and nested.
* * Arrays are also valid using the formal `myobject.document[3].property`.
* * Literal dots and brackets (not delimiter) must be backslash-escaped.
*
* @param {String} path
* @returns {Object} parsed
* @api private
*/
function parsePath(path) {
var str = path.replace(/([^\\])\[/g, '$1.[');
var parts = str.match(/(\\\.|[^.]+?)+/g);
return parts.map(function mapMatches(value) {
var regexp = /^\[(\d+)\]$/;
var mArr = regexp.exec(value);
var parsed = null;
if (mArr) {
parsed = { i: parseFloat(mArr[1]) };
} else {
parsed = { p: value.replace(/\\([.\[\]])/g, '$1') };
}
return parsed;
});
}
/* !
* ## internalGetPathValue(obj, parsed[, pathDepth])
*
* Helper companion function for `.parsePath` that returns
* the value located at the parsed address.
*
* var value = getPathValue(obj, parsed);
*
* @param {Object} object to search against
* @param {Object} parsed definition from `parsePath`.
* @param {Number} depth (nesting level) of the property we want to retrieve
* @returns {Object|Undefined} value
* @api private
*/
function internalGetPathValue(obj, parsed, pathDepth) {
var temporaryValue = obj;
var res = null;
pathDepth = (typeof pathDepth === 'undefined' ? parsed.length : pathDepth);
for (var i = 0; i < pathDepth; i++) {
var part = parsed[i];
if (temporaryValue) {
if (typeof part.p === 'undefined') {
temporaryValue = temporaryValue[part.i];
} else {
temporaryValue = temporaryValue[part.p];
}
if (i === (pathDepth - 1)) {
res = temporaryValue;
}
}
}
return res;
}
/* !
* ## internalSetPathValue(obj, value, parsed)
*
* Companion function for `parsePath` that sets
* the value located at a parsed address.
*
* internalSetPathValue(obj, 'value', parsed);
*
* @param {Object} object to search and define on
* @param {*} value to use upon set
* @param {Object} parsed definition from `parsePath`
* @api private
*/
function internalSetPathValue(obj, val, parsed) {
var tempObj = obj;
var pathDepth = parsed.length;
var part = null;
// Here we iterate through every part of the path
for (var i = 0; i < pathDepth; i++) {
var propName = null;
var propVal = null;
part = parsed[i];
// If it's the last part of the path, we set the 'propName' value with the property name
if (i === (pathDepth - 1)) {
propName = typeof part.p === 'undefined' ? part.i : part.p;
// Now we set the property with the name held by 'propName' on object with the desired val
tempObj[propName] = val;
} else if (typeof part.p !== 'undefined' && tempObj[part.p]) {
tempObj = tempObj[part.p];
} else if (typeof part.i !== 'undefined' && tempObj[part.i]) {
tempObj = tempObj[part.i];
} else {
// If the obj doesn't have the property we create one with that name to define it
var next = parsed[i + 1];
// Here we set the name of the property which will be defined
propName = typeof part.p === 'undefined' ? part.i : part.p;
// Here we decide if this property will be an array or a new object
propVal = typeof next.p === 'undefined' ? [] : {};
tempObj[propName] = propVal;
tempObj = tempObj[propName];
}
}
}
/**
* ### .getPathInfo(object, path)
*
* This allows the retrieval of property info in an
* object given a string path.
*
* The path info consists of an object with the
* following properties:
*
* * parent - The parent object of the property referenced by `path`
* * name - The name of the final property, a number if it was an array indexer
* * value - The value of the property, if it exists, otherwise `undefined`
* * exists - Whether the property exists or not
*
* @param {Object} object
* @param {String} path
* @returns {Object} info
* @namespace Utils
* @name getPathInfo
* @api public
*/
function getPathInfo(obj, path) {
var parsed = parsePath(path);
var last = parsed[parsed.length - 1];
var info = {
parent: parsed.length > 1 ? internalGetPathValue(obj, parsed, parsed.length - 1) : obj,
name: last.p || last.i,
value: internalGetPathValue(obj, parsed),
};
info.exists = hasProperty(info.parent, info.name);
return info;
}
/**
* ### .getPathValue(object, path)
*
* This allows the retrieval of values in an
* object given a string path.
*
* var obj = {
* prop1: {
* arr: ['a', 'b', 'c']
* , str: 'Hello'
* }
* , prop2: {
* arr: [ { nested: 'Universe' } ]
* , str: 'Hello again!'
