Getting ready

Drupal 8.1.0 introduced the ability to perform JavaScript browser tests. This is powered using PhantomJS (http://phantomjs.org/), which uses a browser emulator powered by the Mink PHP library (http://mink.behat.org/). In order to run the FunctionalJavascript test suite, you must have PhantomJS running.

To install PhantomJS, refer to the official installation instructions at http://phantomjs.org/download.html.