[igt-dev] [PATCH i-g-t 6/8] lib/igt_kmod: place KUnit tests on a subtest

[Mauro Carvalho Chehab]

On Tue, 06 Jun 2023 16:22:21 +0200
Janusz Krzysztofik <janusz.krzysztofik at linux.intel.com> wrote:

> > We can use whatever other name, provided that the output of
> > --list-subtests will be identical to the dynamic subtest. If not,
> > build will fail when checking for documentation inconsistencies.   
> 
> AFAICU, that checking process compares subtest names found in a documentation, 
> here the source code, as pointed by you in one of your previouse answers as 
> the source of the documentation, against --list output.  But that sounds 
> weird.  What a sophisticated code parser must be used to resolve subtest names 
> potentially provided via expressions?  Another compiler?
> Or is there another source of documentation, which I already asked you for a 
> reference to, and you didn't clearly answered yet, used by the build process 
> for that checking?

There's no other source of documentation. The documentation toolset
has a --check tool that calls the binaries using "--list" parameter,
comparing them with the documentation inside the source code.

So, for tests/drm_mm.c file, the documentation is on its source:

	/**
	 * TEST: drm mm
	 * Description: Basic sanity check of DRM's range manager (struct drm_mm)
	 * Feature: mapping
	 * Run type: FULL
	 *
	 * SUBTEST: all-tests
	 *
	 * SUBTEST: all-tests at align
	 * Category: Infrastructure
	 * Description: drm_mm range manager SW validation
	 * Functionality: DRM memory mangemnt
	 * Test category: GEM_Legacy
	...

It will run build/tests/drm_mm --list in order to compare "SUBTEST"
the fields. The ones with "@" are dynamic subtests and are currently
ignored, as --list is currently not capable of reporting dynamic 
subtests.

Now, it is possible to change from "all-tests" to something else, but
such patch also needs to change it inside tests/drm_mm.c.

Regards,
Mauro