Unit testing framework

At the “homerepo” of the mbed OS: https://github.com/ARMmbed/mbed-os there is mentioned and a link to cpputest unit testing tool: https://github.com/ARMmbed/cpputest. The link though returns “404”!
I can find an instance of a cpputest repo from GitHub but what is the status of the unit test framework - is it still under work or is the link just misplaced?

Just noticed that somebody beat me by a day: Greentea quickstart and CppUTest


I provided an answer here: Greentea quickstart and CppUTest