Compiling with SDK on desktop for unit testing

RE: Compiling with SDK on desktop for unit testing

Krzysztof Chruscinski — Thu, 28 May 2020 07:15:27 GMT

Hi,

we also use unity but we modified it to inject special defines to allow mocking static inlines. Unfortunately, it is quite coupled with test framework so I won't be able to share it with you.

You can take a look at how we approached this issue in nRF Connect SDK: http://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_unity_testing.html

Basically, we are first preprocessing the headers to replace or static inline functions with standard function declarations and that is passed to mock generator. I think this may work for you.

Here is the script: https://github.com/nrfconnect/sdk-nrf/blob/master/scripts/unity/header_prepare.py

Note that script contains conversions specific to zephyr (syscalls removal).

RE: Compiling with SDK on desktop for unit testing

Nathan O. — Tue, 19 May 2020 13:10:11 GMT

The thing here is that I do not want to actually execute any of the driver code :

If I have a module that uses the RTC for example by calling the nrf_drv_rtc driver, I would like to be able to mock the driver part and test only my module.

The problem I have here is that the header file of the driver goes on including a lot of target-specific header files.

The reason I'm asking this post here is that I have found in the nrf.h file the following section that make me think that running on Host platform should be doable :

#if defined(_WIN32)
    /* Do not include nrf specific files when building for PC host */
#elif defined(__unix)
    /* Do not include nrf specific files when building for PC host */
#elif defined(__APPLE__)
    /* Do not include nrf specific files when building for PC host */
#else

RE: Compiling with SDK on desktop for unit testing

awneil — Tue, 19 May 2020 10:49:18 GMT

Surely, you would get exactly the same issues with trying to build any microcontroller code in a desktop native compiler ?

[quote userid="18189" url="~/f/nordic-q-a/61562/compiling-with-sdk-on-desktop-for-unit-testing"]the Unity testing framework (using Ceedling)[/quote]

So don't they give you any guidance on how to go about abstracting the Target specifics?

Perhaps it'd be simpler to keep doing the cross-compilation, and run in a simulator such as QEMU ... ?