karma.conf.js

// Karma configuration
// Generated on Tue Jul 18 2017 12:17:16 GMT-0700 (PDT)

const pkgJson = require('./package.json');
const webpack = require('webpack');
const path = require('path');

module.exports = function(config) {
	config.set({
		// base path that will be used to resolve all patterns (eg. files, exclude)
		basePath: '',

		// frameworks to use
		// available frameworks: https://npmjs.org/browse/keyword/karma-adapter
		frameworks: ['mocha', 'sinon', 'should'],

		// list of files / patterns to load in the browser
		files: [
      'tests/unit/**/*.js'
    ],

		// list of files to exclude
		exclude: [],

		// preprocess matching files before serving them to the browser
		// available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
		preprocessors: {
		  '**/*.js': ['webpack', 'sourcemap']
		},

		// test results reporter to use
		// possible values: 'dots', 'progress'
		// available reporters: https://npmjs.org/browse/keyword/karma-reporter
		reporters: ['mocha', 'coverage-istanbul'],

		coverageIstanbulReporter: {
			reports: ['lcov', 'text-summary'],
			fixWebpackSourcePaths: true
		},

		webpack: {
      mode: 'development',
			devtool: 'inline-source-map',
			module: {
				rules: [
					// instrument only testing sources with Istanbul
					{
						test: /\.js$/,
						include: path.resolve('src/'),
						exclude: path.resolve(__dirname, 'node_modules'),
						use: [
							{
								loader: 'istanbul-instrumenter-loader',
								options: { esModules: true }
							}
						]
					}
				]
      },
      plugins: [
        new webpack.DefinePlugin({
          __VERSION__: JSON.stringify(pkgJson.version),
          __USE_SUBTITLES__: JSON.stringify(true),
          __USE_ALT_AUDIO__: JSON.stringify(true),
          __USE_EME_DRM__: JSON.stringify(true)
        })
      ]
		},

		// web server port
		port: 9876,

		// enable / disable colors in the output (reporters and logs)
		colors: true,

		// level of logging
		// possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
		logLevel: config.LOG_INFO,

		// enable / disable watching file and executing tests whenever any file changes
		autoWatch: false,

		// start these browsers
		// available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
		browsers: ['ChromeHeadless'],

		// Continuous Integration mode
		// if true, Karma captures browsers, runs the tests and exits
		singleRun: true,

		// Concurrency level
		// how many browser should be started simultaneous
		concurrency: Infinity
	});
};