karma.conf.js

// Karma configuration
// Generated on Mon Oct 26 2015 15:08:26 GMT-0600 (MDT)

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: [ 'browserify', 'mocha' ],

    // list of files / patterns to load in the browser
    files: [
      'lib/__tests__/client.test.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: {
      'lib/__tests__/**/*.js': [ 'browserify' ]
    },

    browserify: {
      debug: true
    },

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

    // 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_WARN,

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

    customLaunchers: {
      ChromeHeadless: {
        base: 'Chrome',
        flags: [ '--headless', '--disable-gpu', '--remote-debugging-port=9222' ]
      }
    },

    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: process.env.CONTINUOUS_INTEGRATION
      ? [ 'ChromeHeadless', 'Firefox' ]
      : [ 'Chrome', 'Firefox', 'Safari' ],

    captureTimeout: 120000,
    browserNoActivityTimeout: 120000,

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

    // Concurrency level
    // how many browser should be started simultanous
    concurrency: 5
  })
}