[PATCH v2 1/2] drm/tests: Split drm_framebuffer_create_test into parameterized tests

Maíra Canal
2022-09-01T12:44:23Z

The igt_check_drm_framebuffer_create is based on a loop that executes
tests for all createbuffer_tests test cases. This could be better
represented by parameterized tests, provided by KUnit.

So, convert the igt_check_drm_framebuffer_create into parameterized tests.

Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
---
v1 -> v2: https://lore.kernel.org/dri-devel/20220830211603.191734-1-mairacanal@riseup.net/
- Use .init for mock_drm_device instead of a global variable. (Michał Winiarski)
---
drivers/gpu/drm/tests/drm_framebuffer_test.c | 45 ++++++++++++--------
1 file changed, 27 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/tests/drm_framebuffer_test.c b/drivers/gpu/drm/tests/drm_framebuffer_test.c
index ec7a08ba4056..564794917784 100644
--- a/drivers/gpu/drm/tests/drm_framebuffer_test.c
+++ b/drivers/gpu/drm/tests/drm_framebuffer_test.c
@@ -25,7 +25,7 @@ struct drm_framebuffer_test {
const char *name;
};

-static struct drm_framebuffer_test createbuffer_tests[] = {
+static const struct drm_framebuffer_test drm_framebuffer_create_cases[] = {
{ .buffer_created = 1, .name = "ABGR8888 normal sizes",
.cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_ABGR8888,
.handles = { 1, 0, 0 }, .pitches = { 4 * 600, 0, 0 },
@@ -330,43 +330,52 @@ static struct drm_mode_config_funcs mock_config_funcs = {
.fb_create = fb_create_mock,
};

-static struct drm_device mock_drm_device = {
- .mode_config = {
+static int drm_framebuffer_test_init(struct kunit *test)
+{
+ struct drm_device *mock;
+
+ mock = kunit_kzalloc(test, sizeof(*mock), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, mock);
+
+ mock->mode_config = (struct drm_mode_config) {
.min_width = MIN_WIDTH,
.max_width = MAX_WIDTH,
.min_height = MIN_HEIGHT,
.max_height = MAX_HEIGHT,
.funcs = &mock_config_funcs,
- },
-};
+ };

-static int execute_drm_mode_fb_cmd2(struct drm_mode_fb_cmd2 *r)
+ test->priv = mock;
+ return 0;
+}
+
+static void test_drm_framebuffer_create(struct kunit *test)
{
+ const struct drm_framebuffer_test *params = test->param_value;
+ struct drm_device *mock = test->priv;
int buffer_created = 0;

- mock_drm_device.dev_private = &buffer_created;
- drm_internal_framebuffer_create(&mock_drm_device, r, NULL);
- return buffer_created;
+ mock->dev_private = &buffer_created;
+ drm_internal_framebuffer_create(mock, &params->cmd, NULL);
+ KUNIT_EXPECT_EQ(test, params->buffer_created, buffer_created);
}

-static void igt_check_drm_framebuffer_create(struct kunit *test)
+static void drm_framebuffer_test_to_desc(const struct drm_framebuffer_test *t, char *desc)
{
- int i = 0;
-
- for (i = 0; i < ARRAY_SIZE(createbuffer_tests); i++) {
- KUNIT_EXPECT_EQ_MSG(test, createbuffer_tests[i].buffer_created,
- execute_drm_mode_fb_cmd2(&createbuffer_tests[i].cmd),
- "Test %d: \"%s\" failed\n", i, createbuffer_tests[i].name);
- }
+ strcpy(desc, t->name);
}

+KUNIT_ARRAY_PARAM(drm_framebuffer_create, drm_framebuffer_create_cases,
+ drm_framebuffer_test_to_desc);
+
static struct kunit_case drm_framebuffer_tests[] = {
- KUNIT_CASE(igt_check_drm_framebuffer_create),
+ KUNIT_CASE_PARAM(test_drm_framebuffer_create, drm_framebuffer_create_gen_params),
{ }
};

static struct kunit_suite drm_framebuffer_test_suite = {
.name = "drm_framebuffer",
+ .init = drm_framebuffer_test_init,
.test_cases = drm_framebuffer_tests,
};

--
2.37.2