[test/surface-source] Skip tests if we cannot create the source surface.

Check that the test environment supports the desired source and avoid
triggering asserts in the test routines.

1 files changed, 8 insertions, 0 deletions

diff --git a/test/surface-source.c b/test/surface-source.c
index c7f333469..5a034ad09 100644
--- a/test/surface-source.c
+++ b/test/surface-source.c
@@ -89,5 +89,13 @@ draw (cairo_t *cr, int width, int height)
 int
 main (void)
 {
+    cairo_surface_t *surface;
+
+    surface = create_source_surface (SIZE);
+    if (surface == NULL) /* can't create the source so skip the test */
+	return CAIRO_TEST_SUCCESS;
+
+    cairo_surface_destroy (surface);
+
     return cairo_test (&test);
 }