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', 'sinon-chai'],
          client: {
              chai: {
                  includeStack: true
              }
          },
          // list of files / patterns to load in the browser
          files: [
              'dist/**/*.test.js',
              'dist/**/*.test.css'
          ],
          // list of files / patterns to exclude
          exclude: [],
          // preprocess matching files before serving them to the browser
          // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
          preprocessors: {},
          // 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,
          // start these browsers
          // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
          browsers: ['ChromeHeadless'],
          // Continuous Integration mode
          // if true, Karma captures browsers, runs the tests and exits
          singleRun: false,
          // Concurrency level
          // how many browser should be started simultaneous
          concurrency: Infinity
      })
  };