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-ajax', 'jasmine', 'intl-shim'],

    // list of files / patterns to load in the browser
    files: [
      'node_modules/jquery/dist/jquery.min.js',
      'dist/pathfora.js',
      'test/**/*.spec.js',
      'dist/pathfora.min.css',
      './node_modules/intl/locale-data/jsonp/en-GB.js',
      './node_modules/intl/locale-data/jsonp/en-US.js'
    ],

    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
      'src/rollup/pathfora.js': ['rollup'],
      'test/**/*.spec.js': ['rollup']
    },

    rollupPreprocessor: {
      plugins: [
        require('rollup-plugin-istanbul')({
          exclude: ['test/**/*.spec.js']
        })
      ],
      output: {
        format: 'iife',
        sourcemap: 'inline'
      }
    },

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

    coverageReporter: {
      dir: 'coverage/',
      reporters: [
        { type: 'html', subdir: 'html' },
        { type: 'lcovonly', subdir: '.' },
        { type: 'json', subdir: '.' }
      ]
    },

    // 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: ['ChromeHeadless'],

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