karma.conf.js

// Karma configuration file, see link for more information
// https://karma-runner.github.io/0.13/config/configuration-file.html

const customLaunchers = require('./scripts/sauce-browsers').customLaunchers;

module.exports = function (config) {
  const configuration = {
    basePath: '',
    frameworks: ['jasmine', '@angular/cli'],
    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage-istanbul-reporter'),
      require('@angular/cli/plugins/karma'),
      require('karma-sauce-launcher')
    ],
    files: [
      {pattern: './scripts/test.ts', watched: false}
    ],
    preprocessors: {
      './scripts/test.ts': ['@angular/cli']
    },
    coverageIstanbulReporter: {
      reports: ['html', 'lcovonly'],
      fixWebpackSourcePaths: true
    },
    angularCli: {
      environment: 'dev'
    },
    reporters: config.angularCli && config.angularCli.codeCoverage
      ? ['dots', 'coverage-istanbul']
      : ['dots', 'kjhtml'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false,
    customLaunchers: {
      Chrome_travis_ci: {
        base: 'ChromeHeadless',
        flags: ['--disable-translate', '--disable-extensions']
      }
    },
    mime: {'text/x-typescript': ['ts', 'tsx']},
    client: {captureConsole: true, clearContext: false}
  };

  if (process.env.TRAVIS) {
    configuration.browsers = ['ChromeHeadless'];
  }

  config.set(configuration);
};