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content / browser / loader / navigation_early_hints_manager_unittest.cc [blame]
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/loader/navigation_early_hints_manager.h"
#include <memory>
#include "base/memory/scoped_refptr.h"
#include "base/run_loop.h"
#include "base/test/bind.h"
#include "content/browser/renderer_host/frame_tree_node.h"
#include "content/public/test/browser_task_environment.h"
#include "content/public/test/test_browser_context.h"
#include "content/public/test/test_storage_partition.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "net/http/http_request_headers.h"
#include "services/network/public/cpp/constants.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
#include "services/network/public/mojom/early_hints.mojom.h"
#include "services/network/public/mojom/link_header.mojom.h"
#include "services/network/public/mojom/parsed_headers.mojom.h"
#include "services/network/test/test_network_context.h"
#include "services/network/test/test_url_loader_factory.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
using PreloadedResources = NavigationEarlyHintsManager::PreloadedResources;
namespace {
const char kNavigationPath[] = "https://a.test/";
const char kPreloadPath[] = "https://a.test/script.js";
const std::string kPreloadBody = "/*empty*/";
struct PreconnectRequest {
PreconnectRequest(
const GURL& url,
bool allow_credentials,
const net::NetworkAnonymizationKey& network_anonymization_key)
: url(url),
allow_credentials(allow_credentials),
network_anonymization_key(network_anonymization_key) {}
GURL const url;
bool const allow_credentials;
net::NetworkAnonymizationKey const network_anonymization_key;
};
class FakeNetworkContext : public network::TestNetworkContext {
public:
FakeNetworkContext() = default;
~FakeNetworkContext() override = default;
void PreconnectSockets(
uint32_t num_streams,
const GURL& url,
network::mojom::CredentialsMode credentials_mode,
const net::NetworkAnonymizationKey& network_anonymization_key) override {
preconnect_requests_.emplace_back(
url,
credentials_mode == network::mojom::CredentialsMode::kInclude ? true
: false,
network_anonymization_key);
}
std::vector<PreconnectRequest>& preconnect_requests() {
return preconnect_requests_;
}
private:
std::vector<PreconnectRequest> preconnect_requests_;
};
} // namespace
class NavigationEarlyHintsManagerTest : public testing::Test {
public:
NavigationEarlyHintsManagerTest()
: task_environment_(base::test::TaskEnvironment::MainThreadType::IO) {
url::Origin origin = url::Origin::Create(GURL(kNavigationPath));
auto isolation_info = net::IsolationInfo::CreateForInternalRequest(origin);
network_anonymization_key_ = isolation_info.network_anonymization_key();
mojo::Remote<network::mojom::URLLoaderFactory> remote;
loader_factory_.Clone(remote.BindNewPipeAndPassReceiver());
early_hints_manager_ = std::make_unique<NavigationEarlyHintsManager>(
browser_context_, storage_partition_, FrameTreeNodeId(),
NavigationEarlyHintsManagerParams(origin, std::move(isolation_info),
std::move(remote)));
}
~NavigationEarlyHintsManagerTest() override = default;
void SetUp() override {
fake_network_context_ = std::make_unique<FakeNetworkContext>();
early_hints_manager().SetNetworkContextForTesting(
fake_network_context_.get());
}
protected:
network::TestURLLoaderFactory& loader_factory() { return loader_factory_; }
NavigationEarlyHintsManager& early_hints_manager() {
return *early_hints_manager_;
}
FakeNetworkContext& fake_network_context() { return *fake_network_context_; }
net::NetworkAnonymizationKey& network_anonymization_key() {
return network_anonymization_key_;
}
network::mojom::URLResponseHeadPtr CreatePreloadResponseHead() {
auto head = network::mojom::URLResponseHead::New();
head->headers =
base::MakeRefCounted<net::HttpResponseHeaders>("HTTP/1.1 200 OK");
