third_party/WebKit/Source/core/frame/ImageBitmapTest.cpp - chromium/src - Git at Google

 /*
  * 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 "core/frame/ImageBitmap.h"

 #include "SkPixelRef.h" // FIXME: qualify this skia header file.
 #include "bindings/core/v8/UnionTypesCore.h"
 #include "core/dom/Document.h"
 #include "core/fetch/ImageResource.h"
 #include "core/fetch/MemoryCache.h"
 #include "core/fetch/MockImageResourceClient.h"
 #include "core/html/HTMLCanvasElement.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/html/HTMLVideoElement.h"
 #include "platform/graphics/StaticBitmapImage.h"
 #include "platform/heap/Handle.h"
 #include "platform/network/ResourceRequest.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkImage.h"
 #include "third_party/skia/include/core/SkSurface.h"
 #include "wtf/OwnPtr.h"

 namespace blink {

 class ImageBitmapTest : public ::testing::Test {
 protected:
     virtual void SetUp()
     {
         RefPtr<SkSurface> surface = adoptRef(SkSurface::NewRasterN32Premul(10, 10));
         surface->getCanvas()->clear(0xFFFFFFFF);
         m_image = adoptRef(surface->newImageSnapshot());

         RefPtr<SkSurface> surface2 = adoptRef(SkSurface::NewRasterN32Premul(5, 5));
         surface2->getCanvas()->clear(0xAAAAAAAA);
         m_image2 = adoptRef(surface2->newImageSnapshot());

         // Save the global memory cache to restore it upon teardown.
         m_globalMemoryCache = replaceMemoryCacheForTesting(MemoryCache::create());
     }
     virtual void TearDown()
     {
         // Garbage collection is required prior to switching out the
         // test's memory cache; image resources are released, evicting
         // them from the cache.
         Heap::collectGarbage(BlinkGC::NoHeapPointersOnStack, BlinkGC::GCWithSweep, BlinkGC::ForcedGC);

         replaceMemoryCacheForTesting(m_globalMemoryCache.release());
     }

     RefPtr<SkImage> m_image, m_image2;
     Persistent<MemoryCache> m_globalMemoryCache;
 };

 TEST_F(ImageBitmapTest, ImageResourceConsistency)
 {
     const ImageBitmapOptions defaultOptions;
     RefPtrWillBeRawPtr<HTMLImageElement> imageElement = HTMLImageElement::create(*Document::create().get());
     RefPtrWillBeRawPtr<ImageResource> image = ImageResource::create(StaticBitmapImage::create(m_image).get());
     imageElement->setImageResource(image.get());

     RefPtrWillBeRawPtr<ImageBitmap> imageBitmapNoCrop = ImageBitmap::create(imageElement.get(),
         IntRect(0, 0, m_image->width(), m_image->height()),
         &(imageElement->document()), defaultOptions);
     RefPtrWillBeRawPtr<ImageBitmap> imageBitmapInteriorCrop = ImageBitmap::create(imageElement.get(),
         IntRect(m_image->width() / 2, m_image->height() / 2, m_image->width() / 2, m_image->height() / 2),
         &(imageElement->document()), defaultOptions);
     RefPtrWillBeRawPtr<ImageBitmap> imageBitmapExteriorCrop = ImageBitmap::create(imageElement.get(),
         IntRect(-m_image->width() / 2, -m_image->height() / 2, m_image->width(), m_image->height()),
         &(imageElement->document()), defaultOptions);
     RefPtrWillBeRawPtr<ImageBitmap> imageBitmapOutsideCrop = ImageBitmap::create(imageElement.get(),
         IntRect(-m_image->width(), -m_image->height(), m_image->width(), m_image->height()),
         &(imageElement->document()), defaultOptions);

     ASSERT_EQ(imageBitmapNoCrop->bitmapImage()->imageForCurrentFrame(), imageElement->cachedImage()->image()->imageForCurrentFrame());
     ASSERT_NE(imageBitmapInteriorCrop->bitmapImage()->imageForCurrentFrame(), imageElement->cachedImage()->image()->imageForCurrentFrame());
     ASSERT_NE(imageBitmapExteriorCrop->bitmapImage()->imageForCurrentFrame(), imageElement->cachedImage()->image()->imageForCurrentFrame());

