karma.conf.js

// Karma configuration
// Generated on Tue Jul 31 2018 14:40:42 GMT-0400 (Eastern Daylight Time)

module.exports = function(config) {

  var webpackConfig = require('./webpack.config.test');
  process.env.CHROME_BIN = require('puppeteer').executablePath()

  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'],


    // list of files / patterns to load in the browser
    files: [
      'test/main.js',
      'build/diva.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/main.js': ['webpack', 'babel']
    },

    webpack: webpackConfig,

    babelPreprocessor: {
        options: {
            presets: ['@babel/preset-env']
        },
    },

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

    coverageIstanbulReporter: {
      reports: [ 'html', 'text-summary' ],
      fixWebpackSourcePaths: true
    },


    // 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,

    // Concurrency level
    // how many browser should be started simultaneous
    concurrency: Infinity
  })
}