| /* |
| Copyright (c) 2013, Yahoo! Inc. All rights reserved. |
| Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms. |
| */ |
| var path = require('path'), |
| fs = require('fs'), |
| existsSync = fs.existsSync || path.existsSync, |
| CAMEL_PATTERN = /([a-z])([A-Z])/g, |
| YML_PATTERN = /\.ya?ml$/, |
| yaml = require('js-yaml'), |
| defaults = require('./report/common/defaults'); |
| |
| function defaultConfig(includeBackCompatAttrs) { |
| var ret = { |
| verbose: false, |
| instrumentation: { |
| root: '.', |
| extensions: ['.js'], |
| 'default-excludes': true, |
| excludes: [], |
| 'embed-source': false, |
| variable: '__coverage__', |
| compact: true, |
| 'preserve-comments': false, |
| 'complete-copy': false, |
| 'save-baseline': false, |
| 'baseline-file': './coverage/coverage-baseline.json', |
| 'include-all-sources': false, |
| 'include-pid': false, |
| 'es-modules': false |
| }, |
| reporting: { |
| print: 'summary', |
| reports: [ 'lcov' ], |
| dir: './coverage' |
| }, |
| hooks: { |
| 'hook-run-in-context': false, |
| 'post-require-hook': null, |
| 'handle-sigint': false |
| }, |
| check: { |
| global: { |
| statements: 0, |
| lines: 0, |
| branches: 0, |
| functions: 0, |
| excludes: [] // Currently list of files (root + path). For future, extend to patterns. |
| }, |
| each: { |
| statements: 0, |
| lines: 0, |
| branches: 0, |
| functions: 0, |
| excludes: [] |
| } |
| } |
| }; |
| ret.reporting.watermarks = defaults.watermarks(); |
| ret.reporting['report-config'] = defaults.defaultReportConfig(); |
| |
| if (includeBackCompatAttrs) { |
| ret.instrumentation['preload-sources'] = false; |
| } |
| |
| return ret; |
| } |
| |
| function dasherize(word) { |
| return word.replace(CAMEL_PATTERN, function (match, lch, uch) { |
| return lch + '-' + uch.toLowerCase(); |
| }); |
| } |
| function isScalar(v) { |
| if (v === null) { return true; } |
| return v !== undefined && !Array.isArray(v) && typeof v !== 'object'; |
| } |
| |
| function isObject(v) { |
| return typeof v === 'object' && v !== null && !Array.isArray(v); |
| } |
| |
| function mergeObjects(explicit, template) { |
| |
| var ret = {}; |
| |
| Object.keys(template).forEach(function (k) { |
| var v1 = template[k], |
| v2 = explicit[k]; |
| |
| if (Array.isArray(v1)) { |
| ret[k] = Array.isArray(v2) && v2.length > 0 ? v2 : v1; |
| } else if (isObject(v1)) { |
| v2 = isObject(v2) ? v2 : {}; |
| ret[k] = mergeObjects(v2, v1); |
| } else { |
| ret[k] = isScalar(v2) ? v2 : v1; |
| } |
| }); |
| return ret; |
| } |
| |
| function mergeDefaults(explicit, implicit) { |
| return mergeObjects(explicit || {}, implicit); |
| } |
| |
| function addMethods() { |
| var args = Array.prototype.slice.call(arguments), |
| cons = args.shift(); |
| |
| args.forEach(function (arg) { |
| var method = arg, |
| property = dasherize(arg); |
| cons.prototype[method] = function () { |
| return this.config[property]; |
| }; |
| }); |
| } |
| |
| /** |
| * Object that returns instrumentation options |
| * @class InstrumentOptions |
| * @module config |
| * @constructor |
| * @param config the instrumentation part of the config object |
| */ |
| function InstrumentOptions(config) { |
| if (config['preload-sources']) { |
| console.error('The preload-sources option is deprecated, please use include-all-sources instead.'); |
| config['include-all-sources'] = config['preload-sources']; |
| } |
| this.config = config; |
| } |
| |
| /** |
| * returns if default excludes should be turned on. Used by the `cover` command. |
| * @method defaultExcludes |
| * @return {Boolean} true if default excludes should be turned on |
| */ |
| /** |
| * returns if non-JS files should be copied during instrumentation. Used by the |
| * `instrument` command. |
| * @method completeCopy |
| * @return {Boolean} true if non-JS files should be copied |
| */ |
| /** |
| * returns if the source should be embedded in the instrumented code. Used by the |
