diff options
Diffstat (limited to 'test/cairo-test.c')
| -rw-r--r-- | test/cairo-test.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/test/cairo-test.c b/test/cairo-test.c index 55e28dc7..1f495af6 100644 --- a/test/cairo-test.c +++ b/test/cairo-test.c @@ -1369,6 +1369,52 @@ REPEAT: cairo_test_copy_file (test_filename, pass_filename); } + /* If failed, compare against the current image output, + * and attempt to detect systematic failures. + */ + if (ret == CAIRO_TEST_FAILURE) { + char *image_out_path; + + image_out_path = + cairo_test_reference_filename (ctx, + base_name, + ctx->test_name, + "image", + "image", + format, + CAIRO_TEST_OUT_SUFFIX, + CAIRO_TEST_PNG_EXTENSION); + if (image_out_path != NULL) { + if (cairo_test_files_equal (out_png_path, + image_out_path)) + { + ret = CAIRO_TEST_XFAILURE; + } + else + { + ref_image = + cairo_image_surface_create_from_png (image_out_path); + if (cairo_surface_status (ref_image) == CAIRO_STATUS_SUCCESS) + { + diff_status = image_diff (ctx, + test_image, ref_image, + diff_image, + &result); + if (diff_status == CAIRO_STATUS_SUCCESS && + (result.pixels_changed == 0 || + result.max_diff > target->error_tolerance)) + { + ret = CAIRO_TEST_XFAILURE; + } + + cairo_surface_destroy (ref_image); + } + } + + free (image_out_path); + } + } + cairo_surface_destroy (test_image); cairo_surface_destroy (diff_image); } |