* }
* }
*
* The following would be the results.
*
* getPathValue(obj, 'prop1.str'); // Hello
* getPathValue(obj, 'prop1.att[2]'); // b
* getPathValue(obj, 'prop2.arr[0].nested'); // Universe
*
* @param {Object} object
* @param {String} path
* @returns {Object} value or `undefined`
* @namespace Utils
* @name getPathValue
* @api public
*/
function getPathValue(obj, path) {
var info = getPathInfo(obj, path);
return info.value;
}
/**
* ### .setPathValue(object, path, value)
*
* Define the value in an object at a given string path.
*
* ```js
* var obj = {
* prop1: {
* arr: ['a', 'b', 'c']
* , str: 'Hello'
* }
* , prop2: {
* arr: [ { nested: 'Universe' } ]
* , str: 'Hello again!'
* }
* };
* ```
*
* The following would be acceptable.
*
* ```js
* var properties = require('tea-properties');
* properties.set(obj, 'prop1.str', 'Hello Universe!');
* properties.set(obj, 'prop1.arr[2]', 'B');
* properties.set(obj, 'prop2.arr[0].nested.value', { hello: 'universe' });
* ```
*
* @param {Object} object
* @param {String} path
* @param {Mixed} value
* @api private
*/
function setPathValue(obj, path, val) {
var parsed = parsePath(path);
internalSetPathValue(obj, val, parsed);
return obj;
}
module.exports = {
hasProperty: hasProperty,
getPathInfo: getPathInfo,
getPathValue: getPathValue,
setPathValue: setPathValue,
};
},{}],38:[function(require,module,exports){
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global.typeDetect = factory());
}(this, (function () { 'use strict';
/* !
* type-detect
* Copyright(c) 2013 jake luer <jake@alogicalparadox.com>
* MIT Licensed
*/
var promiseExists = typeof Promise === 'function';
/* eslint-disable no-undef */
var globalObject = typeof self === 'object' ? self : global; // eslint-disable-line id-blacklist
var symbolExists = typeof Symbol !== 'undefined';
var mapExists = typeof Map !== 'undefined';
var setExists = typeof Set !== 'undefined';
var weakMapExists = typeof WeakMap !== 'undefined';
var weakSetExists = typeof WeakSet !== 'undefined';
var dataViewExists = typeof DataView !== 'undefined';
var symbolIteratorExists = symbolExists && typeof Symbol.iterator !== 'undefined';
var symbolToStringTagExists = symbolExists && typeof Symbol.toStringTag !== 'undefined';
var setEntriesExists = setExists && typeof Set.prototype.entries === 'function';
var mapEntriesExists = mapExists && typeof Map.prototype.entries === 'function';
var setIteratorPrototype = setEntriesExists && Object.getPrototypeOf(new Set().entries());
var mapIteratorPrototype = mapEntriesExists && Object.getPrototypeOf(new Map().entries());
var arrayIteratorExists = symbolIteratorExists && typeof Array.prototype[Symbol.iterator] === 'function';
var arrayIteratorPrototype = arrayIteratorExists && Object.getPrototypeOf([][Symbol.iterator]());
var stringIteratorExists = symbolIteratorExists && typeof String.prototype[Symbol.iterator] === 'function';
var stringIteratorPrototype = stringIteratorExists && Object.getPrototypeOf(''[Symbol.iterator]());
var toStringLeftSliceLength = 8;
var toStringRightSliceLength = -1;
/**
* ### typeOf (obj)
*
* Uses `Object.prototype.toString` to determine the type of an object,
* normalising behaviour across engine versions & well optimised.
