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: '',
    frameworks: ['jasmine', '@angular-devkit/build-angular'],
    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage'),
      require('@angular-devkit/build-angular/plugins/karma')
    ],
    proxies: {
      '/assets/': '/base/src/assets/',
      'assets/': '/base/src/assets/'
    },
    mime: {
      'text/x-typescript': ['ts', 'tsx']
    },
    client: {
      jasmine: {
        // you can add configuration options for Jasmine here
        // the possible options are listed at https://jasmine.github.io/api/edge/Configuration.html
        // for example, you can disable the random execution with `random: false`
        // or set a specific seed with `seed: 4321`
      },
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    jasmineHtmlReporter: {
      suppressAll: true // removes the duplicated traces
    },
    coverageReporter: {
      dir: require('path').join(__dirname, './coverage'),
      reporters: [
        { type: 'html', subdir: 'report-html' },
        { type: 'lcovonly', subdir: '.', file: 'lcov.info' }
      ],
      fixWebpackSourcePaths: true
    },
    customLaunchers: {
      ChromeHeadless: {
        base: 'Chrome',
        flags: [
          '--headless',
          '--disable-gpu',
          '--no-sandbox',
          // Without a remote debugging port, Google Chrome exits immediately.
          '--remote-debugging-port=9222'
        ]
      }
    },
    reporters: ['progress', 'coverage'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_DEBUG,
    autoWatch: true,
    browsers: ['ChromeHeadless'],
    singleRun: true,
    restartOnFileChange: true
  });
};