karma.conf.js

// Karma configuration file, see link for more information
// https://karma-runner.github.io/1.0/config/configuration-file.html

const { join } = require('path');
const { constants } = require('karma');

module.exports = () => {
  return {
    basePath: '',
    frameworks: ['jasmine', '@angular-devkit/build-angular'],
    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage-istanbul-reporter'),
      require('@angular-devkit/build-angular/plugins/karma'),
      require('karma-mocha-reporter'),
    ],
    client: {
      clearContext: false, // leave Jasmine Spec Runner output visible in browser
    },
    coverageIstanbulReporter: {
      dir: join(__dirname, '../../coverage'),
      reports: ['html', 'lcovonly'],
      fixWebpackSourcePaths: true,
    },
    reporters: process.env.TRAVIS ? ['mocha', 'kjhtml'] : ['mocha'],
    mochaReporter: {
      output: 'full',
    },
    customLaunchers: {
      Chrome_travis_ci: {
        base: 'Chrome',
        flags: [
          '--headless',
          '--disable-gpu',
          // Without a remote debugging port, Google Chrome exits immediately.
          '--remote-debugging-port=9222',
        ],
      },
    },
    browsers: process.env.TRAVIS ? ['Chrome_travis_ci'] : ['Chrome'],
    port: 9876,
    colors: true,
    logLevel: constants.LOG_INFO,
    autoWatch: true,
    singleRun: true,
  };
};