     StaticBitmapImage* emptyImage = imageBitmapOutsideCrop->bitmapImage();
     ASSERT_NE(emptyImage->imageForCurrentFrame(), imageElement->cachedImage()->image()->imageForCurrentFrame());
 }

 // Verifies that HTMLImageElements are given an elevated CacheLiveResourcePriority when used to construct an ImageBitmap.
 // ImageBitmaps that have crop rects outside of the bounds of the HTMLImageElement do not have elevated CacheLiveResourcePriority.
 TEST_F(ImageBitmapTest, ImageBitmapLiveResourcePriority)
 {
     RefPtrWillBePersistent<HTMLImageElement> imageNoCrop = HTMLImageElement::create(*Document::create().get());
     RefPtrWillBeRawPtr<ImageResource> cachedImageNoCrop = ImageResource::create(ResourceRequest("http://foo.com/1"),
         StaticBitmapImage::create(m_image).get());
     imageNoCrop->setImageResource(cachedImageNoCrop.get());

     RefPtrWillBePersistent<HTMLImageElement> imageInteriorCrop = HTMLImageElement::create(*Document::create().get());
     RefPtrWillBeRawPtr<ImageResource> cachedImageInteriorCrop = ImageResource::create(ResourceRequest("http://foo.com/2"),
         StaticBitmapImage::create(m_image).get());
     imageInteriorCrop->setImageResource(cachedImageInteriorCrop.get());

     RefPtrWillBePersistent<HTMLImageElement> imageExteriorCrop = HTMLImageElement::create(*Document::create().get());
     RefPtrWillBeRawPtr<ImageResource> cachedImageExteriorCrop = ImageResource::create(ResourceRequest("http://foo.com/3"),
         StaticBitmapImage::create(m_image).get());
     imageExteriorCrop->setImageResource(cachedImageExteriorCrop.get());

     RefPtrWillBePersistent<HTMLImageElement> imageOutsideCrop = HTMLImageElement::create(*Document::create().get());
     RefPtrWillBeRawPtr<ImageResource> cachedImageOutsideCrop = ImageResource::create(ResourceRequest("http://foo.com/4"),
         StaticBitmapImage::create(m_image).get());
     imageOutsideCrop->setImageResource(cachedImageOutsideCrop.get());

     MockImageResourceClient mockClient1(cachedImageNoCrop);
     MockImageResourceClient mockClient2(cachedImageInteriorCrop);
     MockImageResourceClient mockClient3(cachedImageExteriorCrop);
     MockImageResourceClient mockClient4(cachedImageOutsideCrop);

     memoryCache()->add(cachedImageNoCrop.get());
     memoryCache()->add(cachedImageInteriorCrop.get());
     memoryCache()->add(cachedImageExteriorCrop.get());
     memoryCache()->add(cachedImageOutsideCrop.get());
     memoryCache()->updateDecodedResource(cachedImageNoCrop.get(), UpdateForPropertyChange);
     memoryCache()->updateDecodedResource(cachedImageInteriorCrop.get(), UpdateForPropertyChange);
     memoryCache()->updateDecodedResource(cachedImageExteriorCrop.get(), UpdateForPropertyChange);
     memoryCache()->updateDecodedResource(cachedImageOutsideCrop.get(), UpdateForPropertyChange);

     // HTMLImageElements should default to CacheLiveResourcePriorityLow.
     ASSERT_EQ(memoryCache()->priority(imageNoCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
     ASSERT_EQ(memoryCache()->priority(imageInteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
     ASSERT_EQ(memoryCache()->priority(imageExteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
     ASSERT_EQ(memoryCache()->priority(imageOutsideCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);

