karma.conf.js

/**
 * @license
 * Copyright 2018 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */

const karmaTypescriptConfig = {
  tsconfig: 'tsconfig.json',
  // Disable coverage reports and instrumentation by default for tests
  coverageOptions: {instrumentation: false},
  reports: {}
};

// Enable coverage reports and instrumentation under KARMA_COVERAGE=1 env
const coverageEnabled = !!process.env.KARMA_COVERAGE;
if (coverageEnabled) {
  karmaTypescriptConfig.coverageOptions.instrumentation = true;
  karmaTypescriptConfig.coverageOptions.exclude = /_test\.ts$/;
  karmaTypescriptConfig.reports = {html: 'coverage', 'text-summary': ''};
}

module.exports = function(config) {
  config.set({
    frameworks: ['jasmine', 'karma-typescript'],
    files: [{pattern: 'src/**/*.ts'}],
    preprocessors: {
      '**/*.ts': ['karma-typescript'],
    },
    karmaTypescriptConfig,
    reporters: ['progress', 'karma-typescript'],
    browsers: ['Chrome'],
    browserStack: {
      username: process.env.BROWSERSTACK_USERNAME,
      accessKey: process.env.BROWSERSTACK_KEY
    },
    reportSlowerThan: 500,
    browserNoActivityTimeout: 30000,
    customLaunchers: {
      bs_chrome_mac: {
        base: 'BrowserStack',
        browser: 'chrome',
        browser_version: 'latest',
        os: 'OS X',
        os_version: 'High Sierra'
      },
      bs_firefox_mac: {
        base: 'BrowserStack',
        browser: 'firefox',
        // TODO(cais): Change to latest after browser stack infrastructure
        // stabilizes. https://github.com/tensorflow/tfjs/issues/1620
        browser_version: '66.0',
        os: 'OS X',
        os_version: 'High Sierra'
      },
      chrome_with_swift_shader: {
        base: 'Chrome',
        flags: ['--blacklist-accelerated-compositing', '--blacklist-webgl']
      }
    },
    client: {
      jasmine: {
        random: false
      },
      args: ['--grep', config.grep || '']
    }
  });
};