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// 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 "chrome/browser/bitmap_fetcher/bitmap_fetcher_service.h"
#include "chrome/browser/bitmap_fetcher/bitmap_fetcher.h"
#include "chrome/test/base/testing_profile.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
class TestNotificationInterface {
public:
virtual ~TestNotificationInterface() {}
virtual void OnImageChanged() = 0;
virtual void OnRequestFinished() = 0;
};
class TestObserver : public BitmapFetcherService::Observer {
public:
explicit TestObserver(TestNotificationInterface* target) : target_(target) {}
~TestObserver() override { target_->OnRequestFinished(); }
void OnImageChanged(BitmapFetcherService::RequestId request_id,
const SkBitmap& answers_image) override {
target_->OnImageChanged();
}
TestNotificationInterface* target_;
};
class TestService : public BitmapFetcherService {
public:
explicit TestService(content::BrowserContext* context)
: BitmapFetcherService(context) {}
~TestService() override {}
// Create a fetcher, but don't start downloading. That allows side-stepping
// the decode step, which requires a utility process.
chrome::BitmapFetcher* CreateFetcher(const GURL& url) override {
return new chrome::BitmapFetcher(url, this);
}
};
} // namespace
class BitmapFetcherServiceTest : public testing::Test,
public TestNotificationInterface {
public:
void SetUp() override {
service_.reset(new TestService(&profile_));
requestsFinished_ = 0;
imagesChanged_ = 0;
url1_ = GURL("http://example.org/sample-image-1.png");
url2_ = GURL("http://example.org/sample-image-2.png");
}
const ScopedVector<BitmapFetcherRequest>& requests() {
return service_->requests_;
}
const ScopedVector<chrome::BitmapFetcher>& active_fetchers() {
return service_->active_fetchers_;
}
size_t cache_size() { return service_->cache_.size(); }
void OnImageChanged() override { imagesChanged_++; }
void OnRequestFinished() override { requestsFinished_++; }
// Simulate finishing a URL fetch and decode for the given fetcher.
void CompleteFetch(const GURL& url) {
const chrome::BitmapFetcher* fetcher = service_->FindFetcherForUrl(url);
ASSERT_TRUE(NULL != fetcher);
// Create a non-empty bitmap.
SkBitmap image;
image.allocN32Pixels(2, 2);
image.eraseColor(SK_ColorGREEN);
const_cast<chrome::BitmapFetcher*>(fetcher)->OnImageDecoded(NULL, image);
}
void FailFetch(const GURL& url) {
const chrome::BitmapFetcher* fetcher = service_->FindFetcherForUrl(url);
ASSERT_TRUE(NULL != fetcher);
const_cast<chrome::BitmapFetcher*>(fetcher)
->OnImageDecoded(NULL, SkBitmap());
}
protected:
scoped_ptr<BitmapFetcherService> service_;
int imagesChanged_;
int requestsFinished_;
GURL url1_;
GURL url2_;
private:
TestingProfile profile_;
};
TEST_F(BitmapFetcherServiceTest, RequestInvalidUrl) {
const BitmapFetcherService::RequestId invalid_request_id =
BitmapFetcherService::REQUEST_ID_INVALID;
GURL invalid_url;
ASSERT_FALSE(invalid_url.is_valid());
BitmapFetcherService::RequestId request_id =
service_->RequestImage(invalid_url, new TestObserver(this));
EXPECT_EQ(invalid_request_id, request_id);
}
TEST_F(BitmapFetcherServiceTest, CancelInvalidRequest) {
service_->CancelRequest(BitmapFetcherService::REQUEST_ID_INVALID);
service_->CancelRequest(23);
}
TEST_F(BitmapFetcherServiceTest, OnlyFirstRequestCreatesFetcher) {
EXPECT_EQ(0U, active_fetchers().size());
service_->RequestImage(url1_, new TestObserver(this));
EXPECT_EQ(1U, active_fetchers().size());
service_->RequestImage(url1_, new TestObserver(this));
EXPECT_EQ(1U, active_fetchers().size());
}
TEST_F(BitmapFetcherServiceTest, CompletedFetchNotifiesAllObservers) {
service_->RequestImage(url1_, new TestObserver(this));
service_->RequestImage(url1_, new TestObserver(this));
service_->RequestImage(url1_, new TestObserver(this));
service_->RequestImage(url1_, new TestObserver(this));
EXPECT_EQ(1U, active_fetchers().size());
EXPECT_EQ(4U, requests().size());
CompleteFetch(url1_);
EXPECT_EQ(4, imagesChanged_);
EXPECT_EQ(4, requestsFinished_);
}
TEST_F(BitmapFetcherServiceTest, CancelRequest) {
service_->RequestImage(url1_, new TestObserver(this));
service_->RequestImage(url1_, new TestObserver(this));
BitmapFetcherService::RequestId requestId =
service_->RequestImage(url2_, new TestObserver(this));
service_->RequestImage(url1_, new TestObserver(this));
service_->RequestImage(url1_, new TestObserver(this));
EXPECT_EQ(5U, requests().size());
service_->CancelRequest(requestId);
EXPECT_EQ(4U, requests().size());
CompleteFetch(url2_);
EXPECT_EQ(0, imagesChanged_);
CompleteFetch(url1_);
EXPECT_EQ(4, imagesChanged_);
}
TEST_F(BitmapFetcherServiceTest, FailedRequestsDontEnterCache) {
service_->RequestImage(url1_, new TestObserver(this));
service_->RequestImage(url2_, new TestObserver(this));
EXPECT_EQ(0U, cache_size());
CompleteFetch(url1_);
EXPECT_EQ(1U, cache_size());
FailFetch(url2_);
EXPECT_EQ(1U, cache_size());
}
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