[PATCH v4 0/3] KUnit tests for drm_format_helper

[José Expósito]

Hello everyone,

Following the style used in the selftest to KUnit series [1] and the AMD
series [2], the tests were moved to the "tests" folder.
In addition, to be consistent naming functions, I renamed the
kunit_suite and the test cases to use underscores as suggested in [3].

It is not clear yet whether we want to have one or multiple Kconfig
symbols and select which test should be built. However, refactoring from
one approach to the other is quite simple, so I think we should be fine
choosing the simpler option now and refactoring if required.

Thanks a lot,
José Expósito

[1] https://lore.kernel.org/dri-devel/20220615135824.15522-1-maira.canal@xxxxxx/T/
[2] https://lore.kernel.org/dri-devel/20220608010709.272962-1-maira.canal@xxxxxx/
[3] https://www.kernel.org/doc/html/latest/dev-tools/kunit/style.html

RFC -> v1: https://lore.kernel.org/dri-devel/20220530102017.471865-1-jose.exposito89@xxxxxxxxx/T/

 - Add .kunitconfig (Maxime Ripard)
 - Fix memory leak (Daniel Latypov)
 - Make config option generic (Javier Martinez Canillas):
   DRM_FORMAR_HELPER_TEST -> DRM_KUNIT_TEST
 - Remove DISABLE_STRUCTLEAK_PLUGIN (Daniel Latypov)

v1 -> v2: https://lore.kernel.org/dri-devel/20220606095516.938934-1-jose.exposito89@xxxxxxxxx/T/

 Thomas Zimmermann:
 - Add DRM_RECT_INIT() macro
 - Move tests to drivers/gpu/drm/kunit
 - Improve test documentation

v2 -> v3: https://lore.kernel.org/dri-devel/20220612161248.271590-1-jose.exposito89@xxxxxxxxx/T/

 - Use designated initializer in DRM_RECT_INIT (Jani Nikula)
 - Simplify the "conversion_buf_size" helper

v3 -> v4: https://lore.kernel.org/dri-devel/20220616183852.GA12343@elementary/T/

 - Move the source to the "tests" folder
 - Use "_" in kunit_suite and cases:
   https://www.kernel.org/doc/html/latest/dev-tools/kunit/style.html
 - Reviewed-by and Acked-by tags

José Expósito (3):
  drm/rect: Add DRM_RECT_INIT() macro
  drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_rgb332()
  drm/doc: Add KUnit documentation

 Documentation/gpu/drm-internals.rst           |  32 ++++
 drivers/gpu/drm/Kconfig                       |  16 ++
 drivers/gpu/drm/Makefile                      |   1 +
 drivers/gpu/drm/tests/.kunitconfig            |   3 +
 drivers/gpu/drm/tests/Makefile                |   3 +
 .../gpu/drm/tests/drm_format_helper_test.c    | 161 ++++++++++++++++++
 include/drm/drm_rect.h                        |  16 ++
 7 files changed, 232 insertions(+)
 create mode 100644 drivers/gpu/drm/tests/.kunitconfig
 create mode 100644 drivers/gpu/drm/tests/Makefile
 create mode 100644 drivers/gpu/drm/tests/drm_format_helper_test.c

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2.25.1