test libglitter_desaturate_{double,float}

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 71 insertions, 1 deletions

diff --git a/libglitter_desaturate_double.c b/libglitter_desaturate_double.c
index ba588f4..0797ddc 100644
--- a/libglitter_desaturate_double.c
+++ b/libglitter_desaturate_double.c
@@ -55,7 +55,77 @@ libglitter_desaturate_double(double **rasters, size_t nrasters, size_t rowsize,
 int
 main(void)
 {
-	return 0; /* TODO add test */
+	double rasters1[4 * 10 * 3][4], *rasters1list[4], primary_ys[4], saturation;
+	double rasters2[4 * 10 * 3][4], *rasters2list[4], saturations[4];
+	size_t i, j;
+
+	void *randptr = malloc(1);
+	srand((unsigned int)(uintptr_t)randptr);
+	free(randptr);
+
+#define RANDOMISE(SAT)\
+	do {\
+		saturation = (SAT);\
+		saturations[0] = saturation;\
+		saturations[1] = saturation;\
+		saturations[2] = saturation;\
+		saturations[3] = saturation;\
+		for (i = 0; i < 4; i++) {\
+			rasters1list[i] = rasters1[i];\
+			rasters2list[i] = rasters2[i];\
+			primary_ys[i] = rand() / (double)RAND_MAX;\
+			for (j = 0; j < 4 * 10 * 3; j++)\
+				rasters1[j][i] = rand() / (double)RAND_MAX;\
+		}\
+		memcpy(rasters2, rasters1, sizeof(rasters1));\
+	} while (0)
+
+	RANDOMISE(rand() / (double)RAND_MAX);
+	libglitter_desaturate_double(rasters1list, 4, 10, 3, 7, 4, saturation, primary_ys);
+	libglitter_per_channel_desaturate_double(rasters2list, 4, 10, 3, 7, 4, saturations, primary_ys);
+	ASSERT(!memcmp(rasters1, rasters2, sizeof(rasters1)));
+
+	RANDOMISE(rand() / (double)RAND_MAX);
+	libglitter_desaturate_double(rasters1list, 3, 10, 3, 7, 4, saturation, primary_ys);
+	libglitter_per_channel_desaturate_double(rasters2list, 3, 10, 3, 7, 4, saturations, primary_ys);
+	ASSERT(!memcmp(rasters1, rasters2, sizeof(rasters1)));
+
+	RANDOMISE(rand() / (double)RAND_MAX);
+	libglitter_desaturate_double(rasters1list, 3, 10, 3, 7, 4, saturation, NULL);
+	libglitter_per_channel_desaturate_double(rasters2list, 3, 10, 3, 7, 4, saturations, NULL);
+	ASSERT(!memcmp(rasters1, rasters2, sizeof(rasters1)));
+
+	RANDOMISE(0);
+	libglitter_desaturate_double(rasters1list, 4, 10, 3, 7, 4, saturation, primary_ys);
+	libglitter_per_channel_desaturate_double(rasters2list, 4, 10, 3, 7, 4, saturations, primary_ys);
+	ASSERT(!memcmp(rasters1, rasters2, sizeof(rasters1)));
+
+	RANDOMISE(0);
+	libglitter_desaturate_double(rasters1list, 3, 10, 3, 7, 4, saturation, primary_ys);
+	libglitter_per_channel_desaturate_double(rasters2list, 3, 10, 3, 7, 4, saturations, primary_ys);
+	ASSERT(!memcmp(rasters1, rasters2, sizeof(rasters1)));
+
+	RANDOMISE(0);
+	libglitter_desaturate_double(rasters1list, 3, 10, 3, 7, 4, saturation, NULL);
+	libglitter_per_channel_desaturate_double(rasters2list, 3, 10, 3, 7, 4, saturations, NULL);
+	ASSERT(!memcmp(rasters1, rasters2, sizeof(rasters1)));
+
+	RANDOMISE(1);
+	libglitter_desaturate_double(rasters1list, 4, 10, 3, 7, 4, saturation, primary_ys);
+	libglitter_per_channel_desaturate_double(rasters2list, 4, 10, 3, 7, 4, saturations, primary_ys);
+	ASSERT(!memcmp(rasters1, rasters2, sizeof(rasters1)));
+
+	RANDOMISE(1);
+	libglitter_desaturate_double(rasters1list, 3, 10, 3, 7, 4, saturation, primary_ys);
+	libglitter_per_channel_desaturate_double(rasters2list, 3, 10, 3, 7, 4, saturations, primary_ys);
+	ASSERT(!memcmp(rasters1, rasters2, sizeof(rasters1)));
+
+	RANDOMISE(1);
+	libglitter_desaturate_double(rasters1list, 3, 10, 3, 7, 4, saturation, NULL);
+	libglitter_per_channel_desaturate_double(rasters2list, 3, 10, 3, 7, 4, saturations, NULL);
+	ASSERT(!memcmp(rasters1, rasters2, sizeof(rasters1)));
+
+	return 0;
 }