Add tests and documentation

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

1 files changed, 91 insertions, 2 deletions

diff --git a/rtgrpblib_reset_raster.c b/rtgrpblib_reset_raster.c
index 2cfef42..a3b81df 100644
--- a/rtgrpblib_reset_raster.c
+++ b/rtgrpblib_reset_raster.c
@@ -6,7 +6,7 @@
 int
 rtgrpblib_reset_raster(RASTER *raster, size_t width, size_t height)
 {
-	if (!width || !height || width > raster->width * raster->height / height) {
+	if (!width || !height || width > raster->size / height) {
 		errno = EINVAL;
 		return -1;
 	}
@@ -23,7 +23,96 @@ rtgrpblib_reset_raster(RASTER *raster, size_t width, size_t height)
 int
 main(void)
 {
-	return 0; /* TODO add test */
+	
+	RASTER *raster;
+	size_t i, n, size;
+
+	raster = rtgrpblib_create_raster(10, 20);
+	ASSERT(raster);
+	ASSERT(raster->width == 10);
+	ASSERT(raster->height == 20);
+	raster->draftness = 10;
+	size = raster->width * raster->height;
+	ASSERT(raster->size == size);
+
+	errno = 0;
+	ASSERT(rtgrpblib_reset_raster(raster, 10, 21) == -1);
+	ASSERT(errno == EINVAL);
+	ASSERT(raster->width == 10);
+	ASSERT(raster->height == 20);
+	ASSERT(raster->size == size);
+	ASSERT(raster->draftness == 10);
+
+	errno = 0;
+	ASSERT(rtgrpblib_reset_raster(raster, 11, 20) == -1);
+	ASSERT(errno == EINVAL);
+	ASSERT(raster->width == 10);
+	ASSERT(raster->height == 20);
+	ASSERT(raster->size == size);
+	ASSERT(raster->draftness == 10);
+
+	errno = 0;
+	ASSERT(rtgrpblib_reset_raster(raster, 1, 0) == -1);
+	ASSERT(errno == EINVAL);
+	ASSERT(raster->width == 10);
+	ASSERT(raster->height == 20);
+	ASSERT(raster->size == size);
+	ASSERT(raster->draftness == 10);
+
+	errno = 0;
+	ASSERT(rtgrpblib_reset_raster(raster, 0, 1) == -1);
+	ASSERT(errno == EINVAL);
+	ASSERT(raster->width == 10);
+	ASSERT(raster->height == 20);
+	ASSERT(raster->size == size);
+	ASSERT(raster->draftness == 10);
+
+	errno = 0;
+	ASSERT(rtgrpblib_reset_raster(raster, 0, 0) == -1);
+	ASSERT(errno == EINVAL);
+	ASSERT(raster->width == 10);
+	ASSERT(raster->height == 20);
+	ASSERT(raster->size == size);
+	ASSERT(raster->draftness == 10);
+
+	memset(raster->cells, 100, raster->size * sizeof(*raster->cells));
+	ASSERT(!rtgrpblib_reset_raster(raster, 5, 10));
+	ASSERT(raster->width == 5);
+	ASSERT(raster->height == 10);
+	ASSERT(raster->size == size);
+	ASSERT(raster->draftness == 10);
+	n = raster->width * raster->height;
+	for (i = 0; i < n; i++) {
+		ASSERT(!raster->cells[i].cell_coverage);
+		ASSERT(!raster->cells[i].opposite_coverage);
+	}
+
+	memset(raster->cells, 100, raster->size * sizeof(*raster->cells));
+	ASSERT(!rtgrpblib_reset_raster(raster, 5, 30));
+	ASSERT(raster->width == 5);
+	ASSERT(raster->height == 30);
+	ASSERT(raster->size == size);
+	ASSERT(raster->draftness == 10);
+	n = raster->width * raster->height;
+	for (i = 0; i < n; i++) {
+		ASSERT(!raster->cells[i].cell_coverage);
+		ASSERT(!raster->cells[i].opposite_coverage);
+	}
+
+	memset(raster->cells, 100, raster->size * sizeof(*raster->cells));
+	ASSERT(!rtgrpblib_reset_raster(raster, 15, 10));
+	ASSERT(raster->width == 15);
+	ASSERT(raster->height == 10);
+	ASSERT(raster->size == size);
+	ASSERT(raster->draftness == 10);
+	n = raster->width * raster->height;
+	for (i = 0; i < n; i++) {
+		ASSERT(!raster->cells[i].cell_coverage);
+		ASSERT(!raster->cells[i].opposite_coverage);
+	}
+
+	free(raster);
+	return 0;
 }
 
 #endif