In an article on the Hackster.io site explains in detail how he made a nice visualization of unit test results. Pretty cool what you can do with a raspberry pi, some LEDS and a couple of scripts.

I wanted to create a desktop gadget to visualize the progress of unit tests run via PHPUnit.I've named this project PHPUnicorn (by combining "PHPUnit" with "Unicorn pHAT").

https://www.hackster.io/colinodell/phpunicorn-visualizing-phpunit-tests-896208