*
* @param {Mixed} object
* @return {String} object type
* @api public
*/
function typeDetect(obj) {
/* ! Speed optimisation
* Pre:
* string literal x 3,039,035 ops/sec ±1.62% (78 runs sampled)
* boolean literal x 1,424,138 ops/sec ±4.54% (75 runs sampled)
* number literal x 1,653,153 ops/sec ±1.91% (82 runs sampled)
* undefined x 9,978,660 ops/sec ±1.92% (75 runs sampled)
* function x 2,556,769 ops/sec ±1.73% (77 runs sampled)
* Post:
* string literal x 38,564,796 ops/sec ±1.15% (79 runs sampled)
* boolean literal x 31,148,940 ops/sec ±1.10% (79 runs sampled)
* number literal x 32,679,330 ops/sec ±1.90% (78 runs sampled)
* undefined x 32,363,368 ops/sec ±1.07% (82 runs sampled)
* function x 31,296,870 ops/sec ±0.96% (83 runs sampled)
*/
var typeofObj = typeof obj;
if (typeofObj !== 'object') {
return typeofObj;
}
/* ! Speed optimisation
* Pre:
* null x 28,645,765 ops/sec ±1.17% (82 runs sampled)
* Post:
* null x 36,428,962 ops/sec ±1.37% (84 runs sampled)
*/
if (obj === null) {
return 'null';
}
/* ! Spec Conformance
* Test: `Object.prototype.toString.call(window)``
* - Node === "[object global]"
* - Chrome === "[object global]"
* - Firefox === "[object Window]"
* - PhantomJS === "[object Window]"
* - Safari === "[object Window]"
* - IE 11 === "[object Window]"
* - IE Edge === "[object Window]"
* Test: `Object.prototype.toString.call(this)``
* - Chrome Worker === "[object global]"
* - Firefox Worker === "[object DedicatedWorkerGlobalScope]"
* - Safari Worker === "[object DedicatedWorkerGlobalScope]"
* - IE 11 Worker === "[object WorkerGlobalScope]"
* - IE Edge Worker === "[object WorkerGlobalScope]"
*/
if (obj === globalObject) {
return 'global';
}
/* ! Speed optimisation
* Pre:
* array literal x 2,888,352 ops/sec ±0.67% (82 runs sampled)
* Post:
* array literal x 22,479,650 ops/sec ±0.96% (81 runs sampled)
*/
if (
Array.isArray(obj) &&
(symbolToStringTagExists === false || !(Symbol.toStringTag in obj))
) {
return 'Array';
}
// Not caching existence of `window` and related properties due to potential
// for `window` to be unset before tests in quasi-browser environments.
if (typeof window === 'object' && window !== null) {
/* ! Spec Conformance
* (https://html.spec.whatwg.org/multipage/browsers.html#location)
* WhatWG HTML$7.7.3 - The `Location` interface
* Test: `Object.prototype.toString.call(window.location)``
* - IE <=11 === "[object Object]"
* - IE Edge <=13 === "[object Object]"
*/
if (typeof window.location === 'object' && obj === window.location) {
return 'Location';
}
/* ! Spec Conformance
* (https://html.spec.whatwg.org/#document)
* WhatWG HTML$3.1.1 - The `Document` object
* Note: Most browsers currently adher to the W3C DOM Level 2 spec
* (https://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-26809268)
* which suggests that browsers should use HTMLTableCellElement for
* both TD and TH elements. WhatWG separates these.
* WhatWG HTML states:
* > For historical reasons, Window objects must also have a
* > writable, configurable, non-enumerable property named
* > HTMLDocument whose value is the Document interface object.
* Test: `Object.prototype.toString.call(document)``
* - Chrome === "[object HTMLDocument]"
* - Firefox === "[object HTMLDocument]"
* - Safari === "[object HTMLDocument]"
* - IE <=10 === "[object Document]"
* - IE 11 === "[object HTMLDocument]"
* - IE Edge <=13 === "[object HTMLDocument]"
*/
if (typeof window.document === 'object' && obj === window.document) {
return 'Document';
}
if (typeof window.navigator === 'object') {
/* ! Spec Conformance
* (https://html.spec.whatwg.org/multipage/webappapis.html#mimetypearray)
* WhatWG HTML$8.6.1.5 - Plugins - Interface MimeTypeArray
* Test: `Object.prototype.toString.call(navigator.mimeTypes)``
* - IE <=10 === "[object MSMimeTypesCollection]"
*/
if (typeof window.navigator.mimeTypes === 'object' &&
obj === window.navigator.mimeTypes) {
return 'MimeTypeArray';
}
/* ! Spec Conformance
* (https://html.spec.whatwg.org/multipage/webappapis.html#pluginarray)
* WhatWG HTML$8.6.1.5 - Plugins - Interface PluginArray
* Test: `Object.prototype.toString.call(navigator.plugins)``
* - IE <=10 === "[object MSPluginsCollection]"
*/
if (typeof window.navigator.plugins === 'object' &&
obj === window.navigator.plugins) {
return 'PluginArray';
}
}
if ((typeof window.HTMLElement === 'function' ||
typeof window.HTMLElement === 'object') &&
obj instanceof window.HTMLElement) {
/* ! Spec Conformance
* (https://html.spec.whatwg.org/multipage/webappapis.html#pluginarray)
* WhatWG HTML$4.4.4 - The `blockquote` element - Interface `HTMLQuoteElement`
* Test: `Object.prototype.toString.call(document.createElement('blockquote'))``
* - IE <=10 === "[object HTMLBlockElement]"
*/
if (obj.tagName === 'BLOCKQUOTE') {
return 'HTMLQuoteElement';
}
/* ! Spec Conformance
* (https://html.spec.whatwg.org/#htmltabledatacellelement)
* WhatWG HTML$4.9.9 - The `td` element - Interface `HTMLTableDataCellElement`
* Note: Most browsers currently adher to the W3C DOM Level 2 spec
* (https://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-82915075)
* which suggests that browsers should use HTMLTableCellElement for
* both TD and TH elements. WhatWG separates these.
