| 'use strict'; |
| |
| var trimLeft = require('../'); |
| trimLeft.shim(); |
| |
| var runTests = require('./tests'); |
| |
| var test = require('tape'); |
| var defineProperties = require('define-properties'); |
| var bind = require('function-bind'); |
| var isEnumerable = Object.prototype.propertyIsEnumerable; |
| var functionsHaveNames = require('functions-have-names')(); |
| |
| test('shimmed', function (t) { |
| t.equal(String.prototype.trimLeft.length, 0, 'String#trimLeft has a length of 0'); |
| t.test('Function name', { skip: !functionsHaveNames }, function (st) { |
| st.equal((/^(?:trimLeft|trimStart)$/).test(String.prototype.trimLeft.name), true, 'String#trimLeft has name "trimLeft" or "trimStart"'); |
| st.end(); |
| }); |
| |
| t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) { |
| et.equal(false, isEnumerable.call(String.prototype, 'trimLeft'), 'String#trimLeft is not enumerable'); |
| et.end(); |
| }); |
| |
| var supportsStrictMode = (function () { return typeof this === 'undefined'; }()); |
| |
| t.test('bad string/this value', { skip: !supportsStrictMode }, function (st) { |
| st['throws'](function () { return trimLeft(undefined, 'a'); }, TypeError, 'undefined is not an object'); |
| st['throws'](function () { return trimLeft(null, 'a'); }, TypeError, 'null is not an object'); |
| st.end(); |
| }); |
| |
| runTests(bind.call(Function.call, String.prototype.trimLeft), t); |
| |
| t.end(); |
| }); |