karma.conf.js

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

module.exports = function (config) {
  config.set({

    // base path that will be used to resolve all patterns (eg. files, exclude)
    basePath: '',


    // frameworks to use
    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
    frameworks: ['jasmine', 'karma-typescript'],

    // list of files / patterns to load in the browser
    files: [
      "src/lib/**/*.ts",
      "tests/**/*.spec.ts"
    ],


    // list of files / patterns to exclude
    exclude: [
      "node_modules"
    ],


    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
      "src/lib/**/*.ts": ["karma-typescript"],
      "tests/**/*.spec.ts": ["karma-typescript"],
    },


    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    reporters: ['progress', 'karma-typescript'],

    karmaTypescriptConfig: {
      include: ["./src/lib/**/*.ts", "./tests/**/*.spec.ts"],
      tsconfig: "./tsconfig.json",

      reports: {
        "html": "coverage",
        "lcovonly": {
          directory: './coverage',
          filename: '../lcov.dat'
        }
      },
    },


    // web server port
    port: 9876,


    // enable / disable colors in the output (reporters and logs)
    colors: true,


    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    logLevel: config.LOG_INFO,


    // enable / disable watching file and executing tests whenever any file changes
    autoWatch: false,


    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: ['ChromeHeadless'],


    // Continuous Integration mode
    // if true, Karma captures browsers, runs the tests and exits
    singleRun: true,

    // Concurrency level
    // how many browser should be started simultaneous
    concurrency: Infinity,

    // Custom launchers
    customLaunchers: {
      ChromeHeadlessNoSandbox: {
        base: 'ChromeHeadless',
        flags: ['--no-sandbox']
      }
    },


    plugins: [
      'karma-jasmine',
      'karma-typescript',
      'karma-chrome-launcher',
    ],
  })
}