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-coverage'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('@angular-devkit/build-angular/plugins/karma'),
    ],
    client: {
      clearContext: false, // leave Jasmine Spec Runner output visible in browser
    },
    reporters: ['progress', 'kjhtml', 'coverage'],
    coverageReporter: {
      // specify a common output directory
      dir: require('path').join(__dirname, '../../coverage/observable-webworker'),
      reporters: [
        // reporters not supporting the `file` property
        { type: 'html', subdir: 'report-html' },
        // { type: 'lcov', subdir: 'report-lcov' },
        // reporters supporting the `file` property, use `subdir` to directly
        // output them in the `dir` directory
        // { type: 'cobertura', subdir: '.', file: 'cobertura.txt' },
        { type: 'lcovonly', subdir: '.', file: 'lcov.info' },
        // { type: 'teamcity', subdir: '.', file: 'teamcity.txt' },
        // { type: 'text', subdir: '.', file: 'text.txt' },
        { type: 'text-summary', subdir: '.', file: 'text-summary.txt' },
      ],
    },
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['ChromeHeadlessNoSandbox'],
    customLaunchers: {
      ChromeHeadlessNoSandbox: {
        base: 'ChromeHeadless',
        flags: ['--no-sandbox'],
      },
    },
    singleRun: false,
    restartOnFileChange: true,
  });
};