| * `instrument` command. |
| * @method embedSource |
| * @return {Boolean} true if the source should be embedded in the instrumented code |
| */ |
| /** |
| * the coverage variable name to use. Used by the `instrument` command. |
| * @method variable |
| * @return {String} the coverage variable name to use |
| */ |
| /** |
| * returns if the output should be compact JS. Used by the `instrument` command. |
| * @method compact |
| * @return {Boolean} true if the output should be compact |
| */ |
| /** |
| * returns if comments should be preserved in the generated JS. Used by the |
| * `cover` and `instrument` commands. |
| * @method preserveComments |
| * @return {Boolean} true if comments should be preserved in the generated JS |
| */ |
| /** |
| * returns if a zero-coverage baseline file should be written as part of |
| * instrumentation. This allows reporting to display numbers for files that have |
| * no tests. Used by the `instrument` command. |
| * @method saveBaseline |
| * @return {Boolean} true if a baseline coverage file should be written. |
| */ |
| /** |
| * Sets the baseline coverage filename. Used by the `instrument` command. |
| * @method baselineFile |
| * @return {String} the name of the baseline coverage file. |
| */ |
| /** |
| * returns if comments the JS to instrument contains es6 Module syntax. |
| * @method esModules |
| * @return {Boolean} true if code contains es6 import/export statements. |
| */ |
| /** |
| * returns if the coverage filename should include the PID. Used by the `instrument` command. |
| * @method includePid |
| * @return {Boolean} true to include pid in coverage filename. |
| */ |
| |
| |
| addMethods(InstrumentOptions, |
| 'extensions', 'defaultExcludes', 'completeCopy', |
| 'embedSource', 'variable', 'compact', 'preserveComments', |
| 'saveBaseline', 'baselineFile', 'esModules', |
| 'includeAllSources', 'includePid'); |
| |
| /** |
| * returns the root directory used by istanbul which is typically the root of the |
| * source tree. Used by the `cover` and `report` commands. |
| * @method root |
| * @return {String} the root directory used by istanbul. |
| */ |
| InstrumentOptions.prototype.root = function () { return path.resolve(this.config.root); }; |
| /** |
| * returns an array of glob patterns that should be excluded for instrumentation. |
| * Used by the `instrument` and `cover` commands. |
| * @method excludes |
| * @return {Array} an array of glob patterns that should be excluded for |
| * instrumentation. |
| */ |
| InstrumentOptions.prototype.excludes = function (excludeTests) { |
| var defs; |
| if (this.defaultExcludes()) { |
| defs = [ '**/node_modules/**' ]; |
| if (excludeTests) { |
| defs = defs.concat(['**/test/**', '**/tests/**']); |
| } |
| return defs.concat(this.config.excludes); |
| } |
| return this.config.excludes; |
| }; |
| |
| /** |
| * Object that returns reporting options |
| * @class ReportingOptions |
| * @module config |
| * @constructor |
| * @param config the reporting part of the config object |
| */ |
| function ReportingOptions(config) { |
| this.config = config; |
| } |
| |
| /** |
| * returns the kind of information to be printed on the console. May be one |
| * of `summary`, `detail`, `both` or `none`. Used by the |
| * `cover` command. |
| * @method print |
| * @return {String} the kind of information to print to the console at the end |
| * of the `cover` command execution. |
| */ |
| /** |
| * returns a list of reports that should be generated at the end of a run. Used |
| * by the `cover` and `report` commands. |
| * @method reports |
| * @return {Array} an array of reports that should be produced |
| */ |
| /** |
| * returns the directory under which reports should be generated. Used by the |
| * `cover` and `report` commands. |
| * |
| * @method dir |
| * @return {String} the directory under which reports should be generated. |
