extensions/browser/image_loader_unittest.cc - platform/external/chromium_org - Git at Google

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include "extensions/browser/image_loader.h"

 #include "base/files/file_path.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/common/chrome_paths.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_browser_thread.h"
 #include "extensions/browser/component_extension_resource_manager.h"
 #include "extensions/browser/extensions_browser_client.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_icon_set.h"
 #include "extensions/common/extension_resource.h"
 #include "extensions/common/manifest.h"
 #include "extensions/common/manifest_handlers/icons_handler.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_family.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/size.h"

 #if defined(OS_CHROMEOS)
 #include "ui/file_manager/grit/file_manager_resources.h"
 #endif

 using content::BrowserThread;
 using extensions::Extension;
 using extensions::ExtensionResource;
 using extensions::ImageLoader;
 using extensions::Manifest;
 using extensions::UnloadedExtensionInfo;

 class ImageLoaderTest : public testing::Test {
  public:
   ImageLoaderTest()
       : image_loaded_count_(0),
         quit_in_image_loaded_(false),
         ui_thread_(BrowserThread::UI, &ui_loop_),
         file_thread_(BrowserThread::FILE),
         io_thread_(BrowserThread::IO) {
   }

   void OnImageLoaded(const gfx::Image& image) {
     image_loaded_count_++;
     if (quit_in_image_loaded_)
       base::MessageLoop::current()->Quit();
     image_ = image;
   }

   void OnImageFamilyLoaded(const gfx::ImageFamily& image_family) {
     image_loaded_count_++;
     if (quit_in_image_loaded_)
       base::MessageLoop::current()->Quit();
     image_family_ = image_family;
   }

   void WaitForImageLoad() {
     quit_in_image_loaded_ = true;
     base::MessageLoop::current()->Run();
     quit_in_image_loaded_ = false;
   }

   int image_loaded_count() {
     int result = image_loaded_count_;
     image_loaded_count_ = 0;
     return result;
   }

   scoped_refptr<Extension> CreateExtension(const char* name,
                                            Manifest::Location location) {
     // Create and load an extension.
     base::FilePath test_file;
     if (!PathService::Get(chrome::DIR_TEST_DATA, &test_file)) {
       EXPECT_FALSE(true);
       return NULL;
     }
     test_file = test_file.AppendASCII("extensions")
                          .AppendASCII(name);
     int error_code = 0;
     std::string error;
     JSONFileValueSerializer serializer(test_file.AppendASCII("app.json"));
     scoped_ptr<base::DictionaryValue> valid_value(
         static_cast<base::DictionaryValue*>(serializer.Deserialize(&error_code,
                                                                    &error)));
     EXPECT_EQ(0, error_code) << error;
     if (error_code != 0)
       return NULL;

     EXPECT_TRUE(valid_value.get());
     if (!valid_value)
       return NULL;

     if (location == Manifest::COMPONENT) {
       if (!PathService::Get(chrome::DIR_RESOURCES, &test_file)) {
         EXPECT_FALSE(true);
         return NULL;
       }
       test_file = test_file.AppendASCII(name);
     }
     return Extension::Create(test_file, location, *valid_value,
                              Extension::NO_FLAGS, &error);
   }

   gfx::Image image_;
   gfx::ImageFamily image_family_;

  private:
   virtual void SetUp() OVERRIDE {
     testing::Test::SetUp();
     file_thread_.Start();
     io_thread_.Start();
   }

   int image_loaded_count_;
   bool quit_in_image_loaded_;
   base::MessageLoop ui_loop_;
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread file_thread_;
   content::TestBrowserThread io_thread_;
 };

 // Tests loading an image works correctly.
 TEST_F(ImageLoaderTest, LoadImage) {
   scoped_refptr<Extension> extension(CreateExtension(
       "image_loading_tracker", Manifest::INVALID_LOCATION));
   ASSERT_TRUE(extension.get() != NULL);

