karmaConfig.js

const baseConfig = {
  frameworks: ['browserify', 'jasmine'],
  files: [
    {pattern: 'src/**/*.js', included: false, served: false},
    'test/**/test*.js'
  ],
  preprocessors: {
    'src/**/*.js': 'browserify',
    'test/**/*.js': 'browserify',
  },
  browserify: {
    transform: [
      'babelify',
    ]
  },
  concurrency: 5,
  captureTimeout: 90000,
  browserConnectTimeout: 3000,
  browserNoActivityTimeout: 15000,
};

const stringConfig = JSON.stringify(baseConfig);

var headlessConfig = JSON.parse(stringConfig);
headlessConfig.browsers = ['PhantomJS'];

var localConfig = JSON.parse(stringConfig);
localConfig.browsers = ['Chrome', 'Firefox'];

var fullConfig = JSON.parse(stringConfig);
fullConfig.reporters = ['progress', 'saucelabs'];
fullConfig.saucelabs = { testName: 'Drift Tests' }
fullConfig.browsers = [
  'sl_chrome',
  'sl_safari_9',
  'sl_safari_8',
  'sl_firefox_42',
  'sl_firefox_41',
  'sl_ie_11',
  'sl_ie_10',
  'sl_ios_9',
  'sl_ios_8',
  'sl_android_5',
  'sl_android_4',
];
fullConfig.customLaunchers = {
  sl_chrome: { base: 'SauceLabs', browserName: 'Chrome' },
  sl_safari_9: { base: 'SauceLabs', browserName: 'Safari', version: 9 },
  sl_safari_8: { base: 'SauceLabs', browserName: 'Safari', version: 8 },
  sl_firefox_42: { base: 'SauceLabs', browserName: 'Firefox', version: 42 },
  sl_firefox_41: { base: 'SauceLabs', browserName: 'Firefox', version: 41 },
  sl_ie_11: { base: 'SauceLabs', browserName: 'Internet Explorer', version: '11' },
  sl_ie_10: { base: 'SauceLabs', browserName: 'Internet Explorer', version: '10' },
  sl_ios_9: { base: 'SauceLabs', browserName: 'iPhone', version: '9.2' },
  sl_ios_8: { base: 'SauceLabs', browserName: 'iPhone', version: '8.4' },
  sl_android_5: { base: 'SauceLabs', browserName: 'Android', version: '5.1' },
  sl_android_4: { base: 'SauceLabs', browserName: 'Android', version: '4.4' },
};

exports.headless = headlessConfig;
exports.local = localConfig;
exports.full = fullConfig;