| */ |
| /** |
| * returns an object that has keys that are report format names and values that are objects |
| * containing detailed configuration for each format. Running `istanbul help config` |
| * will give you all the keys per report format that can be overridden. |
| * Used by the `cover` and `report` commands. |
| * @method reportConfig |
| * @return {Object} detailed report configuration per report format. |
| */ |
| addMethods(ReportingOptions, 'print', 'reports', 'dir', 'reportConfig'); |
| |
| function isInvalidMark(v, key) { |
| var prefix = 'Watermark for [' + key + '] :'; |
| |
| if (v.length !== 2) { |
| return prefix + 'must be an array of length 2'; |
| } |
| v[0] = Number(v[0]); |
| v[1] = Number(v[1]); |
| |
| if (isNaN(v[0]) || isNaN(v[1])) { |
| return prefix + 'must have valid numbers'; |
| } |
| if (v[0] < 0 || v[1] < 0) { |
| return prefix + 'must be positive numbers'; |
| } |
| if (v[1] > 100) { |
| return prefix + 'cannot exceed 100'; |
| } |
| if (v[1] <= v[0]) { |
| return prefix + 'low must be less than high'; |
| } |
| return null; |
| } |
| |
| /** |
| * returns the low and high watermarks to be used to designate whether coverage |
| * is `low`, `medium` or `high`. Statements, functions, branches and lines can |
| * have independent watermarks. These are respected by all reports |
| * that color for low, medium and high coverage. See the default configuration for exact syntax |
| * using `istanbul help config`. Used by the `cover` and `report` commands. |
| * |
| * @method watermarks |
| * @return {Object} an object containing low and high watermarks for statements, |
| * branches, functions and lines. |
| */ |
| ReportingOptions.prototype.watermarks = function () { |
| var v = this.config.watermarks, |
| defs = defaults.watermarks(), |
| ret = {}; |
| |
| Object.keys(defs).forEach(function (k) { |
| var mark = v[k], //it will already be a non-zero length array because of the way the merge works |
| message = isInvalidMark(mark, k); |
| if (message) { |
| console.error(message); |
| ret[k] = defs[k]; |
| } else { |
| ret[k] = mark; |
| } |
| }); |
| return ret; |
| }; |
| |
| /** |
| * Object that returns hook options. Note that istanbul does not provide an |
| * option to hook `require`. This is always done by the `cover` command. |
| * @class HookOptions |
| * @module config |
| * @constructor |
| * @param config the hooks part of the config object |
| */ |
| function HookOptions(config) { |
| this.config = config; |
| } |
| |
| /** |
| * returns if `vm.runInThisContext` needs to be hooked, in addition to the standard |
| * `require` hooks added by istanbul. This should be true for code that uses |
| * RequireJS for example. Used by the `cover` command. |
| * @method hookRunInContext |
| * @return {Boolean} true if `vm.runInThisContext` needs to be hooked for coverage |
| */ |
| /** |
| * returns a path to JS file or a dependent module that should be used for |
| * post-processing files after they have been required. See the `yui-istanbul` module for |
| * an example of a post-require hook. This particular hook modifies the yui loader when |
| * that file is required to add istanbul interceptors. Use by the `cover` command |
| * |
| * @method postRequireHook |
| * @return {String} a path to a JS file or the name of a node module that needs |
| * to be used as a `require` post-processor |
| */ |
| /** |
| * returns if istanbul needs to add a SIGINT (control-c, usually) handler to |
| * save coverage information. Useful for getting code coverage out of processes |
| * that run forever and need a SIGINT to terminate. |
| * @method handleSigint |
| * @return {Boolean} true if SIGINT needs to be hooked to write coverage information |
| */ |
| |
| addMethods(HookOptions, 'hookRunInContext', 'postRequireHook', 'handleSigint'); |
| |
| /** |
| * represents the istanbul configuration and provides sub-objects that can |
