karma.conf.js

var process = require("process");

var travis = process.env.TRAVIS;

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: ["jasmine"],

        // list of files / patterns to load in the browser
        files: [
            "./test/tests.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: {
            "test/*tests.js": ["webpack", "sourcemap"]
        },

        webpack: require("./webpack.config.js"),
        webpackMiddleware: {
            stats: {
                chunks: false
            }
        },

        // test results reporter to use
        // possible values: "dots", "progress"
        // available reporters: https://npmjs.org/browse/keyword/karma-reporter
        reporters: ["dots", "jasmine-diff", "coverage", "kjhtml"],

        // 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: true,

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

        // 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: travis ? 4 : undefined,

        coverageReporter: {
            type: "json",
            dir: "coverage/"
        },

        jasmineDiffReporter: {
            multiline: true
        }
    });

    if (travis) {
        var customLaunchers = {
            // see https://www.browserstack.com/list-of-browsers-and-platforms?product=automate
            chrome_latest: {
                base: "BrowserStack",
                browser: "Chrome",
                os: "Windows",
                os_version: "10"
            },
            firefox_latest: {
                base: "BrowserStack",
                browser: "firefox",
                os: "Windows",
                os_version: "10"
            },
            opera_latest: {
                base: "BrowserStack",
                browser: "opera",
                os: "Windows",
                os_version: "7"
            },
            ie_latest: {
                base: "BrowserStack",
                os: "Windows",
                os_version: "8.1",
                browser: "ie",
                browser_version: "11.0"
            },
            ie_10: {
                base: "BrowserStack",
                os: "Windows",
                os_version: "8",
                browser: "ie",
                browser_version: "10.0"
            },
            edge_latest: {
                base: "BrowserStack",
                browser: "Edge",
                os: "Windows",
                os_version: "10"
            },
            safari_latest: {
                base: "BrowserStack",
                browser: "safari",
                os: "OS X",
                os_version: "El Capitan"
            },
            ios_latest: {
                base: "BrowserStack",
                browser: "iPhone",
                device: "iPhone 6S",
                os: "ios",
                os_version: "9.1"
            },
            ios_8: {
                base: "BrowserStack",
                browser: "iPhone",
                device: "iPhone 6",
                os: "ios",
                os_version: "8.3"
            },
            ios_7: {
                base: "BrowserStack",
                os: "ios",
                os_version: "7.0",
                browser: "iphone",
                device: "iPhone 5S"
            },
            ios_6: {
                base: "BrowserStack",
                os: "ios",
                os_version: "6.0",
                browser: "iphone",
                device: "iPhone 5"
            },
            ios_51: { // oldest  with web worker support
                base: "BrowserStack",
                os: "ios",
                os_version: "5.1",
                browser: "iphone",
                device: "iPhone 4S"
            },
            /*android_5: { Not working at the moment, investigate
                base: "BrowserStack",
                browser: "android",
                device: "Google Nexus 5",
                os: "android",
                os_version: "5.0"
            },*/
            android_44_chrome: {
                base: "BrowserStack",
                browser: "android",
                device: "Samsung Galaxy S5",
                os: "android",
                os_version: "4.4"
            }
        };

        config.set({
            customLaunchers: customLaunchers,
            browserStack: {
                project: "Parallel.ES Tests",
                username: process.env.BROWSER_STACK_USERNAME,
                accessKey: process.env.BROWSER_STACK_ACCESS_KEY,
                startTunnel: false,
                tunnelIdentifier: process.env.BROWSERSTACK_LOCAL_IDENTIFIER,
                build: process.env.TRAVIS_BUILD_NUMBER + " - "  + process.env.TRAVIS_BRANCH
            },
            browsers: Object.keys(customLaunchers),
            captureTimeout: 300000,
            browserNoActivityTimeout: 300000,
            browserDisconnectTimeout: 300000,
            browserDisconnectTolerance: 3,
            reporters: ["dots", "jasmine-diff", "coverage"],
            singleRun: true
        });
    }
};