karma.conf.js

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/*.spec.js'
    ],

    webpack: {
      module: {
        loaders: [
          {
            test: /\.js$/,
            loaders: ['babel-loader']
          },

          {
            test: /\.json$/,
            loaders: ['json-loader']
          }
        ]
      }
    },

    webpackServer: {
      noInfo: true
    },

    // 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/*.spec.js': ['webpack']
    },

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

    // 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,

    // If browser does not capture in given timeout [ms], kill it
    captureTimeout: 60000,

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

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

    plugins: [
      require('karma-webpack'),
      require('karma-jasmine'),
      require('karma-phantomjs-launcher')
    ]
  })
}