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// Copyright (c) 2010 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 "base/message_loop.h"
#include "base/path_service.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/browser/extensions/image_loading_tracker.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_resource.h"
#include "chrome/common/json_value_serializer.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/notification_type.h"
#include "gfx/size.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
class ImageLoadingTrackerTest : public testing::Test,
public ImageLoadingTracker::Observer {
public:
ImageLoadingTrackerTest()
: image_loaded_count_(0),
quit_in_image_loaded_(false),
ui_thread_(ChromeThread::UI, &ui_loop_),
file_thread_(ChromeThread::FILE),
io_thread_(ChromeThread::IO) {
}
virtual void OnImageLoaded(SkBitmap* image, ExtensionResource resource,
int index) {
image_loaded_count_++;
if (quit_in_image_loaded_)
MessageLoop::current()->Quit();
if (image)
image_ = *image;
else
image_.reset();
}
void WaitForImageLoad() {
quit_in_image_loaded_ = true;
MessageLoop::current()->Run();
quit_in_image_loaded_ = false;
}
int image_loaded_count() {
int result = image_loaded_count_;
image_loaded_count_ = 0;
return result;
}
Extension* CreateExtension() {
// Create and load an extension.
FilePath test_file;
if (!PathService::Get(chrome::DIR_TEST_DATA, &test_file)) {
EXPECT_FALSE(true);
return NULL;
}
test_file = test_file.AppendASCII("extensions")
.AppendASCII("image_loading_tracker");
int error_code = 0;
std::string error;
JSONFileValueSerializer serializer(test_file.AppendASCII("app.json"));
scoped_ptr<DictionaryValue> valid_value(
static_cast<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.get())
return NULL;
scoped_ptr<Extension> extension(new Extension(test_file));
if (!extension->InitFromValue(*valid_value, false, &error))
return NULL;
return extension.release();
}
SkBitmap image_;
private:
virtual void SetUp() {
file_thread_.Start();
io_thread_.Start();
}
int image_loaded_count_;
bool quit_in_image_loaded_;
MessageLoop ui_loop_;
ChromeThread ui_thread_;
ChromeThread file_thread_;
ChromeThread io_thread_;
};
// Tests asking ImageLoadingTracker to cache pushes the result to the Extension.
TEST_F(ImageLoadingTrackerTest, Cache) {
scoped_ptr<Extension> extension(CreateExtension());
ASSERT_TRUE(extension.get() != NULL);
ExtensionResource image_resource =
extension->GetIconPath(Extension::EXTENSION_ICON_SMALLISH);
gfx::Size max_size(Extension::EXTENSION_ICON_SMALLISH,
Extension::EXTENSION_ICON_SMALLISH);
ImageLoadingTracker loader(static_cast<ImageLoadingTracker::Observer*>(this));
loader.LoadImage(extension.get(),
image_resource,
max_size,
ImageLoadingTracker::CACHE);
// 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::EXTENSION_ICON_SMALLISH, image_.width());
// The image should be cached in the Extension.
EXPECT_TRUE(extension->HasCachedImage(image_resource, max_size));
// Make sure the image is in the extension.
EXPECT_EQ(Extension::EXTENSION_ICON_SMALLISH,
extension->GetCachedImage(image_resource, max_size).width());
// Ask the tracker for the image again, this should call us back immediately.
loader.LoadImage(extension.get(),
image_resource,
max_size,
ImageLoadingTracker::CACHE);
// We should have gotten the image.
EXPECT_EQ(1, image_loaded_count());
// Check that the image was loaded.
EXPECT_EQ(Extension::EXTENSION_ICON_SMALLISH, image_.width());
}
// Tests deleting an extension while waiting for the image to load doesn't cause
// problems.
TEST_F(ImageLoadingTrackerTest, DeleteExtensionWhileWaitingForCache) {
scoped_ptr<Extension> extension(CreateExtension());
ASSERT_TRUE(extension.get() != NULL);
ExtensionResource image_resource =
extension->GetIconPath(Extension::EXTENSION_ICON_SMALLISH);
ImageLoadingTracker loader(static_cast<ImageLoadingTracker::Observer*>(this));
loader.LoadImage(extension.get(),
image_resource,
gfx::Size(Extension::EXTENSION_ICON_SMALLISH,
Extension::EXTENSION_ICON_SMALLISH),
ImageLoadingTracker::CACHE);
// 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.
NotificationService::current()->Notify(
NotificationType::EXTENSION_UNLOADED,
NotificationService::AllSources(),
Details<Extension>(extension.get()));
// Chuck the extension, that way if anyone tries to access it we should crash
// or get valgrind errors.
extension.reset();
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::EXTENSION_ICON_SMALLISH, image_.width());
}
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