* Test: Object.prototype.toString.call(document.createElement('td'))
* - Chrome === "[object HTMLTableCellElement]"
* - Firefox === "[object HTMLTableCellElement]"
* - Safari === "[object HTMLTableCellElement]"
*/
if (obj.tagName === 'TD') {
return 'HTMLTableDataCellElement';
}
/* ! Spec Conformance
* (https://html.spec.whatwg.org/#htmltableheadercellelement)
* WhatWG HTML$4.9.9 - The `td` element - Interface `HTMLTableHeaderCellElement`
* Note: Most browsers currently adher to the W3C DOM Level 2 spec
* (https://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-82915075)
* which suggests that browsers should use HTMLTableCellElement for
* both TD and TH elements. WhatWG separates these.
* Test: Object.prototype.toString.call(document.createElement('th'))
* - Chrome === "[object HTMLTableCellElement]"
* - Firefox === "[object HTMLTableCellElement]"
* - Safari === "[object HTMLTableCellElement]"
*/
if (obj.tagName === 'TH') {
return 'HTMLTableHeaderCellElement';
}
}
}
/* ! Speed optimisation
* Pre:
* Float64Array x 625,644 ops/sec ±1.58% (80 runs sampled)
* Float32Array x 1,279,852 ops/sec ±2.91% (77 runs sampled)
* Uint32Array x 1,178,185 ops/sec ±1.95% (83 runs sampled)
* Uint16Array x 1,008,380 ops/sec ±2.25% (80 runs sampled)
* Uint8Array x 1,128,040 ops/sec ±2.11% (81 runs sampled)
* Int32Array x 1,170,119 ops/sec ±2.88% (80 runs sampled)
* Int16Array x 1,176,348 ops/sec ±5.79% (86 runs sampled)
* Int8Array x 1,058,707 ops/sec ±4.94% (77 runs sampled)
* Uint8ClampedArray x 1,110,633 ops/sec ±4.20% (80 runs sampled)
* Post:
* Float64Array x 7,105,671 ops/sec ±13.47% (64 runs sampled)
* Float32Array x 5,887,912 ops/sec ±1.46% (82 runs sampled)
* Uint32Array x 6,491,661 ops/sec ±1.76% (79 runs sampled)
* Uint16Array x 6,559,795 ops/sec ±1.67% (82 runs sampled)
* Uint8Array x 6,463,966 ops/sec ±1.43% (85 runs sampled)
* Int32Array x 5,641,841 ops/sec ±3.49% (81 runs sampled)
* Int16Array x 6,583,511 ops/sec ±1.98% (80 runs sampled)
* Int8Array x 6,606,078 ops/sec ±1.74% (81 runs sampled)
* Uint8ClampedArray x 6,602,224 ops/sec ±1.77% (83 runs sampled)
*/
var stringTag = (symbolToStringTagExists && obj[Symbol.toStringTag]);
if (typeof stringTag === 'string') {
return stringTag;
}
var objPrototype = Object.getPrototypeOf(obj);
/* ! Speed optimisation
* Pre:
* regex literal x 1,772,385 ops/sec ±1.85% (77 runs sampled)
* regex constructor x 2,143,634 ops/sec ±2.46% (78 runs sampled)
* Post:
* regex literal x 3,928,009 ops/sec ±0.65% (78 runs sampled)
* regex constructor x 3,931,108 ops/sec ±0.58% (84 runs sampled)
*/
if (objPrototype === RegExp.prototype) {
return 'RegExp';
}
/* ! Speed optimisation
* Pre:
* date x 2,130,074 ops/sec ±4.42% (68 runs sampled)
* Post:
* date x 3,953,779 ops/sec ±1.35% (77 runs sampled)
*/
if (objPrototype === Date.prototype) {
return 'Date';
}
/* ! Spec Conformance
* (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-promise.prototype-@@tostringtag)
* ES6$25.4.5.4 - Promise.prototype[@@toStringTag] should be "Promise":
* Test: `Object.prototype.toString.call(Promise.resolve())``
* - Chrome <=47 === "[object Object]"
* - Edge <=20 === "[object Object]"
* - Firefox 29-Latest === "[object Promise]"
* - Safari 7.1-Latest === "[object Promise]"
*/
if (promiseExists && objPrototype === Promise.prototype) {