     const ImageBitmapOptions defaultOptions;
     RefPtrWillBePersistent<ImageBitmap> imageBitmapInteriorCrop = ImageBitmap::create(imageInteriorCrop.get(),
         IntRect(m_image->width() / 2, m_image->height() / 2, m_image->width(), m_image->height()),
         &(imageInteriorCrop->document()), defaultOptions);
     {
         RefPtrWillBePersistent<ImageBitmap> imageBitmapNoCrop = ImageBitmap::create(imageNoCrop.get(),
             IntRect(0, 0, m_image->width(), m_image->height()),
             &(imageNoCrop->document()), defaultOptions);
         RefPtrWillBePersistent<ImageBitmap> imageBitmapInteriorCrop2 = ImageBitmap::create(imageInteriorCrop.get(),
             IntRect(m_image->width() / 2, m_image->height() / 2, m_image->width(), m_image->height()),
             &(imageInteriorCrop->document()), defaultOptions);
         RefPtrWillBePersistent<ImageBitmap> imageBitmapExteriorCrop = ImageBitmap::create(imageExteriorCrop.get(),
             IntRect(-m_image->width() / 2, -m_image->height() / 2, m_image->width(), m_image->height()),
             &(imageExteriorCrop->document()), defaultOptions);
         RefPtrWillBePersistent<ImageBitmap> imageBitmapOutsideCrop = ImageBitmap::create(imageOutsideCrop.get(),
             IntRect(-m_image->width(), -m_image->height(), m_image->width(), m_image->height()),
             &(imageOutsideCrop->document()), defaultOptions);

         // Images are not referenced by ImageBitmap anymore, so always CacheLiveResourcePriorityLow
         ASSERT_EQ(memoryCache()->priority(imageNoCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
         ASSERT_EQ(memoryCache()->priority(imageInteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
         ASSERT_EQ(memoryCache()->priority(imageExteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);

         // ImageBitmaps that do not contain any of the source image do not elevate CacheLiveResourcePriority.
         ASSERT_EQ(memoryCache()->priority(imageOutsideCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
     }
     // Force a garbage collection to sweep out the local ImageBitmaps.
     Heap::collectGarbage(BlinkGC::NoHeapPointersOnStack, BlinkGC::GCWithSweep, BlinkGC::ForcedGC);

     // CacheLiveResourcePriroity should return to CacheLiveResourcePriorityLow when no ImageBitmaps reference the image.
     ASSERT_EQ(memoryCache()->priority(imageNoCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
     ASSERT_EQ(memoryCache()->priority(imageExteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
     ASSERT_EQ(memoryCache()->priority(imageOutsideCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);

     // There is still an ImageBitmap that references this image.
     ASSERT_EQ(memoryCache()->priority(imageInteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
     imageBitmapInteriorCrop = nullptr;
 }

 // Verifies that ImageBitmaps constructed from HTMLImageElements hold a reference to the original Image if the HTMLImageElement src is changed.
 TEST_F(ImageBitmapTest, ImageBitmapSourceChanged)
 {
     RefPtrWillBeRawPtr<HTMLImageElement> image = HTMLImageElement::create(*Document::create().get());
     RefPtrWillBeRawPtr<ImageResource> originalImageResource = ImageResource::create(
         StaticBitmapImage::create(m_image).get());
     image->setImageResource(originalImageResource.get());

     const ImageBitmapOptions defaultOptions;
     RefPtrWillBeRawPtr<ImageBitmap> imageBitmap = ImageBitmap::create(image.get(),
         IntRect(0, 0, m_image->width(), m_image->height()),
         &(image->document()), defaultOptions);
     ASSERT_EQ(imageBitmap->bitmapImage()->imageForCurrentFrame(), originalImageResource->image()->imageForCurrentFrame());

     RefPtrWillBeRawPtr<ImageResource> newImageResource = ImageResource::create(
         StaticBitmapImage::create(m_image2).get());
     image->setImageResource(newImageResource.get());

     // The ImageBitmap should contain the same data as the original cached image
     {
         ASSERT_EQ(imageBitmap->bitmapImage()->imageForCurrentFrame(), originalImageResource->image()->imageForCurrentFrame());
         SkImage* image1 = imageBitmap->bitmapImage()->imageForCurrentFrame().get();
         ASSERT_NE(image1, nullptr);
         SkImage* image2 = originalImageResource->image()->imageForCurrentFrame().get();
         ASSERT_NE(image2, nullptr);
         ASSERT_EQ(image1, image2);
     }

     {
         ASSERT_NE(imageBitmap->bitmapImage()->imageForCurrentFrame(), newImageResource->image()->imageForCurrentFrame());
         SkImage* image1 = imageBitmap->bitmapImage()->imageForCurrentFrame().get();
         ASSERT_NE(image1, nullptr);
         SkImage* image2 = newImageResource->image()->imageForCurrentFrame().get();
         ASSERT_NE(image2, nullptr);
         ASSERT_NE(image1, image2);
     }
 }

 } // namespace blink
	/*
	* 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 "core/frame/ImageBitmap.h"

