Basically, this is used for e2e tests.
This e2e test is done using CodeceptJS https://codecept.io/
e2e test uses a number of open source projects to work properly:
e2e test requires Node.js v4+ to run.
Install the dependencies and devDependencies.
$ cd pizza-ui-tests
$ npm install -d
This is using WebDriverIO helper which wraps webdriverio library to manipulate browser, hence Selenium WebDriver needs to be called
$ webdriver-manager update
$ webdriver start
To run all e2e tests just simply type
$ yarn start