text: 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: [
        'tests/**/test-*.js'
      ],
  
  
      // list of files to exclude
      exclude: [
      ],
  
      webpack: {
        output: {
          libraryTarget: 'umd'
        },
        module: {
          loaders: [
            {
              test: /\.css$/,
              loaders: ['style', 'css', 'postcss'],
              exclude: [/node_modules/]
            },
            {
              test: /\.js$/,
              loaders: ['babel'],
              exclude: [/node_modules/]
            }
          ]
        },
        postcss: function () {
          return [
            require('postcss-nested')
          ]
        }
      },
  
      webpackMiddleware: {
        // webpack-dev-middleware configuration
        // i. e.
        noInfo: true
      },
  
  
      // preprocess matching files before serving them to the browser
      // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
      preprocessors: {
        'src/**/*.js': ['webpack'],
        'tests/**/*.js': ['webpack']
      },
      babelPreprocessor: {
        options: {
          presets: ['es2015'],
          sourceMap: 'inline'
        },
        filename: function (file) {
          return file.originalPath.replace(/\.js$/, '.es5.js')
        },
        sourceFileName: function (file) {
          return file.originalPath
        }
      },
  
  
      // test results reporter to use
      // possible values: 'dots', 'progress'
      // available reporters: https://npmjs.org/browse/keyword/karma-reporter
      reporters: ['nyan'],
  
  
      // 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: ['PhantomJS'],
  
  
      // 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: Infinity,
    })
  }
  