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      1 /*
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     30 
     31 #include "config.h"
     32 #include "platform/graphics/BitmapImage.h"
     33 
     34 #include "platform/SharedBuffer.h"
     35 #include "platform/graphics/DeferredImageDecoder.h"
     36 #include "platform/graphics/ImageObserver.h"
     37 #include "public/platform/Platform.h"
     38 #include "public/platform/WebUnitTestSupport.h"
     39 
     40 #include <gtest/gtest.h>
     41 
     42 namespace WebCore {
     43 
     44 class BitmapImageTest : public ::testing::Test {
     45 public:
     46     class FakeImageObserver : public ImageObserver {
     47     public:
     48         FakeImageObserver() : m_lastDecodedSizeChangedDelta(0) { }
     49 
     50         virtual void decodedSizeChanged(const Image*, int delta)
     51         {
     52             m_lastDecodedSizeChangedDelta = delta;
     53         }
     54         virtual void didDraw(const Image*) OVERRIDE { }
     55         virtual bool shouldPauseAnimation(const Image*) OVERRIDE { return false; }
     56         virtual void animationAdvanced(const Image*) OVERRIDE { }
     57         virtual void changedInRect(const Image*, const IntRect&) { }
     58 
     59         int m_lastDecodedSizeChangedDelta;
     60     };
     61 
     62     static PassRefPtr<SharedBuffer> readFile(const char* fileName)
     63     {
     64         String filePath = blink::Platform::current()->unitTestSupport()->webKitRootDir();
     65         filePath.append(fileName);
     66         return blink::Platform::current()->unitTestSupport()->readFromFile(filePath);
     67     }
     68 
     69     // Accessors to BitmapImage's protected methods.
     70     void destroyDecodedData(bool destroyAll) { m_image->destroyDecodedData(destroyAll); }
     71     size_t frameCount() { return m_image->frameCount(); }
     72     void setCurrentFrame(size_t frame) { m_image->m_currentFrame = frame; }
     73     size_t frameDecodedSize(size_t frame) { return m_image->m_frames[frame].m_frameBytes; }
     74     size_t decodedFramesCount() const { return m_image->m_frames.size(); }
     75 
     76     void loadImage(const char* fileName)
     77     {
     78         RefPtr<SharedBuffer> imageData = readFile("/LayoutTests/fast/images/resources/animated-10color.gif");
     79         ASSERT_TRUE(imageData.get());
     80 
     81         m_image->setData(imageData, true);
     82         EXPECT_EQ(0u, decodedSize());
     83 
     84         size_t frameCount = m_image->frameCount();
     85         for (size_t i = 0; i < frameCount; ++i)
     86             m_image->frameAtIndex(i);
     87     }
     88 
     89     size_t decodedSize()
     90     {
     91         // In the context of this test, the following loop will give the correct result, but only because the test
     92         // forces all frames to be decoded in loadImage() above. There is no general guarantee that frameDecodedSize()
     93         // is up-to-date. Because of how multi frame images (like GIF) work, requesting one frame to be decoded may
     94         // require other previous frames to be decoded as well. In those cases frameDecodedSize() wouldn't return the
     95         // correct thing for the previous frame because the decoded size wouldn't have propagated upwards to the
     96         // BitmapImage frame cache.
     97         size_t size = 0;
     98         for (size_t i = 0; i < decodedFramesCount(); ++i)
     99             size += frameDecodedSize(i);
    100         return size;
    101     }
    102 
    103 protected:
    104     virtual void SetUp() OVERRIDE
    105     {
    106         DeferredImageDecoder::setEnabled(false);
    107         m_image = BitmapImage::create(&m_imageObserver);
    108     }
    109 
    110     FakeImageObserver m_imageObserver;
    111     RefPtr<BitmapImage> m_image;
    112 };
    113 
    114 // Fails on the WebKit XP (deps) bot, see http://crbug.com/327104
    115 #if OS(WIN)
    116 TEST_F(BitmapImageTest, DISABLED_destroyDecodedDataExceptCurrentFrame)
    117 #else
    118 TEST_F(BitmapImageTest, destroyDecodedDataExceptCurrentFrame)
    119 #endif
    120 {
    121     loadImage("/LayoutTests/fast/images/resources/animated-10color.gif");
    122     size_t totalSize = decodedSize();
    123     size_t frame = frameCount() / 2;
    124     setCurrentFrame(frame);
    125     size_t size = frameDecodedSize(frame);
    126     destroyDecodedData(false);
    127     EXPECT_LT(m_imageObserver.m_lastDecodedSizeChangedDelta, 0);
    128     EXPECT_GE(m_imageObserver.m_lastDecodedSizeChangedDelta, -static_cast<int>(totalSize - size));
    129 }
    130 
    131 // Fails on the WebKit XP (deps) bot, see http://crbug.com/327104
    132 #if OS(WIN)
    133 TEST_F(BitmapImageTest, DISABLED_destroyAllDecodedData)
    134 #else
    135 TEST_F(BitmapImageTest, destroyAllDecodedData)
    136 #endif
    137 {
    138     loadImage("/LayoutTests/fast/images/resources/animated-10color.gif");
    139     size_t totalSize = decodedSize();
    140     EXPECT_GT(totalSize, 0u);
    141     destroyDecodedData(true);
    142     EXPECT_EQ(-static_cast<int>(totalSize), m_imageObserver.m_lastDecodedSizeChangedDelta);
    143     EXPECT_EQ(0u, decodedSize());
    144 }
    145 
    146 } // namespace
    147