karma.conf.js

module.exports = function (config) {
  config.set({
    // base path, that will be used to resolve files and exclude
    basePath: '.',

    frameworks: [
      'mocha',
      'chai',
      'chai-as-promised',
      'fixture',
      'jquery-1.8.3',
      'jquery-chai'
    ],

    // list of files / patterns to load in the browser
    files: [ 'spec/*_spec.js', 'spec/fixtures/*' ],

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

    preprocessors: {
      '**/*.html'   : ['html2js'],
      '**/*.json'   : ['json_fixtures'],
      'src/*.js' : ['webpack'],
      'spec/**_spec.js': ['webpack']
    },

    jsonFixturesPreprocessor: {
      variableName: '__json__'
    },

    // use dots reporter, as travis terminal does not support escaping sequences
    // possible values: 'dots', 'progress'
    // CLI --reporters progress
    reporters: ['dots'],

    // web server port
    // CLI --port 9876
    port: 9876,

    // enable / disable colors in the output (reporters and logs)
    // CLI --colors --no-colors
    colors: true,

    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    // CLI --log-level debug
    logLevel: config.LOG_INFO,

    // enable / disable watching file and executing tests whenever any file changes
    // CLI --auto-watch --no-auto-watch
    autoWatch: true,

    // Start these browsers, currently available:
    // - Chrome
    // - ChromeCanary
    // - Firefox
    // - Opera
    // - Safari (only Mac)
    // - PhantomJS
    // - IE (only Windows)
    // CLI --browsers Chrome,Firefox,Safari
    browsers: [process.env.CIRCLCI ? 'PhantomJS' : 'PhantomJS_custom'],

    // you can define custom flags
    customLaunchers: {
      'PhantomJS_custom': {
        base: 'PhantomJS',
        options: {
          windowName: 'my-window',
          settings: {
            webSecurityEnabled: false
          },
        },
        flags: ['--load-images=true'],
        debug: true
      }
    },

    // If browser does not capture in given timeout [ms], kill it
    // CLI --capture-timeout 5000
    captureTimeout: 20000,

    // Auto run tests on start (when browsers are captured) and exit
    // CLI --single-run --no-single-run
    singleRun: false,

    // report which specs are slower than 500ms
    // CLI --report-slower-than 500
    reportSlowerThan: 500,

    plugins: [
      'karma-chai',
      'karma-chai-as-promised',
      'karma-jquery',
      'karma-fixture',
      'karma-html2js-preprocessor',
      'karma-json-fixtures-preprocessor',
      'karma-mocha',
      'karma-phantomjs-launcher',
      'karma-webpack',
      'karma-jquery-chai'
    ]
  })
}