Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/graphics/BitmapImageTest.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
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "core/platform/graphics/BitmapImage.h"
-
-#include "platform/SharedBuffer.h"
-#include "platform/graphics/ImageObserver.h"
-#include "public/platform/Platform.h"
-#include "public/platform/WebUnitTestSupport.h"
-
-#include <gtest/gtest.h>
-
-namespace WebCore {
-
-class BitmapImageTest : public ::testing::Test {
-public:
-    class FakeImageObserver : public ImageObserver {
-    public:
-        FakeImageObserver() : m_lastDecodedSizeChangedDelta(0) { }
-
-        virtual void decodedSizeChanged(const Image*, int delta)
-        {
-            m_lastDecodedSizeChangedDelta = delta;
-        }
-        virtual void didDraw(const Image*) OVERRIDE { }
-        virtual bool shouldPauseAnimation(const Image*) OVERRIDE { return false; }
-        virtual void animationAdvanced(const Image*) OVERRIDE { }
-        virtual void changedInRect(const Image*, const IntRect&) { }
-
-        int m_lastDecodedSizeChangedDelta;
-    };
-
-    static PassRefPtr<SharedBuffer> readFile(const char* fileName)
-    {
-        String filePath = blink::Platform::current()->unitTestSupport()->webKitRootDir();
-        filePath.append(fileName);
-        return blink::Platform::current()->unitTestSupport()->readFromFile(filePath);
-    }
-
-    // Accessors to BitmapImage's protected methods.
-    void destroyDecodedData(bool destroyAll) { m_image->destroyDecodedData(destroyAll); }
-    size_t frameCount() { return m_image->frameCount(); }
-    void setCurrentFrame(size_t frame) { m_image->m_currentFrame = frame; }
-    size_t frameDecodedSize(size_t frame) { return m_image->m_frames[frame].m_frameBytes; }
-    size_t decodedFramesCount() const { return m_image->m_frames.size(); }
-
-    void loadImage(const char* fileName)
-    {
-        RefPtr<SharedBuffer> imageData = readFile("/LayoutTests/fast/images/resources/animated-10color.gif");
-        ASSERT_TRUE(imageData.get());
-
-        m_image->setData(imageData, true);
-        EXPECT_EQ(0u, decodedSize());
-
-        size_t frameCount = m_image->frameCount();
-        for (size_t i = 0; i < frameCount; ++i)
-            m_image->frameAtIndex(i);
-    }
-
-    size_t decodedSize()
-    {
-        // In the context of this test, the following loop will give the correct result, but only because the test
-        // forces all frames to be decoded in loadImage() above. There is no general guarantee that frameDecodedSize()
-        // is up-to-date. Because of how multi frame images (like GIF) work, requesting one frame to be decoded may
-        // require other previous frames to be decoded as well. In those cases frameDecodedSize() wouldn't return the
-        // correct thing for the previous frame because the decoded size wouldn't have propagated upwards to the
-        // BitmapImage frame cache.
-        size_t size = 0;
-        for (size_t i = 0; i < decodedFramesCount(); ++i)
-            size += frameDecodedSize(i);
-        return size;
-    }
-
-protected:
-    virtual void SetUp() OVERRIDE
-    {
-        m_image = BitmapImage::create(&m_imageObserver);
-    }
-
-    FakeImageObserver m_imageObserver;
-    RefPtr<BitmapImage> m_image;
-};
-
-TEST_F(BitmapImageTest, destroyDecodedDataExceptCurrentFrame)
-{
-    loadImage("/LayoutTests/fast/images/resources/animated-10color.gif");
-    size_t totalSize = decodedSize();
-    size_t frame = frameCount() / 2;
-    setCurrentFrame(frame);
-    size_t size = frameDecodedSize(frame);
-    destroyDecodedData(false);
-    EXPECT_LT(m_imageObserver.m_lastDecodedSizeChangedDelta, 0);
-    EXPECT_GE(m_imageObserver.m_lastDecodedSizeChangedDelta, -static_cast<int>(totalSize - size));
-}
-
-TEST_F(BitmapImageTest, destroyAllDecodedData)
-{
-    loadImage("/LayoutTests/fast/images/resources/animated-10color.gif");
-    size_t totalSize = decodedSize();
-    EXPECT_GT(totalSize, 0u);
-    destroyDecodedData(true);
-    EXPECT_EQ(-static_cast<int>(totalSize), m_imageObserver.m_lastDecodedSizeChangedDelta);
-    EXPECT_EQ(0u, decodedSize());
-}
-
-} // namespace