third_party/WebKit/Source/core/fetch/ImageResourceTest.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 "core/fetch/ImageResource.h"

#include "core/fetch/MemoryCache.h"
#include "core/fetch/MockResourceClients.h"
#include "core/fetch/ResourceFetcher.h"
#include "core/fetch/ResourceLoader.h"
#include "core/fetch/UniqueIdentifier.h"
#include "platform/SharedBuffer.h"
#include "platform/exported/WrappedResourceResponse.h"
#include "platform/graphics/Image.h"
#include "platform/scheduler/test/fake_web_task_runner.h"
#include "platform/testing/URLTestHelpers.h"
#include "platform/testing/UnitTestHelpers.h"
#include "public/platform/Platform.h"
#include "public/platform/WebURL.h"
#include "public/platform/WebURLLoaderMockFactory.h"
#include "public/platform/WebURLResponse.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "wtf/PtrUtil.h"
#include <memory>

namespace blink {

namespace {

// An image of size 1x1.
static Vector<unsigned char> jpegImage() {
  Vector<unsigned char> jpeg;

  static const unsigned char data[] = {
      0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 0x4a, 0x46, 0x49, 0x46, 0x00, 0x01,
      0x01, 0x01, 0x00, 0x48, 0x00, 0x48, 0x00, 0x00, 0xff, 0xfe, 0x00, 0x13,
      0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x20, 0x77, 0x69, 0x74, 0x68,
      0x20, 0x47, 0x49, 0x4d, 0x50, 0xff, 0xdb, 0x00, 0x43, 0x00, 0x05, 0x03,
      0x04, 0x04, 0x04, 0x03, 0x05, 0x04, 0x04, 0x04, 0x05, 0x05, 0x05, 0x06,
      0x07, 0x0c, 0x08, 0x07, 0x07, 0x07, 0x07, 0x0f, 0x0b, 0x0b, 0x09, 0x0c,
      0x11, 0x0f, 0x12, 0x12, 0x11, 0x0f, 0x11, 0x11, 0x13, 0x16, 0x1c, 0x17,
      0x13, 0x14, 0x1a, 0x15, 0x11, 0x11, 0x18, 0x21, 0x18, 0x1a, 0x1d, 0x1d,
      0x1f, 0x1f, 0x1f, 0x13, 0x17, 0x22, 0x24, 0x22, 0x1e, 0x24, 0x1c, 0x1e,
      0x1f, 0x1e, 0xff, 0xdb, 0x00, 0x43, 0x01, 0x05, 0x05, 0x05, 0x07, 0x06,
      0x07, 0x0e, 0x08, 0x08, 0x0e, 0x1e, 0x14, 0x11, 0x14, 0x1e, 0x1e, 0x1e,
      0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
      0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
      0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
      0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0xff,
      0xc0, 0x00, 0x11, 0x08, 0x00, 0x01, 0x00, 0x01, 0x03, 0x01, 0x22, 0x00,
      0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff, 0xc4, 0x00, 0x15, 0x00, 0x01,
      0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x08, 0xff, 0xc4, 0x00, 0x14, 0x10, 0x01, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0xff, 0xc4, 0x00, 0x14, 0x01, 0x01, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0xff, 0xc4, 0x00, 0x14, 0x11, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff,
      0xda, 0x00, 0x0c, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f,
      0x00, 0xb2, 0xc0, 0x07, 0xff, 0xd9};

  jpeg.append(data, sizeof(data));
  return jpeg;
}

// An image of size 50x50.
static Vector<unsigned char> jpegImage2() {
  Vector<unsigned char> jpeg;

  static const unsigned char data[] = {
      0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 0x4a, 0x46, 0x49, 0x46, 0x00, 0x01,
      0x01, 0x01, 0x00, 0x48, 0x00, 0x48, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x43,
      0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xdb, 0x00, 0x43, 0x01, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
      0xff, 0xff, 0xff, 0xc0, 0x00, 0x11, 0x08, 0x00, 0x32, 0x00, 0x32, 0x03,
      0x01, 0x22, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff, 0xc4, 0x00,
      0x14, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xc4, 0x00, 0x14, 0x10,
      0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xc4, 0x00, 0x15, 0x01, 0x01, 0x01,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x02, 0xff, 0xc4, 0x00, 0x14, 0x11, 0x01, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0xff, 0xda, 0x00, 0x0c, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03,
      0x11, 0x00, 0x3f, 0x00, 0x00, 0x94, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x03, 0xff, 0xd9};

