[test/extend-*] Add various cairo_pattern_set_extend() test cases.

Add various test cases to exercise
_cairo_pattern_acquire_surface_for_surface(), most notably using similar
source surfaces to provide coverage of the non-image surface branch.

1 files changed, 56 insertions, 0 deletions

diff --git a/test/extend-reflect-similar.c b/test/extend-reflect-similar.c
new file mode 100644
index 00000000..1ff4039e
--- /dev/null
+++ b/test/extend-reflect-similar.c
@@ -0,0 +1,56 @@
+#include "cairo-test.h"
+
+const char	png_filename[]	= "romedalen.png";
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "extend-reflect-similar",
+    "Test CAIRO_EXTEND_REFLECT for surface patterns",
+    256 + 32*2, 192 + 32*2,
+    draw
+};
+
+static cairo_surface_t *
+clone_similar_surface (cairo_surface_t * target, cairo_surface_t *surface)
+{
+    cairo_t *cr;
+    cairo_surface_t *similar;
+
+    similar = cairo_surface_create_similar (target,
+	                              cairo_surface_get_content (surface),
+				      cairo_image_surface_get_width (surface),
+				      cairo_image_surface_get_height (surface));
+    cr = cairo_create (similar);
+    cairo_set_source_surface (cr, surface, 0, 0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+    cairo_paint (cr);
+    cairo_destroy (cr);
+
+    return similar;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *surface;
+    cairo_surface_t *similar;
+
+    surface = cairo_test_create_surface_from_png (png_filename);
+    similar = clone_similar_surface (cairo_get_group_target (cr), surface);
+    cairo_set_source_surface (cr, similar, 32, 32);
+    cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REFLECT);
+
+    cairo_paint (cr);
+
+    cairo_surface_destroy (similar);
+    cairo_surface_destroy (surface);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}