karma.conf.js

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-coverage'),
      require('@angular-devkit/build-angular/plugins/karma'),
      require('karma-spec-reporter')
    ],
    client: {
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    reporters: ['spec'],
    specReporter: {
      suppressSkipped: true
    },
    port: 9876,
    colors: true,
    logLevel: constants.LOG_INFO,
    autoWatch: true,
    browserNoActivityTimeout: 300000,
    browserSocketTimeout: 120000,
    browserDisconnectTimeout: 5000,
    captureTimeout: 120000,
    browsers: ['ChromeHeadlessCI'],
    customLaunchers: {
      ChromeHeadlessCI: {
        base: 'ChromeHeadless',
        flags: [
          '--no-sandbox',
          '--js-flags=--max-old-space-size=8196',
          '--disable-web-security'
        ]
      }
    },
    singleRun: true,
  };
};