On Wed, Mar 22, 2023 at 11:06:57AM -0300, Arthur Grillo wrote:
> Insert test for the drm_rect_intersect() function, it also create a
> helper for comparing drm_rects more easily.
>
> Signed-off-by: Arthur Grillo <arthurgri...@riseup.net>
> ---
> drivers/gpu/drm/tests/drm_rect_test.c | 30 +++++++++++++++++++++++++++
> 1 file changed, 30 insertions(+)
>
> diff --git a/drivers/gpu/drm/tests/drm_rect_test.c
> b/drivers/gpu/drm/tests/drm_rect_test.c
> index e9809ea32696..f700984f70a8 100644
> --- a/drivers/gpu/drm/tests/drm_rect_test.c
> +++ b/drivers/gpu/drm/tests/drm_rect_test.c
> @@ -9,6 +9,15 @@
>
> #include <drm/drm_rect.h>
>
> +static void drm_rect_compare(struct kunit *test, const struct drm_rect *r,
> + const struct drm_rect *expected)
> +{
> + KUNIT_EXPECT_EQ(test, r->x1, expected->x1);
> + KUNIT_EXPECT_EQ(test, r->y1, expected->y1);
> + KUNIT_EXPECT_EQ(test, drm_rect_width(r), drm_rect_width(expected));
> + KUNIT_EXPECT_EQ(test, drm_rect_height(r), drm_rect_height(expected));
> +}
We already have a drm_rect_equals().
> +
> static void drm_test_rect_clip_scaled_div_by_zero(struct kunit *test)
> {
> struct drm_rect src, dst, clip;
> @@ -196,11 +205,32 @@ static void
> drm_test_rect_clip_scaled_signed_vs_unsigned(struct kunit *test)
> KUNIT_EXPECT_FALSE_MSG(test, drm_rect_visible(&src), "Source should not
> be visible\n");
> }
>
> +static void drm_test_rect_intersect(struct kunit *test)
> +{
> + struct drm_rect r1, r2;
> + bool visible;
> +
> + drm_rect_init(&r1, 0, 0, 2, 2);
> + drm_rect_init(&r2, 1, 1, 2, 2);
> +
> + visible = drm_rect_intersect(&r1, &r2);
> +
> + KUNIT_EXPECT_TRUE_MSG(test, visible, "Interserction should be a visible
> rect");
> + drm_rect_compare(test, &r1, &DRM_RECT_INIT(1, 1, 1, 1));
> +
> + drm_rect_init(&r1, 0, 0, 1, 1);
> +
I would re-init r2 here too to make it easier to see what we're
actually testing.
I would probably test a few more variations of the overlap between
the rectangles, eg: equal rectangles, one smaller one fully inside
the bigger one, overlaps across different edges/corners.
> + visible = drm_rect_intersect(&r1, &r2);
> +
> + KUNIT_EXPECT_FALSE_MSG(test, visible, "Interserction should not be a
> visible rect");
> +}
> +
> static struct kunit_case drm_rect_tests[] = {
> KUNIT_CASE(drm_test_rect_clip_scaled_div_by_zero),
> KUNIT_CASE(drm_test_rect_clip_scaled_not_clipped),
> KUNIT_CASE(drm_test_rect_clip_scaled_clipped),
> KUNIT_CASE(drm_test_rect_clip_scaled_signed_vs_unsigned),
> + KUNIT_CASE(drm_test_rect_intersect),
> { }
> };
>
> --
> 2.39.2
--
Ville Syrjälä
Intel