	#include "SkPixelRef.h" // FIXME: qualify this skia header file.
	#include "bindings/core/v8/UnionTypesCore.h"
	#include "core/dom/Document.h"
	#include "core/fetch/ImageResource.h"
	#include "core/fetch/MemoryCache.h"
	#include "core/fetch/MockImageResourceClient.h"
	#include "core/html/HTMLCanvasElement.h"
	#include "core/html/HTMLImageElement.h"
	#include "core/html/HTMLVideoElement.h"
	#include "platform/graphics/StaticBitmapImage.h"
	#include "platform/heap/Handle.h"
	#include "platform/network/ResourceRequest.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "third_party/skia/include/core/SkImage.h"
	#include "third_party/skia/include/core/SkSurface.h"
	#include "wtf/OwnPtr.h"

	namespace blink {

	class ImageBitmapTest : public ::testing::Test {
	protected:
	virtual void SetUp()
	{
	RefPtr<SkSurface> surface = adoptRef(SkSurface::NewRasterN32Premul(10, 10));
	surface->getCanvas()->clear(0xFFFFFFFF);
	m_image = adoptRef(surface->newImageSnapshot());

	RefPtr<SkSurface> surface2 = adoptRef(SkSurface::NewRasterN32Premul(5, 5));
	surface2->getCanvas()->clear(0xAAAAAAAA);
	m_image2 = adoptRef(surface2->newImageSnapshot());

	// Save the global memory cache to restore it upon teardown.
	m_globalMemoryCache = replaceMemoryCacheForTesting(MemoryCache::create());
	}
	virtual void TearDown()
	{
	// Garbage collection is required prior to switching out the
	// test's memory cache; image resources are released, evicting
	// them from the cache.
	Heap::collectGarbage(BlinkGC::NoHeapPointersOnStack, BlinkGC::GCWithSweep, BlinkGC::ForcedGC);

	replaceMemoryCacheForTesting(m_globalMemoryCache.release());
	}

	RefPtr<SkImage> m_image, m_image2;
	Persistent<MemoryCache> m_globalMemoryCache;
	};

	TEST_F(ImageBitmapTest, ImageResourceConsistency)
	{
	const ImageBitmapOptions defaultOptions;
	RefPtrWillBeRawPtr<HTMLImageElement> imageElement = HTMLImageElement::create(*Document::create().get());
	RefPtrWillBeRawPtr<ImageResource> image = ImageResource::create(StaticBitmapImage::create(m_image).get());
	imageElement->setImageResource(image.get());

	RefPtrWillBeRawPtr<ImageBitmap> imageBitmapNoCrop = ImageBitmap::create(imageElement.get(),
	IntRect(0, 0, m_image->width(), m_image->height()),
	&(imageElement->document()), defaultOptions);
	RefPtrWillBeRawPtr<ImageBitmap> imageBitmapInteriorCrop = ImageBitmap::create(imageElement.get(),
	IntRect(m_image->width() / 2, m_image->height() / 2, m_image->width() / 2, m_image->height() / 2),
	&(imageElement->document()), defaultOptions);
	RefPtrWillBeRawPtr<ImageBitmap> imageBitmapExteriorCrop = ImageBitmap::create(imageElement.get(),
	IntRect(-m_image->width() / 2, -m_image->height() / 2, m_image->width(), m_image->height()),
	&(imageElement->document()), defaultOptions);
	RefPtrWillBeRawPtr<ImageBitmap> imageBitmapOutsideCrop = ImageBitmap::create(imageElement.get(),
	IntRect(-m_image->width(), -m_image->height(), m_image->width(), m_image->height()),
	&(imageElement->document()), defaultOptions);

	ASSERT_EQ(imageBitmapNoCrop->bitmapImage()->imageForCurrentFrame(), imageElement->cachedImage()->image()->imageForCurrentFrame());
	ASSERT_NE(imageBitmapInteriorCrop->bitmapImage()->imageForCurrentFrame(), imageElement->cachedImage()->image()->imageForCurrentFrame());
	ASSERT_NE(imageBitmapExteriorCrop->bitmapImage()->imageForCurrentFrame(), imageElement->cachedImage()->image()->imageForCurrentFrame());