| * return instrumentation, reporting and hook options respectively. |
| * Usage |
| * ----- |
| * |
| * var configObj = require('istanbul').config.loadFile(); |
| * |
| * console.log(configObj.reporting.reports()); |
| * |
| * @class Configuration |
| * @module config |
| * @param {Object} obj the base object to use as the configuration |
| * @param {Object} overrides optional - override attributes that are merged into |
| * the base config |
| * @constructor |
| */ |
| function Configuration(obj, overrides) { |
| |
| var config = mergeDefaults(obj, defaultConfig(true)); |
| if (isObject(overrides)) { |
| config = mergeDefaults(overrides, config); |
| } |
| if (config.verbose) { |
| console.error('Using configuration'); |
| console.error('-------------------'); |
| console.error(yaml.safeDump(config, { indent: 4, flowLevel: 3 })); |
| console.error('-------------------\n'); |
| } |
| this.verbose = config.verbose; |
| this.instrumentation = new InstrumentOptions(config.instrumentation); |
| this.reporting = new ReportingOptions(config.reporting); |
| this.hooks = new HookOptions(config.hooks); |
| this.check = config.check; // Pass raw config sub-object. |
| } |
| |
| /** |
| * true if verbose logging is required |
| * @property verbose |
| * @type Boolean |
| */ |
| /** |
| * instrumentation options |
| * @property instrumentation |
| * @type InstrumentOptions |
| */ |
| /** |
| * reporting options |
| * @property reporting |
| * @type ReportingOptions |
| */ |
| /** |
| * hook options |
| * @property hooks |
| * @type HookOptions |
| */ |
| |
| |
| function loadFile(file, overrides) { |
| var defaultConfigFile = path.resolve('.istanbul.yml'), |
| configObject; |
| |
| if (file) { |
| if (!existsSync(file)) { |
| throw new Error('Invalid configuration file specified:' + file); |
| } |
| } else { |
| if (existsSync(defaultConfigFile)) { |
| file = defaultConfigFile; |
| } |
| } |
| |
| if (file) { |
| if (overrides && overrides.verbose === true) { |
| console.error('Loading config: ' + file); |
| } |
| configObject = file.match(YML_PATTERN) ? |
| yaml.safeLoad(fs.readFileSync(file, 'utf8'), { filename: file }) : |
| require(path.resolve(file)); |
| } |
| |
| return new Configuration(configObject, overrides); |
| } |
| |
| function loadObject(obj, overrides) { |
| return new Configuration(obj, overrides); |
| } |
| |
| /** |
| * methods to load the configuration object. |
| * Usage |
| * ----- |
| * |
| * var config = require('istanbul').config, |
| * configObj = config.loadFile(); |
| * |
| * console.log(configObj.reporting.reports()); |
| * |
| * @class Config |
| * @module main |
| * @static |
| */ |
| module.exports = { |
| /** |
| * loads the specified configuration file with optional overrides. Throws |
| * when a file is specified and it is not found. |
| * @method loadFile |
| * @static |
| * @param {String} file the file to load. If falsy, the default config file, if present, is loaded. |
| * If not a default config is used. |
| * @param {Object} overrides - an object with override keys that are merged into the |
| * config object loaded |
| * @return {Configuration} the config object with overrides applied |
| */ |
| loadFile: loadFile, |
| /** |
| * loads the specified configuration object with optional overrides. |
| * @method loadObject |
| * @static |
| * @param {Object} obj the object to use as the base configuration. |
| * @param {Object} overrides - an object with override keys that are merged into the |
| * config object |
| * @return {Configuration} the config object with overrides applied |
| */ |
| loadObject: loadObject, |
| /** |
| * returns the default configuration object. Note that this is a plain object |
| * and not a `Configuration` instance. |
| * @method defaultConfig |
| * @static |
| * @return {Object} an object that represents the default config |
| */ |
| defaultConfig: defaultConfig |
| }; |