   ExtensionResource image_resource = extensions::IconsInfo::GetIconResource(
       extension.get(),
       extension_misc::EXTENSION_ICON_SMALLISH,
       ExtensionIconSet::MATCH_EXACTLY);
   gfx::Size max_size(extension_misc::EXTENSION_ICON_SMALLISH,
                      extension_misc::EXTENSION_ICON_SMALLISH);
   ImageLoader loader;
   loader.LoadImageAsync(extension.get(),
                         image_resource,
                         max_size,
                         base::Bind(&ImageLoaderTest::OnImageLoaded,
                                    base::Unretained(this)));

   // The image isn't cached, so we should not have received notification.
   EXPECT_EQ(0, image_loaded_count());

   WaitForImageLoad();

   // We should have gotten the image.
   EXPECT_EQ(1, image_loaded_count());

   // Check that the image was loaded.
   EXPECT_EQ(extension_misc::EXTENSION_ICON_SMALLISH,
             image_.ToSkBitmap()->width());
 }

 // Tests deleting an extension while waiting for the image to load doesn't cause
 // problems.
 TEST_F(ImageLoaderTest, DeleteExtensionWhileWaitingForCache) {
   scoped_refptr<Extension> extension(CreateExtension(
       "image_loading_tracker", Manifest::INVALID_LOCATION));
   ASSERT_TRUE(extension.get() != NULL);

   ExtensionResource image_resource = extensions::IconsInfo::GetIconResource(
       extension.get(),
       extension_misc::EXTENSION_ICON_SMALLISH,
       ExtensionIconSet::MATCH_EXACTLY);
   gfx::Size max_size(extension_misc::EXTENSION_ICON_SMALLISH,
                      extension_misc::EXTENSION_ICON_SMALLISH);
   ImageLoader loader;
   std::set<int> sizes;
   sizes.insert(extension_misc::EXTENSION_ICON_SMALLISH);
   loader.LoadImageAsync(extension.get(),
                         image_resource,
                         max_size,
                         base::Bind(&ImageLoaderTest::OnImageLoaded,
                                    base::Unretained(this)));

   // The image isn't cached, so we should not have received notification.
   EXPECT_EQ(0, image_loaded_count());

   // Send out notification the extension was uninstalled.
   UnloadedExtensionInfo details(extension.get(),
                                 UnloadedExtensionInfo::REASON_UNINSTALL);
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
       content::NotificationService::AllSources(),
       content::Details<UnloadedExtensionInfo>(&details));

   // Chuck the extension, that way if anyone tries to access it we should crash
   // or get valgrind errors.
   extension = NULL;

   WaitForImageLoad();

   // Even though we deleted the extension, we should still get the image.
   // We should still have gotten the image.
   EXPECT_EQ(1, image_loaded_count());

   // Check that the image was loaded.
   EXPECT_EQ(extension_misc::EXTENSION_ICON_SMALLISH,
             image_.ToSkBitmap()->width());
 }

 // Tests loading multiple dimensions of the same image.
 TEST_F(ImageLoaderTest, MultipleImages) {
   scoped_refptr<Extension> extension(CreateExtension(
       "image_loading_tracker", Manifest::INVALID_LOCATION));
   ASSERT_TRUE(extension.get() != NULL);

   std::vector<ImageLoader::ImageRepresentation> info_list;
   int sizes[] = {extension_misc::EXTENSION_ICON_BITTY,
                  extension_misc::EXTENSION_ICON_SMALLISH, };
   for (size_t i = 0; i < arraysize(sizes); ++i) {
     ExtensionResource resource = extensions::IconsInfo::GetIconResource(
         extension.get(), sizes[i], ExtensionIconSet::MATCH_EXACTLY);
     info_list.push_back(ImageLoader::ImageRepresentation(
         resource,
         ImageLoader::ImageRepresentation::RESIZE_WHEN_LARGER,
         gfx::Size(sizes[i], sizes[i]),
         ui::SCALE_FACTOR_NONE));
   }