  jpeg.append(data, sizeof(data));
  return jpeg;
}

static Vector<unsigned char> svgImage() {
  static const char data[] =
      "<svg width=\"200\" height=\"200\" xmlns=\"http://www.w3.org/2000/svg\" "
      "xmlns:xlink=\"http://www.w3.org/1999/xlink\">"
      "<rect x=\"0\" y=\"0\" width=\"100px\" height=\"100px\" fill=\"red\"/>"
      "</svg>";

  Vector<unsigned char> svg;
  svg.append(data, strlen(data));
  return svg;
}

static Vector<unsigned char> svgImage2() {
  static const char data[] =
      "<svg width=\"300\" height=\"300\" xmlns=\"http://www.w3.org/2000/svg\" "
      "xmlns:xlink=\"http://www.w3.org/1999/xlink\">"
      "<rect x=\"0\" y=\"0\" width=\"200px\" height=\"200px\" fill=\"green\"/>"
      "</svg>";

  Vector<unsigned char> svg;
  svg.append(data, strlen(data));
  return svg;
}

void receiveResponse(ImageResource* imageResource,
                     const KURL& url,
                     const AtomicString& mimeType,
                     const Vector<unsigned char>& data) {
  ResourceResponse response;
  response.setURL(url);
  response.setHTTPStatusCode(200);
  response.setMimeType(mimeType);
  imageResource->responseReceived(response, nullptr);
  imageResource->appendData(reinterpret_cast<const char*>(data.data()),
                            data.size());
  imageResource->finish();
}
}

class ImageResourceTestMockFetchContext : public FetchContext {
 public:
  static ImageResourceTestMockFetchContext* create() {
    return new ImageResourceTestMockFetchContext;
  }

  virtual ~ImageResourceTestMockFetchContext() {}

  bool allowImage(bool imagesEnabled, const KURL&) const override {
    return true;
  }
  bool canRequest(Resource::Type,
                  const ResourceRequest&,
                  const KURL&,
                  const ResourceLoaderOptions&,
                  bool forPreload,
                  FetchRequest::OriginRestriction) const override {
    return true;
  }
  bool shouldLoadNewResource(Resource::Type) const override { return true; }
  WebTaskRunner* loadingTaskRunner() const override { return m_runner.get(); }

 private:
  ImageResourceTestMockFetchContext()
      : m_runner(wrapUnique(new scheduler::FakeWebTaskRunner)) {}

  std::unique_ptr<scheduler::FakeWebTaskRunner> m_runner;
};

TEST(ImageResourceTest, MultipartImage) {
  ResourceFetcher* fetcher =
      ResourceFetcher::create(ImageResourceTestMockFetchContext::create());
  KURL testURL(ParsedURLString, "http://www.test.com/cancelTest.html");
  URLTestHelpers::registerMockedURLLoad(testURL, "cancelTest.html",
                                        "text/html");

  // Emulate starting a real load, but don't expect any "real"
  // WebURLLoaderClient callbacks.
  ImageResource* cachedImage = ImageResource::create(ResourceRequest(testURL));
  cachedImage->setIdentifier(createUniqueIdentifier());
  fetcher->startLoad(cachedImage);
  Platform::current()->getURLLoaderMockFactory()->unregisterURL(testURL);

  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(cachedImage);
  EXPECT_EQ(Resource::Pending, cachedImage->getStatus());

  // Send the multipart response. No image or data buffer is created. Note that
  // the response must be routed through ResourceLoader to ensure the load is
  // flagged as multipart.
  ResourceResponse multipartResponse(KURL(), "multipart/x-mixed-replace", 0,
                                     nullAtom, String());
  multipartResponse.setMultipartBoundary("boundary", strlen("boundary"));
  cachedImage->loader()->didReceiveResponse(
      nullptr, WrappedResourceResponse(multipartResponse), nullptr);
  EXPECT_FALSE(cachedImage->resourceBuffer());
  EXPECT_FALSE(cachedImage->hasImage());
  EXPECT_EQ(0, client->imageChangedCount());
  EXPECT_FALSE(client->notifyFinishedCalled());
  EXPECT_EQ("multipart/x-mixed-replace", cachedImage->response().mimeType());

