Jasmine vs Karma

Jasmine is a free, open-source framework for testing JavaScript code in browsers and Node.js. Tests use JavaScript’s describe/it structure and expect matchers. The jasmine-core package has no external dependencies, and the framework does not rely on other JavaScript frameworks. For Node, developers can install the package locally with npm and run it using npx jasmine; the standalone distribution runs browser specs without other tools or a web server. Jasmine supports ES modules, and its Node setup can also load CommonJS modules. The jasmine-browser-runner supports interactive browser runs and CI execution with headless Chrome or Sauce Labs. It can also connect to Sauce Labs or a user’s own Selenium Grid as a remote browser grid. Runners can be configured, reporters and matchers customized, and spec order randomized. The project lists JavaScript and TypeScript support, parallel execution and built-in mocks. Browser and Node compatibility follows a rolling window, so older platforms may receive best-effort support or be dropped in minor releases. The FAQ notes that the unmaintained karma-jasmine adapter depends on jasmine-core 4.x, which can limit access to newer Jasmine features. The project uses the MIT License and directs users to GitHub for issues and contributions.

Karma is a JavaScript test runner that starts a web server, connects browsers, runs tests, and reports results to developers. It can watch configured files and rerun tests when they change. Plugins connect frameworks such as Jasmine, Mocha, and QUnit, alongside preprocessors, reporters, and browser launchers. Documented launchers include Chrome, Firefox, Safari, PhantomJS, JSDOM, Opera, Internet Explorer, SauceLabs, and BrowserStack. A browser on another device on the same network, including a phone or tablet, can be captured by visiting the Karma server URL. Karma runs on Node.js and is distributed as an npm package; its installation guide recommends installing it locally in a project. Documentation includes integration guides for Travis CI, Jenkins, and Semaphore CI. The project describes Karma as primarily designed for low-level unit testing and points to Protractor for high-level testing. Karma is free and MIT-licensed, but deprecated: it accepts no new features or general bug fixes. Critical security fixes continue until 12 months after Angular CLI’s Web Test Runner support is marked stable.