test: add basic test for candidate planes

test/meson.build

@@ -79,6 +79,9 @@ tests = {
 		'unmatched',
 		'unset',
 	],
+	'candidate': [
+		'basic',
+	],
 }
 
 foreach test_name, subtests : tests

test/test_candidate.c

@@ -0,0 +1,98 @@
+#include <assert.h>
+#include <unistd.h>
+#include <libliftoff.h>
+#include <stdio.h>
+#include <string.h>
+#include "libdrm_mock.h"
+
+static struct liftoff_layer *
+add_layer(struct liftoff_output *output, int x, int y, int width, int height)
+{
+	uint32_t fb_id;
+	struct liftoff_layer *layer;
+
+	layer = liftoff_layer_create(output);
+	fb_id = liftoff_mock_drm_create_fb(layer);
+	liftoff_layer_set_property(layer, "FB_ID", fb_id);
+	liftoff_layer_set_property(layer, "CRTC_X", x);
+	liftoff_layer_set_property(layer, "CRTC_Y", y);
+	liftoff_layer_set_property(layer, "CRTC_W", width);
+	liftoff_layer_set_property(layer, "CRTC_H", height);
+	liftoff_layer_set_property(layer, "SRC_X", 0);
+	liftoff_layer_set_property(layer, "SRC_Y", 0);
+	liftoff_layer_set_property(layer, "SRC_W", width << 16);
+	liftoff_layer_set_property(layer, "SRC_H", height << 16);
+
+	return layer;
+}
+
+static void
+test_basic(void)
+{
+	struct liftoff_mock_plane *mock_plane_ok, *mock_plane_ko;
+	int drm_fd;
+	struct liftoff_device *device;
+	struct liftoff_output *output;
+	struct liftoff_layer *layer;
+	struct liftoff_plane *plane_ok, *plane_ko;
+	drmModeAtomicReq *req;
+	drmModePropertyRes prop = {0};
+	int ret;
+
+	mock_plane_ok = liftoff_mock_drm_create_plane(DRM_PLANE_TYPE_OVERLAY);
+	mock_plane_ko = liftoff_mock_drm_create_plane(DRM_PLANE_TYPE_OVERLAY);
+
+	/* Only add the COLOR_RANGE property to mock_plane_ok only. libliftoff
+	 * should mark that one as a possible candidate, but not the other
+	 * one. */
+	strncpy(prop.name, "COLOR_RANGE", sizeof(prop.name) - 1);
+	liftoff_mock_plane_add_property(mock_plane_ok, &prop);
+
+	drm_fd = liftoff_mock_drm_open();
+	device = liftoff_device_create(drm_fd);
+	assert(device != NULL);
+
+	plane_ok = liftoff_plane_create(device, liftoff_mock_plane_get_id(mock_plane_ok));
+	plane_ko = liftoff_plane_create(device, liftoff_mock_plane_get_id(mock_plane_ko));
+
+	output = liftoff_output_create(device, liftoff_mock_drm_crtc_id);
+	layer = add_layer(output, 0, 0, 1920, 1080);
+	liftoff_layer_set_property(layer, "COLOR_RANGE", 0);
+
+	req = drmModeAtomicAlloc();
+	ret = liftoff_output_apply(output, req, 0);
+	assert(ret == 0);
+	ret = drmModeAtomicCommit(drm_fd, req, 0, NULL);
+	assert(ret == 0);
+	assert(liftoff_mock_plane_get_layer(mock_plane_ok) == NULL);
+	assert(liftoff_mock_plane_get_layer(mock_plane_ko) == NULL);
+	assert(liftoff_layer_is_candidate_plane(layer, plane_ok));
+	assert(!liftoff_layer_is_candidate_plane(layer, plane_ko));
+	drmModeAtomicFree(req);
+
+	liftoff_device_destroy(device);
+	close(drm_fd);
+}
+
+int
+main(int argc, char *argv[])
+{
+	const char *test_name;
+
+	liftoff_log_set_priority(LIFTOFF_DEBUG);
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: %s <test-name>\n", argv[0]);
+		return 1;
+	}
+	test_name = argv[1];
+
+	if (strcmp(test_name, "basic") == 0) {
+		test_basic();
+	} else {
+		fprintf(stderr, "no such test: %s\n", test_name);
+		return 1;
+	}
+
+	return 0;
+}