head->headers->AddHeader("content-type", "application/javascript");
return head;
}
network::mojom::EarlyHintsPtr CreateEarlyHintWithPreload() {
auto link_header = network::mojom::LinkHeader::New(
GURL(kPreloadPath), network::mojom::LinkRelAttribute::kPreload,
network::mojom::LinkAsAttribute::kScript,
network::mojom::CrossOriginAttribute::kUnspecified,
network::mojom::FetchPriorityAttribute::kAuto,
/*mime_type=*/std::nullopt);
auto hints = network::mojom::EarlyHints::New();
hints->headers = network::mojom::ParsedHeaders::New();
hints->headers->link_headers.push_back(std::move(link_header));
return hints;
}
network::ResourceRequest CreateNavigationResourceRequest() {
network::ResourceRequest request;
request.is_outermost_main_frame = true;
request.url = GURL(kNavigationPath);
return request;
}
PreloadedResources WaitForPreloadedResources() {
base::RunLoop loop;
PreloadedResources result;
early_hints_manager().WaitForPreloadsFinishedForTesting(
base::BindLambdaForTesting([&](PreloadedResources preloaded_resources) {
result = preloaded_resources;
loop.Quit();
}));
loop.Run();
return result;
}
network::mojom::LinkHeaderPtr CreateLinkHeader(
network::mojom::LinkAsAttribute as,
network::mojom::FetchPriorityAttribute fetch_priority) {
return network::mojom::LinkHeader::New(
GURL(kPreloadPath), network::mojom::LinkRelAttribute::kPreload, as,
network::mojom::CrossOriginAttribute::kUnspecified, fetch_priority,
/*mime_type=*/std::nullopt);
}
private:
BrowserTaskEnvironment task_environment_;
TestBrowserContext browser_context_;
TestStoragePartition storage_partition_;
network::TestURLLoaderFactory loader_factory_;
std::unique_ptr<NavigationEarlyHintsManager> early_hints_manager_;
std::unique_ptr<FakeNetworkContext> fake_network_context_;
net::NetworkAnonymizationKey network_anonymization_key_;
};
TEST_F(NavigationEarlyHintsManagerTest, SimpleResponse) {
// Set up a response which simulates coming from network.
network::mojom::URLResponseHeadPtr head = CreatePreloadResponseHead();
network::URLLoaderCompletionStatus status;
status.decoded_body_length = kPreloadBody.size();
status.error_code = net::OK;
loader_factory().AddResponse(GURL(kPreloadPath), std::move(head),
kPreloadBody, status);
loader_factory().SetInterceptor(base::BindLambdaForTesting(
[&](const network::ResourceRequest& resource_request) {
EXPECT_THAT(
resource_request.headers.GetHeader(
net::HttpRequestHeaders::kAccept),
testing::Optional(std::string(network::kDefaultAcceptHeaderValue)));
}));
early_hints_manager().HandleEarlyHints(CreateEarlyHintWithPreload(),
CreateNavigationResourceRequest());
PreloadedResources preloads = WaitForPreloadedResources();
ASSERT_EQ(preloads.size(), 1UL);
auto it = preloads.find(GURL(kPreloadPath));
ASSERT_TRUE(it != preloads.end());
ASSERT_TRUE(it->second.error_code.has_value());
EXPECT_EQ(it->second.error_code.value(), net::OK);
EXPECT_FALSE(it->second.was_canceled);
}
TEST_F(NavigationEarlyHintsManagerTest, EmptyBody) {
// Set up an empty response which simulates coming from network.
network::mojom::URLResponseHeadPtr head = CreatePreloadResponseHead();
network::URLLoaderCompletionStatus status;
status.decoded_body_length = 0;
status.error_code = net::OK;
loader_factory().AddResponse(GURL(kPreloadPath), std::move(head), "", status);
early_hints_manager().HandleEarlyHints(CreateEarlyHintWithPreload(),
CreateNavigationResourceRequest());
PreloadedResources preloads = WaitForPreloadedResources();
ASSERT_EQ(preloads.size(), 1UL);
auto it = preloads.find(GURL(kPreloadPath));
ASSERT_TRUE(it != preloads.end());
ASSERT_TRUE(it->second.error_code.has_value());
EXPECT_EQ(it->second.error_code.value(), net::OK);
EXPECT_FALSE(it->second.was_canceled);
}
TEST_F(NavigationEarlyHintsManagerTest, ResponseExistsInDiskCache) {
// Set up a response which simulates coming from disk cache.
