Neos is build with testing in mind 

#Behat tests for PHP

Our PHP code is tested with Behat, an open source Behavior-Driven Development framework for PHP. 

The Neos package contains a growing suite of Behat tests which you can take a look for inspirations on how to test your own code.

Read more about Behat tests for Neos in Contributing to Neos.

#Test­Café for React our admi­nis­tra­tion area

Our administration area is build with React and tested with TestCafè.