Nightwatch.js
End-to-end testing framework in Node.js & using the Webdriver API
...It uses the WebDriver API to drive browsers, enabling commands and assertions on DOM elements.
Nightwatch.js is used for end-to-end testing of web applications and websites, as well as for Node.js unit and integration testing. It offers a clean yet powerful syntax for quick and easy writing of tests, a built-in command-line test runner, continuous integration and more. It's also easy to extend so you can implement custom commands and assertions.