karma.conf.js

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

process.env.CHROME_BIN = require('puppeteer').executablePath()

module.exports = function (config) {
  config.set({
    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')
    ],
    client: {
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    files: [

    ],
    preprocessors: {

    },
    mime: {
      'text/x-typescript': ['ts', 'tsx']
    },
    coverageIstanbulReporter: {
      dir: require('path').join(__dirname, 'coverage'), reports: ['html', 'lcovonly'],
      fixWebpackSourcePaths: true
    },

    reporters: config.angularCli && config.angularCli.codeCoverage
      ? ['progress', 'coverage-istanbul']
      : ['progress', 'kjhtml'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['ChromeHeadlessNoSandbox'],
    customLaunchers: {
        ChromeHeadlessNoSandbox: {
            base: 'ChromeHeadless',
            flags: [
              '--no-sandbox', // required to run without privileges in docker
              '--user-data-dir=/tmp/chrome-test-profile',
              '--disable-web-security',
              '--disable-gpu',
              '--disable-background-networking',
              '--disable-default-apps',
              '--disable-extensions',
              '--disable-sync',
              '--disable-translate',
              '--headless',
              '--hide-scrollbars',
              '--metrics-recording-only',
              '--mute-audio',
              '--no-first-run',
              '--safebrowsing-disable-auto-update',
              '--ignore-certificate-errors',
              '--ignore-ssl-errors',
              '--ignore-certificate-errors-spki-list',
              '--remote-debugging-port=9222',
              '--remote-debugging-address=0.0.0.0',
              '--disable-dev-shm-usage',
              '--disable-setuid-sandbox',
              '--disable-namespace-sandbox',
              '--window-size=800x600',
              '--disable-background-timer-throttling',
              '--disable-renderer-backgrounding'
            ]
        }
    }
  });
};