  const char firstPart[] =
      "--boundary\n"
      "Content-Type: image/svg+xml\n\n";
  cachedImage->appendData(firstPart, strlen(firstPart));
  // Send the response for the first real part. No image or data buffer is
  // created.
  EXPECT_FALSE(cachedImage->resourceBuffer());
  EXPECT_FALSE(cachedImage->hasImage());
  EXPECT_EQ(0, client->imageChangedCount());
  EXPECT_FALSE(client->notifyFinishedCalled());
  EXPECT_EQ("image/svg+xml", cachedImage->response().mimeType());

  const char secondPart[] =
      "<svg xmlns='http://www.w3.org/2000/svg' width='1' height='1'><rect "
      "width='1' height='1' fill='green'/></svg>\n";
  // The first bytes arrive. The data buffer is created, but no image is
  // created.
  cachedImage->appendData(secondPart, strlen(secondPart));
  EXPECT_TRUE(cachedImage->resourceBuffer());
  EXPECT_FALSE(cachedImage->hasImage());
  EXPECT_EQ(0, client->imageChangedCount());
  EXPECT_FALSE(client->notifyFinishedCalled());

  // Add a client to check an assertion error doesn't happen
  // (crbug.com/630983).
  Persistent<MockImageResourceClient> client2 =
      new MockImageResourceClient(cachedImage);
  EXPECT_EQ(0, client2->imageChangedCount());
  EXPECT_FALSE(client2->notifyFinishedCalled());

  const char thirdPart[] = "--boundary";
  cachedImage->appendData(thirdPart, strlen(thirdPart));
  ASSERT_TRUE(cachedImage->resourceBuffer());
  EXPECT_EQ(strlen(secondPart) - 1, cachedImage->resourceBuffer()->size());

  // This part finishes. The image is created, callbacks are sent, and the data
  // buffer is cleared.
  cachedImage->loader()->didFinishLoading(nullptr, 0.0, 0);
  EXPECT_TRUE(cachedImage->resourceBuffer());
  EXPECT_FALSE(cachedImage->errorOccurred());
  ASSERT_TRUE(cachedImage->hasImage());
  EXPECT_FALSE(cachedImage->getImage()->isNull());
  EXPECT_EQ(1, cachedImage->getImage()->width());
  EXPECT_EQ(1, cachedImage->getImage()->height());
  EXPECT_EQ(1, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_EQ(1, client2->imageChangedCount());
  EXPECT_TRUE(client2->notifyFinishedCalled());
}

TEST(ImageResourceTest, CancelOnDetach) {
  KURL testURL(ParsedURLString, "http://www.test.com/cancelTest.html");
  URLTestHelpers::registerMockedURLLoad(testURL, "cancelTest.html",
                                        "text/html");

  ResourceFetcher* fetcher =
      ResourceFetcher::create(ImageResourceTestMockFetchContext::create());

  // Emulate starting a real load.
  ImageResource* cachedImage = ImageResource::create(ResourceRequest(testURL));
  cachedImage->setIdentifier(createUniqueIdentifier());

  fetcher->startLoad(cachedImage);
  memoryCache()->add(cachedImage);

  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(cachedImage);
  EXPECT_EQ(Resource::Pending, cachedImage->getStatus());

  // The load should still be alive, but a timer should be started to cancel the
  // load inside removeClient().
  client->removeAsClient();
  EXPECT_EQ(Resource::Pending, cachedImage->getStatus());
  EXPECT_TRUE(memoryCache()->resourceForURL(testURL));

  // Trigger the cancel timer, ensure the load was cancelled and the resource
  // was evicted from the cache.
  blink::testing::runPendingTasks();
  EXPECT_EQ(Resource::LoadError, cachedImage->getStatus());
  EXPECT_FALSE(memoryCache()->resourceForURL(testURL));

  Platform::current()->getURLLoaderMockFactory()->unregisterURL(testURL);
}

TEST(ImageResourceTest, DecodedDataRemainsWhileHasClients) {
  ImageResource* cachedImage = ImageResource::create(ResourceRequest());
  cachedImage->setStatus(Resource::Pending);

  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(cachedImage);

