1 files changed, 37 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/blending_test.cc b/third_party/jpeg-xl/lib/jxl/blending_test.cc
new file mode 100644
index 0000000000..ff4c46c529
--- /dev/null
+++ b/third_party/jpeg-xl/lib/jxl/blending_test.cc
@@ -0,0 +1,37 @@
+// Copyright (c) the JPEG XL Project Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "lib/extras/codec.h"
+#include "lib/jxl/image_test_utils.h"
+#include "lib/jxl/test_utils.h"
+#include "lib/jxl/testing.h"
+
+namespace jxl {
+namespace {
+
+using ::testing::SizeIs;
+
+TEST(BlendingTest, Crops) {
+  const PaddedBytes compressed =
+      jxl::test::ReadTestData("jxl/blending/cropped_traffic_light.jxl");
+  CodecInOut decoded;
+  ASSERT_TRUE(test::DecodeFile({}, Span<const uint8_t>(compressed), &decoded));
+  ASSERT_THAT(decoded.frames, SizeIs(4));
+
+  int i = 0;
+  for (const ImageBundle& ib : decoded.frames) {
+    std::ostringstream filename;
+    filename << "jxl/blending/cropped_traffic_light_frame-" << i << ".png";
+    const PaddedBytes compressed_frame =
+        jxl::test::ReadTestData(filename.str());
+    CodecInOut frame;
+    ASSERT_TRUE(SetFromBytes(Span<const uint8_t>(compressed_frame), &frame));
+    JXL_EXPECT_OK(SamePixels(ib.color(), *frame.Main().color(), _));
+    ++i;
+  }
+}
+
+}  // namespace
+}  // namespace jxl