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/cli'],
    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage-istanbul-reporter'),
      require('@angular/cli/plugins/karma')
    ],
    client:{
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    coverageIstanbulReporter: {
      reports: [ 'html', 'lcovonly' ],
      combineBrowserReports: true,
      fixWebpackSourcePaths: true,
      skipFilesWithNoCoverage: true,
      // enforce percentage thresholds
      // anything under these percentages will cause karma to fail with an exit code of 1 if not running in watch mode
      thresholds: {
        emitWarning: false, // set to `true` to not fail the test command when thresholds are not met
        // thresholds for all files
        global: {
          statements: 80,
          lines: 80,
          branches: 80,
          functions: 80
        },
        // thresholds per file
        each: {
          statements: 80,
          lines: 80,
          branches: 80,
          functions: 80
        }
    },
        verbose: true, // output config used by istanbul for debugging
      'report-config': {
        // all options available at: https://github.com/istanbuljs/istanbuljs/blob/aae256fb8b9a3d19414dcf069c592e88712c32c6/packages/istanbul-reports/lib/html/index.js#L135-L137
        html: {
          // outputs the report in ./coverage/html
          subdir: 'html'
        }}
    },
    angularCli: {
      environment: 'dev'
    },
    reporters: ['progress', 'kjhtml', 'coverage-istanbul'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false,
  });
};