  // Send the image response.
  cachedImage->responseReceived(
      ResourceResponse(KURL(), "multipart/x-mixed-replace", 0, nullAtom,
                       String()),
      nullptr);

  Vector<unsigned char> jpeg = jpegImage();
  cachedImage->responseReceived(
      ResourceResponse(KURL(), "image/jpeg", jpeg.size(), nullAtom, String()),
      nullptr);
  cachedImage->appendData(reinterpret_cast<const char*>(jpeg.data()),
                          jpeg.size());
  cachedImage->finish();
  EXPECT_FALSE(cachedImage->errorOccurred());
  ASSERT_TRUE(cachedImage->hasImage());
  EXPECT_FALSE(cachedImage->getImage()->isNull());
  EXPECT_TRUE(client->notifyFinishedCalled());

  // The prune comes when the ImageResource still has clients. The image should
  // not be deleted.
  cachedImage->prune();
  EXPECT_TRUE(cachedImage->isAlive());
  ASSERT_TRUE(cachedImage->hasImage());
  EXPECT_FALSE(cachedImage->getImage()->isNull());

  // The ImageResource no longer has clients. The decoded image data should be
  // deleted by prune.
  client->removeAsClient();
  cachedImage->prune();
  EXPECT_FALSE(cachedImage->isAlive());
  EXPECT_TRUE(cachedImage->hasImage());
  // TODO(hajimehoshi): Should check cachedImage doesn't have decoded image
  // data.
}

TEST(ImageResourceTest, UpdateBitmapImages) {
  ImageResource* cachedImage = ImageResource::create(ResourceRequest());
  cachedImage->setStatus(Resource::Pending);

  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(cachedImage);

  // Send the image response.
  Vector<unsigned char> jpeg = jpegImage();
  cachedImage->responseReceived(
      ResourceResponse(KURL(), "image/jpeg", jpeg.size(), nullAtom, String()),
      nullptr);
  cachedImage->appendData(reinterpret_cast<const char*>(jpeg.data()),
                          jpeg.size());
  cachedImage->finish();
  EXPECT_FALSE(cachedImage->errorOccurred());
  ASSERT_TRUE(cachedImage->hasImage());
  EXPECT_FALSE(cachedImage->getImage()->isNull());
  EXPECT_EQ(2, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_TRUE(cachedImage->getImage()->isBitmapImage());
}

TEST(ImageResourceTest, ReloadIfLoFi) {
  KURL testURL(ParsedURLString, "http://www.test.com/cancelTest.html");
  URLTestHelpers::registerMockedURLLoad(testURL, "cancelTest.html",
                                        "text/html");
  ResourceRequest request = ResourceRequest(testURL);
  request.setLoFiState(WebURLRequest::LoFiOn);
  ImageResource* cachedImage = ImageResource::create(request);
  cachedImage->setStatus(Resource::Pending);

  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(cachedImage);
  ResourceFetcher* fetcher =
      ResourceFetcher::create(ImageResourceTestMockFetchContext::create());

  // Send the image response.
  Vector<unsigned char> jpeg = jpegImage();
  ResourceResponse resourceResponse(KURL(), "image/jpeg", jpeg.size(), nullAtom,
                                    String());
  resourceResponse.addHTTPHeaderField("chrome-proxy", "q=low");

  cachedImage->responseReceived(resourceResponse, nullptr);
  cachedImage->appendData(reinterpret_cast<const char*>(jpeg.data()),
                          jpeg.size());
  cachedImage->finish();
  EXPECT_FALSE(cachedImage->errorOccurred());
  ASSERT_TRUE(cachedImage->hasImage());
  EXPECT_FALSE(cachedImage->getImage()->isNull());
  EXPECT_EQ(2, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_TRUE(cachedImage->getImage()->isBitmapImage());
  EXPECT_EQ(1, cachedImage->getImage()->width());
  EXPECT_EQ(1, cachedImage->getImage()->height());

  cachedImage->reloadIfLoFi(fetcher);
  EXPECT_FALSE(cachedImage->errorOccurred());
  EXPECT_FALSE(cachedImage->resourceBuffer());
  EXPECT_FALSE(cachedImage->hasImage());
  EXPECT_EQ(3, client->imageChangedCount());

