GIF decoding: Add a unit test for repetition count

third_party/WebKit/Source/platform/image-decoders/gif/GIFImageDecoderTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 481 matching lines @@
         if (decoder->isSizeAvailable() && !frameSize.width() && !frameSize.height()) {
             frameSize = decoder->decodedSize();
             continue;
         }
 
         ASSERT_EQ(frameSize.width(), decoder->decodedSize().width());
         ASSERT_EQ(frameSize.height(), decoder->decodedSize().height());
     }
 }
 
+TEST(GIFImageDecoderTest, verifyRepetitionCount)
+{
+    const int expectedRepetitionCount = 2;
+    OwnPtr<ImageDecoder> decoder = createDecoder();
+    RefPtr<SharedBuffer> data = readFile(layoutTestResourcesDir, "full2loop.gif");
+    ASSERT_TRUE(data.get());
+    decoder->setData(data.get(), true);
+    EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount()); // Default value before decode.
+
+    for (size_t i = 0; i < decoder->frameCount(); ++i) {
+        ImageFrame* frame = decoder->frameBufferAtIndex(i);
+        EXPECT_EQ(ImageFrame::FrameComplete, frame->getStatus());
+    }
+
+    EXPECT_EQ(expectedRepetitionCount, decoder->repetitionCount()); // Expected value after decode.
+}
+
 } // namespace blink