   ImageLoader loader;
   loader.LoadImagesAsync(extension.get(), info_list,
                          base::Bind(&ImageLoaderTest::OnImageLoaded,
                                     base::Unretained(this)));

   // The image isn't cached, so we should not have received notification.
   EXPECT_EQ(0, image_loaded_count());

   WaitForImageLoad();

   // We should have gotten the image.
   EXPECT_EQ(1, image_loaded_count());

   // Check that all images were loaded.
   std::vector<gfx::ImageSkiaRep> image_reps =
       image_.ToImageSkia()->image_reps();
   ASSERT_EQ(2u, image_reps.size());

   const gfx::ImageSkiaRep* img_rep1 = &image_reps[0];
   const gfx::ImageSkiaRep* img_rep2 = &image_reps[1];
   EXPECT_EQ(extension_misc::EXTENSION_ICON_BITTY,
             img_rep1->pixel_width());
   EXPECT_EQ(extension_misc::EXTENSION_ICON_SMALLISH,
             img_rep2->pixel_width());
 }

 // Tests loading multiple dimensions of the same image into an image family.
 TEST_F(ImageLoaderTest, LoadImageFamily) {
   scoped_refptr<Extension> extension(
       CreateExtension("image_loading_tracker", Manifest::INVALID_LOCATION));
   ASSERT_TRUE(extension.get() != NULL);

   std::vector<ImageLoader::ImageRepresentation> info_list;
   int sizes[] = {extension_misc::EXTENSION_ICON_BITTY,
                  extension_misc::EXTENSION_ICON_SMALLISH, };
   for (size_t i = 0; i < arraysize(sizes); ++i) {
     ExtensionResource resource = extensions::IconsInfo::GetIconResource(
         extension.get(), sizes[i], ExtensionIconSet::MATCH_EXACTLY);
     info_list.push_back(ImageLoader::ImageRepresentation(
         resource,
         ImageLoader::ImageRepresentation::NEVER_RESIZE,
         gfx::Size(sizes[i], sizes[i]),
         ui::SCALE_FACTOR_100P));
   }

   // Add a second icon of 200P which should get grouped with the smaller icon's
   // ImageSkia.
   ExtensionResource resource = extensions::IconsInfo::GetIconResource(
       extension.get(),
       extension_misc::EXTENSION_ICON_SMALLISH,
       ExtensionIconSet::MATCH_EXACTLY);
   info_list.push_back(ImageLoader::ImageRepresentation(
       resource,
       ImageLoader::ImageRepresentation::NEVER_RESIZE,
       gfx::Size(extension_misc::EXTENSION_ICON_BITTY,
                 extension_misc::EXTENSION_ICON_BITTY),
       ui::SCALE_FACTOR_200P));

   ImageLoader loader;
   loader.LoadImageFamilyAsync(extension.get(),
                               info_list,
                               base::Bind(&ImageLoaderTest::OnImageFamilyLoaded,
                                          base::Unretained(this)));

   // The image isn't cached, so we should not have received notification.
   EXPECT_EQ(0, image_loaded_count());

   WaitForImageLoad();

   // We should have gotten the image.
   EXPECT_EQ(1, image_loaded_count());

   // Check that all images were loaded.
   for (size_t i = 0; i < arraysize(sizes); ++i) {
     const gfx::Image* image = image_family_.GetBest(sizes[i], sizes[i]);
     EXPECT_EQ(sizes[i], image->Width());
   }

   // Check the smaller image has 2 representations of different scale factors.
   std::vector<gfx::ImageSkiaRep> image_reps =
       image_family_.GetBest(extension_misc::EXTENSION_ICON_BITTY,
                             extension_misc::EXTENSION_ICON_BITTY)
           ->ToImageSkia()
           ->image_reps();