  Vector<unsigned char> jpeg2 = jpegImage2();
  cachedImage->loader()->didReceiveResponse(
      nullptr, WrappedResourceResponse(resourceResponse), nullptr);
  cachedImage->loader()->didReceiveData(
      nullptr, reinterpret_cast<const char*>(jpeg2.data()), jpeg2.size(),
      jpeg2.size(), jpeg2.size());
  cachedImage->loader()->didFinishLoading(nullptr, 0.0, jpeg2.size());
  EXPECT_FALSE(cachedImage->errorOccurred());
  ASSERT_TRUE(cachedImage->hasImage());
  EXPECT_FALSE(cachedImage->getImage()->isNull());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_TRUE(cachedImage->getImage()->isBitmapImage());
  EXPECT_EQ(50, cachedImage->getImage()->width());
  EXPECT_EQ(50, cachedImage->getImage()->height());
}

TEST(ImageResourceTest, SVGImage) {
  KURL url(ParsedURLString, "http://127.0.0.1:8000/foo");
  ImageResource* imageResource = ImageResource::create(ResourceRequest(url));
  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(imageResource);

  receiveResponse(imageResource, url, "image/svg+xml", svgImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(1, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_FALSE(imageResource->getImage()->isBitmapImage());
}

TEST(ImageResourceTest, SuccessfulRevalidationJpeg) {
  KURL url(ParsedURLString, "http://127.0.0.1:8000/foo");
  ImageResource* imageResource = ImageResource::create(ResourceRequest(url));
  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(imageResource);

  receiveResponse(imageResource, url, "image/jpeg", jpegImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(2, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_TRUE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(1, imageResource->getImage()->width());
  EXPECT_EQ(1, imageResource->getImage()->height());

  imageResource->setRevalidatingRequest(ResourceRequest(url));
  ResourceResponse response;
  response.setURL(url);
  response.setHTTPStatusCode(304);

  imageResource->responseReceived(response, nullptr);

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(2, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_TRUE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(1, imageResource->getImage()->width());
  EXPECT_EQ(1, imageResource->getImage()->height());
}

TEST(ImageResourceTest, SuccessfulRevalidationSvg) {
  KURL url(ParsedURLString, "http://127.0.0.1:8000/foo");
  ImageResource* imageResource = ImageResource::create(ResourceRequest(url));
  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(imageResource);

  receiveResponse(imageResource, url, "image/svg+xml", svgImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(1, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_FALSE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(200, imageResource->getImage()->width());
  EXPECT_EQ(200, imageResource->getImage()->height());

  imageResource->setRevalidatingRequest(ResourceRequest(url));
  ResourceResponse response;
  response.setURL(url);
  response.setHTTPStatusCode(304);
  imageResource->responseReceived(response, nullptr);

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(1, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_FALSE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(200, imageResource->getImage()->width());
  EXPECT_EQ(200, imageResource->getImage()->height());
}

TEST(ImageResourceTest, FailedRevalidationJpegToJpeg) {
  KURL url(ParsedURLString, "http://127.0.0.1:8000/foo");
  ImageResource* imageResource = ImageResource::create(ResourceRequest(url));
  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(imageResource);

  receiveResponse(imageResource, url, "image/jpeg", jpegImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(2, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_TRUE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(1, imageResource->getImage()->width());
  EXPECT_EQ(1, imageResource->getImage()->height());

  imageResource->setRevalidatingRequest(ResourceRequest(url));
  receiveResponse(imageResource, url, "image/jpeg", jpegImage2());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(4, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_TRUE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(50, imageResource->getImage()->width());
  EXPECT_EQ(50, imageResource->getImage()->height());
}

TEST(ImageResourceTest, FailedRevalidationJpegToSvg) {
  KURL url(ParsedURLString, "http://127.0.0.1:8000/foo");
  ImageResource* imageResource = ImageResource::create(ResourceRequest(url));
  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(imageResource);

  receiveResponse(imageResource, url, "image/jpeg", jpegImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(2, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_TRUE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(1, imageResource->getImage()->width());
  EXPECT_EQ(1, imageResource->getImage()->height());

  imageResource->setRevalidatingRequest(ResourceRequest(url));
  receiveResponse(imageResource, url, "image/svg+xml", svgImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(3, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_FALSE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(200, imageResource->getImage()->width());
  EXPECT_EQ(200, imageResource->getImage()->height());
}

