Automate error checking for fallback-resolution.

For this we extend the boilerplate get_image() routines to extract a
single page out of a paginated document and then proceed to manually
check each page of the fallback-resolution test.

(Well that's the theory, in practice SVG doesn't support multiple pages
and so we just generate a new surface for each resolution. But the
infrastructure is in place so that we can automate other tests,
e.g. test/multi-pages.)

1 files changed, 12 insertions, 0 deletions

diff --git a/test/cairo-test.h b/test/cairo-test.h
index 5dd61f880..69b3d8544 100644
--- a/test/cairo-test.h
+++ b/test/cairo-test.h
@@ -184,6 +184,18 @@ cairo_bool_t
 cairo_test_is_target_enabled (const cairo_test_context_t *ctx,
 	                      const char *target);
 
+char *
+cairo_test_reference_image_filename (const cairo_test_context_t *ctx,
+	                             const char *base_name,
+				     const char *test_name,
+				     const char *target_name,
+				     const char *format);
+
+cairo_surface_t *
+cairo_test_get_reference_image (cairo_test_context_t *ctx,
+				const char *filename,
+				cairo_bool_t flatten);
+
 CAIRO_END_DECLS
 
 #endif