   ASSERT_EQ(2u, image_reps.size());

   const gfx::ImageSkiaRep* img_rep1 = &image_reps[0];
   const gfx::ImageSkiaRep* img_rep2 = &image_reps[1];
   EXPECT_EQ(extension_misc::EXTENSION_ICON_BITTY, img_rep1->pixel_width());
   EXPECT_EQ(1.0f, img_rep1->scale());
   EXPECT_EQ(extension_misc::EXTENSION_ICON_SMALLISH, img_rep2->pixel_width());
   EXPECT_EQ(2.0f, img_rep2->scale());
 }

 // Tests IsComponentExtensionResource function.
 // TODO(mukai): move this to ChromeComponentExtensionResourceManager's test.
 TEST_F(ImageLoaderTest, IsComponentExtensionResource) {
   extensions::ComponentExtensionResourceManager* resource_manager =
       extensions::ExtensionsBrowserClient::Get()->
       GetComponentExtensionResourceManager();
   if (!resource_manager)
     return;

   scoped_refptr<Extension> extension(CreateExtension(
       "file_manager", Manifest::COMPONENT));
   ASSERT_TRUE(extension.get() != NULL);

   ExtensionResource resource = extensions::IconsInfo::GetIconResource(
       extension.get(),
       extension_misc::EXTENSION_ICON_BITTY,
       ExtensionIconSet::MATCH_EXACTLY);

 #if defined(OS_CHROMEOS)
   int resource_id;
   ASSERT_TRUE(resource_manager->IsComponentExtensionResource(
       extension->path(),
       resource.relative_path(),
       &resource_id));
   ASSERT_EQ(IDR_FILE_MANAGER_ICON_16, resource_id);
 #endif
 }
	// Copyright 2014 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include "extensions/browser/image_loader.h"

	#include "base/files/file_path.h"
	#include "base/json/json_file_value_serializer.h"
	#include "base/message_loop/message_loop.h"
	#include "base/path_service.h"
	#include "base/strings/string_util.h"
	#include "chrome/browser/chrome_notification_types.h"
	#include "chrome/common/chrome_paths.h"
	#include "content/public/browser/notification_service.h"
	#include "content/public/test/test_browser_thread.h"
	#include "extensions/browser/component_extension_resource_manager.h"
	#include "extensions/browser/extensions_browser_client.h"
	#include "extensions/common/constants.h"
	#include "extensions/common/extension.h"
	#include "extensions/common/extension_icon_set.h"
	#include "extensions/common/extension_resource.h"
	#include "extensions/common/manifest.h"
	#include "extensions/common/manifest_handlers/icons_handler.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "third_party/skia/include/core/SkBitmap.h"
	#include "ui/gfx/image/image.h"
	#include "ui/gfx/image/image_family.h"
	#include "ui/gfx/image/image_skia.h"
	#include "ui/gfx/size.h"

	#if defined(OS_CHROMEOS)
	#include "ui/file_manager/grit/file_manager_resources.h"
	#endif

	using content::BrowserThread;
	using extensions::Extension;
	using extensions::ExtensionResource;
	using extensions::ImageLoader;
	using extensions::Manifest;
	using extensions::UnloadedExtensionInfo;

	class ImageLoaderTest : public testing::Test {
	public:
	ImageLoaderTest()
	: image_loaded_count_(0),
	quit_in_image_loaded_(false),
	ui_thread_(BrowserThread::UI, &ui_loop_),
	file_thread_(BrowserThread::FILE),
	io_thread_(BrowserThread::IO) {
	}

	void OnImageLoaded(const gfx::Image& image) {
	image_loaded_count_++;
	if (quit_in_image_loaded_)
	base::MessageLoop::current()->Quit();
	image_ = image;
	}

	void OnImageFamilyLoaded(const gfx::ImageFamily& image_family) {
	image_loaded_count_++;
	if (quit_in_image_loaded_)
	base::MessageLoop::current()->Quit();
	image_family_ = image_family;
	}

