How to emulate Zephyr Timers for Test-Driven Development of state machines

[vChavezB]

Hello Zephyr community,

I am starting to delve in to Test-Driven Development (TDD) and I have developed c++ state machines with the QP CPP framework. I would like to use ZTEST to unit test my state machines but my code depends on the zephyr timer API.

In my tests I would like to go fast forward in time (emulation) so I can test if my state machines are triggered and check the functional behavior without having to wait.

Would it be possible to link my own timer implementation for the timer APIs (e.g. k_timer_start) for a posix board and how could I implement this ? are there any examples that emulate the timer API?

[yashi]

Try CONFIG_NATIVE_POSIX_SLOWDOWN_TO_REAL_TIME=n on either native_posix or native_posix_64.

If deselected, the process will run as fast as possible.

[vChavezB]

Thanks for the info, I will check it out :)