	StaticBitmapImage* emptyImage = imageBitmapOutsideCrop->bitmapImage();
	ASSERT_NE(emptyImage->imageForCurrentFrame(), imageElement->cachedImage()->image()->imageForCurrentFrame());
	}

	// Verifies that HTMLImageElements are given an elevated CacheLiveResourcePriority when used to construct an ImageBitmap.
	// ImageBitmaps that have crop rects outside of the bounds of the HTMLImageElement do not have elevated CacheLiveResourcePriority.
	TEST_F(ImageBitmapTest, ImageBitmapLiveResourcePriority)
	{
	RefPtrWillBePersistent<HTMLImageElement> imageNoCrop = HTMLImageElement::create(*Document::create().get());
	RefPtrWillBeRawPtr<ImageResource> cachedImageNoCrop = ImageResource::create(ResourceRequest("http://foo.com/1"),
	StaticBitmapImage::create(m_image).get());
	imageNoCrop->setImageResource(cachedImageNoCrop.get());

	RefPtrWillBePersistent<HTMLImageElement> imageInteriorCrop = HTMLImageElement::create(*Document::create().get());
	RefPtrWillBeRawPtr<ImageResource> cachedImageInteriorCrop = ImageResource::create(ResourceRequest("http://foo.com/2"),
	StaticBitmapImage::create(m_image).get());
	imageInteriorCrop->setImageResource(cachedImageInteriorCrop.get());

	RefPtrWillBePersistent<HTMLImageElement> imageExteriorCrop = HTMLImageElement::create(*Document::create().get());
	RefPtrWillBeRawPtr<ImageResource> cachedImageExteriorCrop = ImageResource::create(ResourceRequest("http://foo.com/3"),
	StaticBitmapImage::create(m_image).get());
	imageExteriorCrop->setImageResource(cachedImageExteriorCrop.get());

	RefPtrWillBePersistent<HTMLImageElement> imageOutsideCrop = HTMLImageElement::create(*Document::create().get());
	RefPtrWillBeRawPtr<ImageResource> cachedImageOutsideCrop = ImageResource::create(ResourceRequest("http://foo.com/4"),
	StaticBitmapImage::create(m_image).get());
	imageOutsideCrop->setImageResource(cachedImageOutsideCrop.get());

	MockImageResourceClient mockClient1(cachedImageNoCrop);
	MockImageResourceClient mockClient2(cachedImageInteriorCrop);
	MockImageResourceClient mockClient3(cachedImageExteriorCrop);
	MockImageResourceClient mockClient4(cachedImageOutsideCrop);

	memoryCache()->add(cachedImageNoCrop.get());
	memoryCache()->add(cachedImageInteriorCrop.get());
	memoryCache()->add(cachedImageExteriorCrop.get());
	memoryCache()->add(cachedImageOutsideCrop.get());
	memoryCache()->updateDecodedResource(cachedImageNoCrop.get(), UpdateForPropertyChange);
	memoryCache()->updateDecodedResource(cachedImageInteriorCrop.get(), UpdateForPropertyChange);
	memoryCache()->updateDecodedResource(cachedImageExteriorCrop.get(), UpdateForPropertyChange);
	memoryCache()->updateDecodedResource(cachedImageOutsideCrop.get(), UpdateForPropertyChange);

	// HTMLImageElements should default to CacheLiveResourcePriorityLow.
	ASSERT_EQ(memoryCache()->priority(imageNoCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
	ASSERT_EQ(memoryCache()->priority(imageInteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
	ASSERT_EQ(memoryCache()->priority(imageExteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
	ASSERT_EQ(memoryCache()->priority(imageOutsideCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);