	void WaitForImageLoad() {
	quit_in_image_loaded_ = true;
	base::MessageLoop::current()->Run();
	quit_in_image_loaded_ = false;
	}

	int image_loaded_count() {
	int result = image_loaded_count_;
	image_loaded_count_ = 0;
	return result;
	}

	scoped_refptr<Extension> CreateExtension(const char* name,
	Manifest::Location location) {
	// Create and load an extension.
	base::FilePath test_file;
	if (!PathService::Get(chrome::DIR_TEST_DATA, &test_file)) {
	EXPECT_FALSE(true);
	return NULL;
	}
	test_file = test_file.AppendASCII("extensions")
	.AppendASCII(name);
	int error_code = 0;
	std::string error;
	JSONFileValueSerializer serializer(test_file.AppendASCII("app.json"));
	scoped_ptr<base::DictionaryValue> valid_value(
	static_cast<base::DictionaryValue*>(serializer.Deserialize(&error_code,
	&error)));
	EXPECT_EQ(0, error_code) << error;
	if (error_code != 0)
	return NULL;

	EXPECT_TRUE(valid_value.get());
	if (!valid_value)
	return NULL;

	if (location == Manifest::COMPONENT) {
	if (!PathService::Get(chrome::DIR_RESOURCES, &test_file)) {
	EXPECT_FALSE(true);
	return NULL;
	}
	test_file = test_file.AppendASCII(name);
	}
	return Extension::Create(test_file, location, *valid_value,
	Extension::NO_FLAGS, &error);
	}

	gfx::Image image_;
	gfx::ImageFamily image_family_;

	private:
	virtual void SetUp() OVERRIDE {
	testing::Test::SetUp();
	file_thread_.Start();
	io_thread_.Start();
	}

	int image_loaded_count_;
	bool quit_in_image_loaded_;
	base::MessageLoop ui_loop_;
	content::TestBrowserThread ui_thread_;
	content::TestBrowserThread file_thread_;
	content::TestBrowserThread io_thread_;
	};

	// Tests loading an image works correctly.
	TEST_F(ImageLoaderTest, LoadImage) {
	scoped_refptr<Extension> extension(CreateExtension(
	"image_loading_tracker", Manifest::INVALID_LOCATION));
	ASSERT_TRUE(extension.get() != NULL);

	ExtensionResource image_resource = extensions::IconsInfo::GetIconResource(
	extension.get(),
	extension_misc::EXTENSION_ICON_SMALLISH,
	ExtensionIconSet::MATCH_EXACTLY);
	gfx::Size max_size(extension_misc::EXTENSION_ICON_SMALLISH,
	extension_misc::EXTENSION_ICON_SMALLISH);
	ImageLoader loader;
	loader.LoadImageAsync(extension.get(),
	image_resource,
	max_size,
	base::Bind(&ImageLoaderTest::OnImageLoaded,
	base::Unretained(this)));

	// The image isn't cached, so we should not have received notification.
	EXPECT_EQ(0, image_loaded_count());

	WaitForImageLoad();

	// We should have gotten the image.
	EXPECT_EQ(1, image_loaded_count());

	// Check that the image was loaded.
	EXPECT_EQ(extension_misc::EXTENSION_ICON_SMALLISH,
	image_.ToSkBitmap()->width());
	}

	// Tests deleting an extension while waiting for the image to load doesn't cause
	// problems.
	TEST_F(ImageLoaderTest, DeleteExtensionWhileWaitingForCache) {
	scoped_refptr<Extension> extension(CreateExtension(
	"image_loading_tracker", Manifest::INVALID_LOCATION));
	ASSERT_TRUE(extension.get() != NULL);