network::mojom::URLResponseHeadPtr head = CreatePreloadResponseHead();
head->was_fetched_via_cache = true;
network::URLLoaderCompletionStatus status;
status.decoded_body_length = kPreloadBody.size();
status.error_code = net::OK;
loader_factory().AddResponse(GURL(kPreloadPath), std::move(head),
kPreloadBody, status);
early_hints_manager().HandleEarlyHints(CreateEarlyHintWithPreload(),
CreateNavigationResourceRequest());
PreloadedResources preloads = WaitForPreloadedResources();
ASSERT_EQ(preloads.size(), 1UL);
auto it = preloads.find(GURL(kPreloadPath));
ASSERT_TRUE(it != preloads.end());
EXPECT_TRUE(it->second.was_canceled);
}
TEST_F(NavigationEarlyHintsManagerTest, PreloadSchemeIsUnsupported) {
auto link_header = network::mojom::LinkHeader::New(
GURL("file:///"), network::mojom::LinkRelAttribute::kPreload,
network::mojom::LinkAsAttribute::kUnspecified,
network::mojom::CrossOriginAttribute::kUnspecified,
network::mojom::FetchPriorityAttribute::kAuto,
/*mime_type=*/std::nullopt);
auto hints = network::mojom::EarlyHints::New();
hints->headers = network::mojom::ParsedHeaders::New();
hints->headers->link_headers.push_back(std::move(link_header));
early_hints_manager().HandleEarlyHints(std::move(hints),
CreateNavigationResourceRequest());
EXPECT_TRUE(early_hints_manager().WasResourceHintsReceived());
EXPECT_FALSE(early_hints_manager().HasInflightPreloads());
}
TEST_F(NavigationEarlyHintsManagerTest, SinglePreconnect) {
auto preconnect_url = GURL("https://b.test");
auto link_header = network::mojom::LinkHeader::New(
preconnect_url, network::mojom::LinkRelAttribute::kPreconnect,
network::mojom::LinkAsAttribute::kUnspecified,
network::mojom::CrossOriginAttribute::kUnspecified,
network::mojom::FetchPriorityAttribute::kAuto,
/*mime_type=*/std::nullopt);
auto hints = network::mojom::EarlyHints::New();
hints->headers = network::mojom::ParsedHeaders::New();
hints->headers->link_headers.push_back(std::move(link_header));
early_hints_manager().HandleEarlyHints(std::move(hints),
CreateNavigationResourceRequest());
std::vector<PreconnectRequest>& requests =
fake_network_context().preconnect_requests();
ASSERT_EQ(requests.size(), 1UL);
EXPECT_EQ(requests[0].url, preconnect_url);
EXPECT_TRUE(requests[0].allow_credentials);
EXPECT_EQ(requests[0].network_anonymization_key, network_anonymization_key());
}
TEST_F(NavigationEarlyHintsManagerTest, MultiplePreconnects) {
auto preconnect_url1 = GURL("https://b.test");
auto preconnect_url2 = GURL("https://c.test");
auto hints = network::mojom::EarlyHints::New();
hints->headers = network::mojom::ParsedHeaders::New();
// Add four preconnect Link headers. The first three Links have the same
// origin. The third and fourth Links specify crossorigin attribute. The
// second Link should be skipped since it is a duplication of the first one.