	const ImageBitmapOptions defaultOptions;
	RefPtrWillBePersistent<ImageBitmap> imageBitmapInteriorCrop = ImageBitmap::create(imageInteriorCrop.get(),
	IntRect(m_image->width() / 2, m_image->height() / 2, m_image->width(), m_image->height()),
	&(imageInteriorCrop->document()), defaultOptions);
	{
	RefPtrWillBePersistent<ImageBitmap> imageBitmapNoCrop = ImageBitmap::create(imageNoCrop.get(),
	IntRect(0, 0, m_image->width(), m_image->height()),
	&(imageNoCrop->document()), defaultOptions);
	RefPtrWillBePersistent<ImageBitmap> imageBitmapInteriorCrop2 = ImageBitmap::create(imageInteriorCrop.get(),
	IntRect(m_image->width() / 2, m_image->height() / 2, m_image->width(), m_image->height()),
	&(imageInteriorCrop->document()), defaultOptions);
	RefPtrWillBePersistent<ImageBitmap> imageBitmapExteriorCrop = ImageBitmap::create(imageExteriorCrop.get(),
	IntRect(-m_image->width() / 2, -m_image->height() / 2, m_image->width(), m_image->height()),
	&(imageExteriorCrop->document()), defaultOptions);
	RefPtrWillBePersistent<ImageBitmap> imageBitmapOutsideCrop = ImageBitmap::create(imageOutsideCrop.get(),
	IntRect(-m_image->width(), -m_image->height(), m_image->width(), m_image->height()),
	&(imageOutsideCrop->document()), defaultOptions);

	// Images are not referenced by ImageBitmap anymore, so always CacheLiveResourcePriorityLow
	ASSERT_EQ(memoryCache()->priority(imageNoCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
	ASSERT_EQ(memoryCache()->priority(imageInteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
	ASSERT_EQ(memoryCache()->priority(imageExteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);

	// ImageBitmaps that do not contain any of the source image do not elevate CacheLiveResourcePriority.
	ASSERT_EQ(memoryCache()->priority(imageOutsideCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
	}
	// Force a garbage collection to sweep out the local ImageBitmaps.
	Heap::collectGarbage(BlinkGC::NoHeapPointersOnStack, BlinkGC::GCWithSweep, BlinkGC::ForcedGC);

	// CacheLiveResourcePriroity should return to CacheLiveResourcePriorityLow when no ImageBitmaps reference the image.
	ASSERT_EQ(memoryCache()->priority(imageNoCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
	ASSERT_EQ(memoryCache()->priority(imageExteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
	ASSERT_EQ(memoryCache()->priority(imageOutsideCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);

	// There is still an ImageBitmap that references this image.
	ASSERT_EQ(memoryCache()->priority(imageInteriorCrop->cachedImage()), MemoryCacheLiveResourcePriorityLow);
	imageBitmapInteriorCrop = nullptr;
	}

	// Verifies that ImageBitmaps constructed from HTMLImageElements hold a reference to the original Image if the HTMLImageElement src is changed.
	TEST_F(ImageBitmapTest, ImageBitmapSourceChanged)
	{
	RefPtrWillBeRawPtr<HTMLImageElement> image = HTMLImageElement::create(*Document::create().get());
	RefPtrWillBeRawPtr<ImageResource> originalImageResource = ImageResource::create(
	StaticBitmapImage::create(m_image).get());
	image->setImageResource(originalImageResource.get());

	const ImageBitmapOptions defaultOptions;
	RefPtrWillBeRawPtr<ImageBitmap> imageBitmap = ImageBitmap::create(image.get(),
	IntRect(0, 0, m_image->width(), m_image->height()),
	&(image->document()), defaultOptions);
	ASSERT_EQ(imageBitmap->bitmapImage()->imageForCurrentFrame(), originalImageResource->image()->imageForCurrentFrame());

	RefPtrWillBeRawPtr<ImageResource> newImageResource = ImageResource::create(
	StaticBitmapImage::create(m_image2).get());
	image->setImageResource(newImageResource.get());

	// The ImageBitmap should contain the same data as the original cached image
	{
	ASSERT_EQ(imageBitmap->bitmapImage()->imageForCurrentFrame(), originalImageResource->image()->imageForCurrentFrame());
	SkImage* image1 = imageBitmap->bitmapImage()->imageForCurrentFrame().get();
	ASSERT_NE(image1, nullptr);
	SkImage* image2 = originalImageResource->image()->imageForCurrentFrame().get();
	ASSERT_NE(image2, nullptr);
	ASSERT_EQ(image1, image2);
	}

	{
	ASSERT_NE(imageBitmap->bitmapImage()->imageForCurrentFrame(), newImageResource->image()->imageForCurrentFrame());
	SkImage* image1 = imageBitmap->bitmapImage()->imageForCurrentFrame().get();
	ASSERT_NE(image1, nullptr);
	SkImage* image2 = newImageResource->image()->imageForCurrentFrame().get();
	ASSERT_NE(image2, nullptr);
	ASSERT_NE(image1, image2);
	}
	}

	} // namespace blink