	ExtensionResource image_resource = extensions::IconsInfo::GetIconResource(
	extension.get(),
	extension_misc::EXTENSION_ICON_SMALLISH,
	ExtensionIconSet::MATCH_EXACTLY);
	gfx::Size max_size(extension_misc::EXTENSION_ICON_SMALLISH,
	extension_misc::EXTENSION_ICON_SMALLISH);
	ImageLoader loader;
	std::set<int> sizes;
	sizes.insert(extension_misc::EXTENSION_ICON_SMALLISH);
	loader.LoadImageAsync(extension.get(),
	image_resource,
	max_size,
	base::Bind(&ImageLoaderTest::OnImageLoaded,
	base::Unretained(this)));

	// The image isn't cached, so we should not have received notification.
	EXPECT_EQ(0, image_loaded_count());

	// Send out notification the extension was uninstalled.
	UnloadedExtensionInfo details(extension.get(),
	UnloadedExtensionInfo::REASON_UNINSTALL);
	content::NotificationService::current()->Notify(
	chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
	content::NotificationService::AllSources(),
	content::Details<UnloadedExtensionInfo>(&details));

	// Chuck the extension, that way if anyone tries to access it we should crash
	// or get valgrind errors.
	extension = NULL;

	WaitForImageLoad();

	// Even though we deleted the extension, we should still get the image.
	// We should still have gotten the image.
	EXPECT_EQ(1, image_loaded_count());

	// Check that the image was loaded.
	EXPECT_EQ(extension_misc::EXTENSION_ICON_SMALLISH,
	image_.ToSkBitmap()->width());
	}

	// Tests loading multiple dimensions of the same image.
	TEST_F(ImageLoaderTest, MultipleImages) {
	scoped_refptr<Extension> extension(CreateExtension(
	"image_loading_tracker", Manifest::INVALID_LOCATION));
	ASSERT_TRUE(extension.get() != NULL);

	std::vector<ImageLoader::ImageRepresentation> info_list;
	int sizes[] = {extension_misc::EXTENSION_ICON_BITTY,
	extension_misc::EXTENSION_ICON_SMALLISH, };
	for (size_t i = 0; i < arraysize(sizes); ++i) {
	ExtensionResource resource = extensions::IconsInfo::GetIconResource(
	extension.get(), sizes[i], ExtensionIconSet::MATCH_EXACTLY);
	info_list.push_back(ImageLoader::ImageRepresentation(
	resource,
	ImageLoader::ImageRepresentation::RESIZE_WHEN_LARGER,
	gfx::Size(sizes[i], sizes[i]),
	ui::SCALE_FACTOR_NONE));
	}

	ImageLoader loader;
	loader.LoadImagesAsync(extension.get(), info_list,
	base::Bind(&ImageLoaderTest::OnImageLoaded,
	base::Unretained(this)));

	// The image isn't cached, so we should not have received notification.
	EXPECT_EQ(0, image_loaded_count());

	WaitForImageLoad();

	// We should have gotten the image.
	EXPECT_EQ(1, image_loaded_count());

	// Check that all images were loaded.
	std::vector<gfx::ImageSkiaRep> image_reps =
	image_.ToImageSkia()->image_reps();
	ASSERT_EQ(2u, image_reps.size());

	const gfx::ImageSkiaRep* img_rep1 = &image_reps[0];
	const gfx::ImageSkiaRep* img_rep2 = &image_reps[1];
	EXPECT_EQ(extension_misc::EXTENSION_ICON_BITTY,
	img_rep1->pixel_width());
	EXPECT_EQ(extension_misc::EXTENSION_ICON_SMALLISH,
	img_rep2->pixel_width());
	}

