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: ['mocha', '@angular-devkit/build-angular'],
        plugins: [
            require('karma-mocha'),
            require('karma-chrome-launcher'),
            require('karma-coverage-istanbul-reporter'),
            require('@angular-devkit/build-angular/plugins/karma')
        ],
        client: {
            mocha: {
                reporter: 'html',
                ui: 'bdd',
            }
        },
        coverageIstanbulReporter: {
            dir: require('path').join(__dirname, './coverage/playground'),
            reports: ['html', 'lcovonly', 'text-summary'],
            fixWebpackSourcePaths: true
        },
        reporters: ['progress'],
        port: 9876,
        colors: true,
        logLevel: config.LOG_INFO,
        autoWatch: true,
        browsers: ['Chrome'],
        singleRun: false,
        restartOnFileChange: true
    });
};