karma.conf.js

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

module.exports = function (config) {
  config.set({
    basePath: '',
    browserNoActivityTimeout: 30000,
	browserDisconnectTimeout: 10000,
    browserDisconnectTolerance: 3,
    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-junit-reporter')
    ],
    client: {
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    coverageIstanbulReporter: {
      dir: require('path').join(__dirname, 'coverage'),
      reports: ['html', 'lcovonly'],
      fixWebpackSourcePaths: true
    },
    reporters: config.angularCli && config.angularCli.codeCoverage ? ['progress', 'coverage-istanbul'] : ['progress', 'kjhtml', 'dots', 'junit'],
    junitReporter: {
      outputDir: 'unittests',
      outputFile: 'test-results.xml'
    },
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['ChromeDebugging'],
    customLaunchers: {
      ChromeDebugging: {
        base: 'Chrome',
        flags: ['--remote-debugging-port=9333']
      },      
      ChromiumNoSandbox: {
        base: 'ChromiumHeadless',
        flags: ['--no-sandbox', '--headless', '--disable-gpu', '--disable-translate', '--disable-extensions']
      }
    },
    singleRun: false
  });
};