return 'Promise';
}
/* ! Speed optimisation
* Pre:
* set x 2,222,186 ops/sec ±1.31% (82 runs sampled)
* Post:
* set x 4,545,879 ops/sec ±1.13% (83 runs sampled)
*/
if (setExists && objPrototype === Set.prototype) {
return 'Set';
}
/* ! Speed optimisation
* Pre:
* map x 2,396,842 ops/sec ±1.59% (81 runs sampled)
* Post:
* map x 4,183,945 ops/sec ±6.59% (82 runs sampled)
*/
if (mapExists && objPrototype === Map.prototype) {
return 'Map';
}
/* ! Speed optimisation
* Pre:
* weakset x 1,323,220 ops/sec ±2.17% (76 runs sampled)
* Post:
* weakset x 4,237,510 ops/sec ±2.01% (77 runs sampled)
*/
if (weakSetExists && objPrototype === WeakSet.prototype) {
return 'WeakSet';
}
/* ! Speed optimisation
* Pre:
* weakmap x 1,500,260 ops/sec ±2.02% (78 runs sampled)
* Post:
* weakmap x 3,881,384 ops/sec ±1.45% (82 runs sampled)
*/
if (weakMapExists && objPrototype === WeakMap.prototype) {
return 'WeakMap';
}
/* ! Spec Conformance
* (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-dataview.prototype-@@tostringtag)
* ES6$24.2.4.21 - DataView.prototype[@@toStringTag] should be "DataView":
* Test: `Object.prototype.toString.call(new DataView(new ArrayBuffer(1)))``
* - Edge <=13 === "[object Object]"
*/
if (dataViewExists && objPrototype === DataView.prototype) {
return 'DataView';
}
/* ! Spec Conformance
* (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-%mapiteratorprototype%-@@tostringtag)
* ES6$23.1.5.2.2 - %MapIteratorPrototype%[@@toStringTag] should be "Map Iterator":
* Test: `Object.prototype.toString.call(new Map().entries())``
* - Edge <=13 === "[object Object]"
*/
if (mapExists && objPrototype === mapIteratorPrototype) {
return 'Map Iterator';
}
/* ! Spec Conformance
* (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-%setiteratorprototype%-@@tostringtag)
* ES6$23.2.5.2.2 - %SetIteratorPrototype%[@@toStringTag] should be "Set Iterator":
* Test: `Object.prototype.toString.call(new Set().entries())``
* - Edge <=13 === "[object Object]"
*/
if (setExists && objPrototype === setIteratorPrototype) {
return 'Set Iterator';
}
/* ! Spec Conformance
* (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-%arrayiteratorprototype%-@@tostringtag)
* ES6$22.1.5.2.2 - %ArrayIteratorPrototype%[@@toStringTag] should be "Array Iterator":
* Test: `Object.prototype.toString.call([][Symbol.iterator]())``
* - Edge <=13 === "[object Object]"
*/
if (arrayIteratorExists && objPrototype === arrayIteratorPrototype) {
return 'Array Iterator';
}
/* ! Spec Conformance
* (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-%stringiteratorprototype%-@@tostringtag)
* ES6$21.1.5.2.2 - %StringIteratorPrototype%[@@toStringTag] should be "String Iterator":
* Test: `Object.prototype.toString.call(''[Symbol.iterator]())``
* - Edge <=13 === "[object Object]"
*/
if (stringIteratorExists && objPrototype === stringIteratorPrototype) {
return 'String Iterator';
}
/* ! Speed optimisation
* Pre:
* object from null x 2,424,320 ops/sec ±1.67% (76 runs sampled)
* Post:
* object from null x 5,838,000 ops/sec ±0.99% (84 runs sampled)
*/
if (objPrototype === null) {
return 'Object';
}
return Object
.prototype
.toString
.call(obj)
.slice(toStringLeftSliceLength, toStringRightSliceLength);
}
return typeDetect;
})));
},{}]},{},[1])(1)
});