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// Copyright 2014 The Chromium Authors
// 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 <stddef.h>
#include "chrome/browser/bitmap_fetcher/bitmap_fetcher.h"
#include "chrome/test/base/testing_profile.h"
#include "content/public/test/browser_task_environment.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
namespace {
class TestService : public BitmapFetcherService {
public:
explicit TestService(content::BrowserContext* context)
: BitmapFetcherService(context) {}
~TestService() override = default;
// Create a fetcher, but don't start downloading. That allows side-stepping
// the decode step, which requires a utility process.
std::unique_ptr<BitmapFetcher> CreateFetcher(
const GURL& url,
const net::NetworkTrafficAnnotationTag& traffic_annotation) override {
return std::make_unique<BitmapFetcher>(url, this, traffic_annotation);
}
};
} // namespace
class BitmapFetcherServiceTest : public testing::Test {
public:
BitmapFetcherServiceTest()
: url1_(GURL("http://example.org/sample-image-1.png")),
url2_(GURL("http://example.org/sample-image-2.png")) {
}
void SetUp() override {
service_ = std::make_unique<TestService>(&profile_);
images_changed_count_ = 0;
}
const std::vector<std::unique_ptr<BitmapFetcherRequest>>& requests() const {
return service_->requests_;
}
const std::vector<std::unique_ptr<BitmapFetcher>>& active_fetchers() const {
return service_->active_fetchers_;
}
size_t cache_size() const { return service_->cache_.size(); }
void OnBitmapFetched(const SkBitmap& bitmap) { images_changed_count_++; }
BitmapFetcherService::RequestId RequestImage(const GURL& url) {
return service_->RequestImageForTesting(
url,
base::BindOnce(&BitmapFetcherServiceTest::OnBitmapFetched,
base::Unretained(this)),
TRAFFIC_ANNOTATION_FOR_TESTS);
}
// Simulate finishing a URL fetch and decode for the given fetcher.
void CompleteFetch(const GURL& url) {
BitmapFetcher* fetcher =
const_cast<BitmapFetcher*>(service_->FindFetcherForUrl(url));
ASSERT_TRUE(fetcher);
// Create a non-empty bitmap.
SkBitmap image;
image.allocN32Pixels(2, 2);
image.eraseColor(SK_ColorGREEN);
fetcher->OnImageDecoded(image);
}
void FailFetch(const GURL& url) {
BitmapFetcher* fetcher =
const_cast<BitmapFetcher*>(service_->FindFetcherForUrl(url));
ASSERT_TRUE(fetcher);
fetcher->OnImageDecoded(SkBitmap());
}
// A failed decode results in a nullptr image.
void FailDecode(const GURL& url) {
const BitmapFetcher* fetcher = service_->FindFetcherForUrl(url);
ASSERT_TRUE(fetcher);
const_cast<BitmapFetcher*>(fetcher)->OnDecodeImageFailed();
}
BitmapFetcherService* service() { return service_.get(); }
int images_changed_count() const { return images_changed_count_; }
const GURL url1_;
const GURL url2_;
private:
// |task_environment_| must outlive |service_|.
content::BrowserTaskEnvironment task_environment_;
TestingProfile profile_;
std::unique_ptr<BitmapFetcherService> service_;
int images_changed_count_;
};
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 = RequestImage(invalid_url);
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());
RequestImage(url1_);
EXPECT_EQ(1U, active_fetchers().size());
RequestImage(url1_);
EXPECT_EQ(1U, active_fetchers().size());
}
TEST_F(BitmapFetcherServiceTest, CompletedFetchNotifiesAllObservers) {
RequestImage(url1_);
RequestImage(url1_);
RequestImage(url1_);
RequestImage(url1_);
EXPECT_EQ(1U, active_fetchers().size());
EXPECT_EQ(4U, requests().size());
CompleteFetch(url1_);
EXPECT_EQ(4, images_changed_count());
}
TEST_F(BitmapFetcherServiceTest, CancelRequest) {
RequestImage(url1_);
RequestImage(url1_);
BitmapFetcherService::RequestId requestId = RequestImage(url2_);
RequestImage(url1_);
RequestImage(url1_);
service()->CancelRequest(requestId);
EXPECT_EQ(4U, requests().size());
CompleteFetch(url2_);
EXPECT_EQ(0, images_changed_count());
CompleteFetch(url1_);
EXPECT_EQ(4, images_changed_count());
}
TEST_F(BitmapFetcherServiceTest, FailedNullRequestsAreHandled) {
RequestImage(url1_);
RequestImage(url2_);
CompleteFetch(url1_);
EXPECT_EQ(1U, cache_size());
FailDecode(url2_);
EXPECT_EQ(1U, cache_size());
}
TEST_F(BitmapFetcherServiceTest, FailedRequestsDontEnterCache) {
RequestImage(url1_);
RequestImage(url2_);
EXPECT_EQ(0U, cache_size());
CompleteFetch(url1_);
EXPECT_EQ(1U, cache_size());
FailFetch(url2_);
EXPECT_EQ(1U, cache_size());
}
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