TEST(ImageResourceTest, FailedRevalidationSvgToJpeg) {
  KURL url(ParsedURLString, "http://127.0.0.1:8000/foo");
  ImageResource* imageResource = ImageResource::create(ResourceRequest(url));
  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(imageResource);

  receiveResponse(imageResource, url, "image/svg+xml", svgImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(1, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_FALSE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(200, imageResource->getImage()->width());
  EXPECT_EQ(200, imageResource->getImage()->height());

  imageResource->setRevalidatingRequest(ResourceRequest(url));
  receiveResponse(imageResource, url, "image/jpeg", jpegImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(3, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_TRUE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(1, imageResource->getImage()->width());
  EXPECT_EQ(1, imageResource->getImage()->height());
}

TEST(ImageResourceTest, FailedRevalidationSvgToSvg) {
  KURL url(ParsedURLString, "http://127.0.0.1:8000/foo");
  ImageResource* imageResource = ImageResource::create(ResourceRequest(url));
  Persistent<MockImageResourceClient> client =
      new MockImageResourceClient(imageResource);

  receiveResponse(imageResource, url, "image/svg+xml", svgImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(client->imageChangedCount(), 1);
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_FALSE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(200, imageResource->getImage()->width());
  EXPECT_EQ(200, imageResource->getImage()->height());

  imageResource->setRevalidatingRequest(ResourceRequest(url));
  receiveResponse(imageResource, url, "image/svg+xml", svgImage2());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(2, client->imageChangedCount());
  EXPECT_TRUE(client->notifyFinishedCalled());
  EXPECT_FALSE(imageResource->getImage()->isBitmapImage());
  EXPECT_EQ(300, imageResource->getImage()->width());
  EXPECT_EQ(300, imageResource->getImage()->height());
}

// Tests for pruning.

TEST(ImageResourceTest, AddClientAfterPrune) {
  KURL url(ParsedURLString, "http://127.0.0.1:8000/foo");
  ImageResource* imageResource = ImageResource::create(ResourceRequest(url));

  // Adds a ResourceClient but not ImageResourceObserver.
  Persistent<MockResourceClient> client1 =
      new MockResourceClient(imageResource);

  receiveResponse(imageResource, url, "image/jpeg", jpegImage());

  EXPECT_FALSE(imageResource->errorOccurred());
  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(1, imageResource->getImage()->width());
  EXPECT_EQ(1, imageResource->getImage()->height());
  EXPECT_TRUE(client1->notifyFinishedCalled());

  client1->removeAsClient();

  EXPECT_FALSE(imageResource->isAlive());

  imageResource->prune();

  EXPECT_TRUE(imageResource->hasImage());

  // Re-adds a ResourceClient but not ImageResourceObserver.
  Persistent<MockResourceClient> client2 =
      new MockResourceClient(imageResource);

  ASSERT_TRUE(imageResource->hasImage());
  EXPECT_FALSE(imageResource->getImage()->isNull());
  EXPECT_EQ(1, imageResource->getImage()->width());
  EXPECT_EQ(1, imageResource->getImage()->height());
  EXPECT_TRUE(client2->notifyFinishedCalled());
}

TEST(ImageResourceTest, CancelOnDecodeError) {
  KURL testURL(ParsedURLString, "http://www.test.com/cancelTest.html");
  URLTestHelpers::registerMockedURLLoad(testURL, "cancelTest.html",
                                        "text/html");

  ResourceFetcher* fetcher =
      ResourceFetcher::create(ImageResourceTestMockFetchContext::create());
  FetchRequest request(testURL, FetchInitiatorInfo());
  ImageResource* cachedImage = ImageResource::fetch(request, fetcher);
  Platform::current()->getURLLoaderMockFactory()->unregisterURL(testURL);

  cachedImage->loader()->didReceiveResponse(
      nullptr, WrappedResourceResponse(ResourceResponse(
                   testURL, "image/jpeg", 18, nullAtom, String())),
      nullptr);
  cachedImage->loader()->didReceiveData(nullptr, "notactuallyanimage", 18, 18,
                                        18);
  EXPECT_EQ(Resource::DecodeError, cachedImage->getStatus());
  EXPECT_FALSE(cachedImage->isLoading());
}

}  // namespace blink