karma.conf.js

// Karma configuration

var portRangeStart = process.env['CORE3_PORT_RANGE_START'];
var karmaPort = portRangeStart ? parseInt(portRangeStart) + 3: 9876;

module.exports = function (config) {
    var karmaConfig = {

        // 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'],


        // list of files / patterns to load in the browser
        files: [
            'dist/test.bundle.js'
        ],


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

        client: {
            mocha: {
                reporter: 'html', // change Karma's debug.html to the mocha web reporter
                ui: 'bdd'
            }
        },

        // preprocess matching files before serving them to the browser
        // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
        preprocessors: {
        },


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


        // web server port
        port: karmaPort,


        // 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: true,


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


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

        // Concurrency level
        // how many browser should be started simultaneous
        concurrency: Infinity,

        customLaunchers: {
            chrome_travis_ci: {
                base: 'Chrome',
                flags: ['--no-sandbox']
            }
        }
    }

    if (process.env.TRAVIS) {
        karmaConfig.browsers = ['chrome_travis_ci', 'Firefox'];
    }

    config.set(karmaConfig);
}