karma.conf.js

// Karma configuration
// Generated on Mon Dec 24 2018 20:20:13 GMT+0300 (GMT+03:00)

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

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: ['lib/**/*'],

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

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

    karmaTypescriptConfig: {
      tsconfig: './tsconfig.json',
      compilerOptions: {
        module: 'commonjs',
      },
    },

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

    // 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: true,

    // 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: Boolean(isCI),

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