hints->headers->link_headers.push_back(network::mojom::LinkHeader::New(
preconnect_url1, network::mojom::LinkRelAttribute::kPreconnect,
network::mojom::LinkAsAttribute::kUnspecified,
network::mojom::CrossOriginAttribute::kUnspecified,
network::mojom::FetchPriorityAttribute::kAuto,
/*mime_type=*/std::nullopt));
hints->headers->link_headers.push_back(network::mojom::LinkHeader::New(
preconnect_url1, network::mojom::LinkRelAttribute::kPreconnect,
network::mojom::LinkAsAttribute::kUnspecified,
network::mojom::CrossOriginAttribute::kUnspecified,
network::mojom::FetchPriorityAttribute::kAuto,
/*mime_type=*/std::nullopt));
hints->headers->link_headers.push_back(network::mojom::LinkHeader::New(
preconnect_url1, network::mojom::LinkRelAttribute::kPreconnect,
network::mojom::LinkAsAttribute::kUnspecified,
network::mojom::CrossOriginAttribute::kAnonymous,
network::mojom::FetchPriorityAttribute::kAuto,
/*mime_type=*/std::nullopt));
hints->headers->link_headers.push_back(network::mojom::LinkHeader::New(
preconnect_url2, network::mojom::LinkRelAttribute::kPreconnect,
network::mojom::LinkAsAttribute::kUnspecified,
network::mojom::CrossOriginAttribute::kAnonymous,
network::mojom::FetchPriorityAttribute::kAuto,
/*mime_type=*/std::nullopt));
early_hints_manager().HandleEarlyHints(std::move(hints),
CreateNavigationResourceRequest());
std::vector<PreconnectRequest>& requests =
fake_network_context().preconnect_requests();
ASSERT_EQ(requests.size(), 3UL);
EXPECT_EQ(requests[0].url, preconnect_url1);
EXPECT_TRUE(requests[0].allow_credentials);
EXPECT_EQ(requests[0].network_anonymization_key, network_anonymization_key());
EXPECT_EQ(requests[1].url, preconnect_url1);
EXPECT_FALSE(requests[1].allow_credentials);
EXPECT_EQ(requests[1].network_anonymization_key, network_anonymization_key());
EXPECT_EQ(requests[2].url, preconnect_url2);
EXPECT_FALSE(requests[2].allow_credentials);
EXPECT_EQ(requests[2].network_anonymization_key, network_anonymization_key());
}
TEST_F(NavigationEarlyHintsManagerTest, InvalidPreconnectLink) {
auto preconnect_url = GURL("file:///");
auto link_header = network::mojom::LinkHeader::New(
preconnect_url, network::mojom::LinkRelAttribute::kPreconnect,
network::mojom::LinkAsAttribute::kUnspecified,
network::mojom::CrossOriginAttribute::kUnspecified,
network::mojom::FetchPriorityAttribute::kAuto,
/*mime_type=*/std::nullopt);
auto hints = network::mojom::EarlyHints::New();
hints->headers = network::mojom::ParsedHeaders::New();
hints->headers->link_headers.push_back(std::move(link_header));
early_hints_manager().HandleEarlyHints(std::move(hints),
CreateNavigationResourceRequest());
std::vector<PreconnectRequest>& requests =
fake_network_context().preconnect_requests();
EXPECT_TRUE(requests.empty());
}
TEST_F(NavigationEarlyHintsManagerTest, PreloadPriority) {
// Auto priority based on content type
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(CreateLinkHeader(
network::mojom::LinkAsAttribute::kStyleSheet,
network::mojom::FetchPriorityAttribute::kAuto)),
net::HIGHEST);
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(CreateLinkHeader(
network::mojom::LinkAsAttribute::kFont,
network::mojom::FetchPriorityAttribute::kAuto)),
net::MEDIUM);
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(CreateLinkHeader(
network::mojom::LinkAsAttribute::kScript,
network::mojom::FetchPriorityAttribute::kAuto)),
net::MEDIUM);
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(CreateLinkHeader(
network::mojom::LinkAsAttribute::kImage,
network::mojom::FetchPriorityAttribute::kAuto)),
net::LOWEST);
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(CreateLinkHeader(
network::mojom::LinkAsAttribute::kFetch,
network::mojom::FetchPriorityAttribute::kAuto)),
net::LOWEST);
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(CreateLinkHeader(
network::mojom::LinkAsAttribute::kUnspecified,
network::mojom::FetchPriorityAttribute::kAuto)),
net::IDLE);
// Explicit priority from fetchpriority link attribute
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(CreateLinkHeader(
network::mojom::LinkAsAttribute::kImage,
network::mojom::FetchPriorityAttribute::kHigh)),
net::MEDIUM);
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(
CreateLinkHeader(network::mojom::LinkAsAttribute::kStyleSheet,
network::mojom::FetchPriorityAttribute::kLow)),
net::LOWEST);
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(CreateLinkHeader(
network::mojom::LinkAsAttribute::kStyleSheet,
network::mojom::FetchPriorityAttribute::kHigh)),
net::HIGHEST);
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(CreateLinkHeader(
network::mojom::LinkAsAttribute::kFont,
network::mojom::FetchPriorityAttribute::kHigh)),
net::MEDIUM);
EXPECT_EQ(early_hints_manager().CalculateRequestPriority(
CreateLinkHeader(network::mojom::LinkAsAttribute::kFont,
network::mojom::FetchPriorityAttribute::kLow)),
net::LOWEST);
}
} // namespace content