	// Tests loading multiple dimensions of the same image into an image family.
	TEST_F(ImageLoaderTest, LoadImageFamily) {
	scoped_refptr<Extension> extension(
	CreateExtension("image_loading_tracker", Manifest::INVALID_LOCATION));
	ASSERT_TRUE(extension.get() != NULL);

	std::vector<ImageLoader::ImageRepresentation> info_list;
	int sizes[] = {extension_misc::EXTENSION_ICON_BITTY,
	extension_misc::EXTENSION_ICON_SMALLISH, };
	for (size_t i = 0; i < arraysize(sizes); ++i) {
	ExtensionResource resource = extensions::IconsInfo::GetIconResource(
	extension.get(), sizes[i], ExtensionIconSet::MATCH_EXACTLY);
	info_list.push_back(ImageLoader::ImageRepresentation(
	resource,
	ImageLoader::ImageRepresentation::NEVER_RESIZE,
	gfx::Size(sizes[i], sizes[i]),
	ui::SCALE_FACTOR_100P));
	}

	// Add a second icon of 200P which should get grouped with the smaller icon's
	// ImageSkia.
	ExtensionResource resource = extensions::IconsInfo::GetIconResource(
	extension.get(),
	extension_misc::EXTENSION_ICON_SMALLISH,
	ExtensionIconSet::MATCH_EXACTLY);
	info_list.push_back(ImageLoader::ImageRepresentation(
	resource,
	ImageLoader::ImageRepresentation::NEVER_RESIZE,
	gfx::Size(extension_misc::EXTENSION_ICON_BITTY,
	extension_misc::EXTENSION_ICON_BITTY),
	ui::SCALE_FACTOR_200P));

	ImageLoader loader;
	loader.LoadImageFamilyAsync(extension.get(),
	info_list,
	base::Bind(&ImageLoaderTest::OnImageFamilyLoaded,
	base::Unretained(this)));

	// The image isn't cached, so we should not have received notification.
	EXPECT_EQ(0, image_loaded_count());

	WaitForImageLoad();

	// We should have gotten the image.
	EXPECT_EQ(1, image_loaded_count());

	// Check that all images were loaded.
	for (size_t i = 0; i < arraysize(sizes); ++i) {
	const gfx::Image* image = image_family_.GetBest(sizes[i], sizes[i]);
	EXPECT_EQ(sizes[i], image->Width());
	}

	// Check the smaller image has 2 representations of different scale factors.
	std::vector<gfx::ImageSkiaRep> image_reps =
	image_family_.GetBest(extension_misc::EXTENSION_ICON_BITTY,
	extension_misc::EXTENSION_ICON_BITTY)
	->ToImageSkia()
	->image_reps();

	ASSERT_EQ(2u, image_reps.size());

	const gfx::ImageSkiaRep* img_rep1 = &image_reps[0];
	const gfx::ImageSkiaRep* img_rep2 = &image_reps[1];
	EXPECT_EQ(extension_misc::EXTENSION_ICON_BITTY, img_rep1->pixel_width());
	EXPECT_EQ(1.0f, img_rep1->scale());
	EXPECT_EQ(extension_misc::EXTENSION_ICON_SMALLISH, img_rep2->pixel_width());
	EXPECT_EQ(2.0f, img_rep2->scale());
	}

	// Tests IsComponentExtensionResource function.
	// TODO(mukai): move this to ChromeComponentExtensionResourceManager's test.
	TEST_F(ImageLoaderTest, IsComponentExtensionResource) {
	extensions::ComponentExtensionResourceManager* resource_manager =
	extensions::ExtensionsBrowserClient::Get()->
	GetComponentExtensionResourceManager();
	if (!resource_manager)
	return;

	scoped_refptr<Extension> extension(CreateExtension(
	"file_manager", Manifest::COMPONENT));
	ASSERT_TRUE(extension.get() != NULL);

	ExtensionResource resource = extensions::IconsInfo::GetIconResource(
	extension.get(),
	extension_misc::EXTENSION_ICON_BITTY,
	ExtensionIconSet::MATCH_EXACTLY);

	#if defined(OS_CHROMEOS)
	int resource_id;
	ASSERT_TRUE(resource_manager->IsComponentExtensionResource(
	extension->path(),
	resource.relative_path(),
	&resource_id));
	ASSERT_EQ(IDR_FILE_MANAGER_ICON_16, resource_id);
	#endif
	}