karma.conf.js

'use strict'

const path = require('path')

module.exports = function(config) {
  config.set({
    basePath: '',
    frameworks: ['mocha', 'chai-spies', 'chai'],

    browsers: [ process.env.CI ? 'ChromiumHeadless_without_security' : 'ChromeHeadless' ],
    customLaunchers: {
      ChromiumHeadless_without_security: {
        base: 'ChromiumHeadless',
        flags: [
          '--no-sandbox',
          '--disable-setuid-sandbox',
        ],
      },
    },
    concurrency: 1,
    browserDisconnectTimeout: 10000,
    browserNoActivityTimeout: 10000,
    browserDisconnectTolerance: 16,

    files: [
      'test.js'
    ],
    exclude: [],

    preprocessors: {
      'test.js': ['webpack']
    },

    webpack: {
      mode: 'development',
      resolve: {
        extensions: ['.js', '.json']
      },
      module: {
      },
      node: {
        fs: 'empty',
      },
    },
    webpackMiddleware: {
      noInfo: true
    },

    reporters: ['mocha'],

    port: 9876,
    colors: true,
    logLevel: config.LOG_LOG,

    autoWatch: true,
  })
}