karma.conf.js

// Karma configuration Generated on Tue Nov 08 2016 09:18:53 GMT+0100 (W. Europe
// Standard Time)

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: [
      'mocha', 'chai'
    ],

    // list of files / patterns to load in the browser
    files: ['src/test/test-main.js'],

    plugins: [
      'karma-mocha', 'karma-chai', 'karma-chrome-launcher', 'karma-coverage', 'karma-webpack'
    ],

    // 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: {
      'src/test/test-main.js': ['webpack']
    },

    webpack: {
      module: {
        loaders : [
          {
            test: /\.(js|jsx)$/,
            exclude: /(bower_components|node_modules)/,
            loader: 'babel',
            query: {
              presets: [
                "latest", "react"
              ],
              "plugins": [["__coverage__", { "ignore": "test/" }]]
            }
          }
        ]
      }
    },

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

    coverageReporter: {
      type: 'html',
      dir: '.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: ['Chrome'],

    // 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: Infinity
  })
}