karma.conf.js

module.exports = function (config) {
  var cfg = {
    // 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: ['jquery-1.11.0', 'jasmine-jquery', 'jasmine'],

    // list of files / patterns to load in the browser
    files: [
      'scripts/*.js',
      'tests/libs/mixins.js',
      'tests/spec/**/*Spec.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: {
      'scripts/*.js': ['coverage']
    },

    coverageReporter: {
      type: 'lcov',
      dir: 'tests/coverage',
      subdir: '.'
    },

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

    plugins: [
      'karma-chrome-launcher',
      'karma-firefox-launcher',
      'karma-jquery',
      'karma-jasmine-jquery',
      'karma-jasmine',
      'karma-coverage'
    ],

    // 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', 'FirefoxHeadless'],

    // Or if you want to see the browser interactions
    // browsers: ['Chrome', 'Firefox'],

    customLaunchers: {
      ChromeHeadlessNoSandbox: {
        base: 'ChromeHeadless',
        flags: ['--no-sandbox']
      }
    },

    // 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: 1
  };

  // We want to run specific browsers if we are on the travis env
  if (process.env.TRAVIS) {
    cfg.browsers = ['ChromeHeadlessNoSandbox', 'FirefoxHeadless'];

    cfg.client = {
      captureConsole: false
    };
  }

  config.set(cfg);
};