I am a student developing a microcontroller application that uses the Azure RTOS ThreadX, and I never used tests and want to start doing unit testing, integration testing, and automatic tests. I found out the Ceedling and Google Test frameworks, but I would like to know what the community and the ThreadX team uses or recommends to proceed with the tests.
My programming language is C, and I'm using a Cortex M0+.
ThreadX has a custom test suite, specifically written to test and certify the RTOS and middleware.
For your application code on top of the RTOS you can use the suites you mentioned.
I would recommend that in addition to unit-testing you use a static analysis tool or two, to identify other types of problems. During unit-testing and system testing it is also useful to measure code and branch coverage as well as use a profiler to verify performance.