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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/path_service.h"
#include "base/test/scoped_feature_list.h"
#include "base/timer/elapsed_timer.h"
#include "chrome/browser/preloading/chrome_preloading.h"
#include "chrome/browser/preloading/prefetch/chrome_prefetch_manager.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/test/base/chrome_test_utils.h"
#include "chrome/test/base/platform_browser_test.h"
#include "content/public/common/content_features.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/prefetch_test_util.h"
#include "content/public/test/preloading_test_util.h"
#include "net/dns/mock_host_resolver.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "testing/gtest/include/gtest/gtest.h"
#if BUILDFLAG(IS_ANDROID)
#include "chrome/browser/flags/android/chrome_feature_list.h"
#endif // BUILDFLAG(IS_ANDROID)
namespace {
class PrefetchBrowserTest : public PlatformBrowserTest {
public:
PrefetchBrowserTest() {
std::vector<base::test::FeatureRef> enabled_features = {
features::kPrefetchBrowserInitiatedTriggers};
#if BUILDFLAG(IS_ANDROID)
enabled_features.push_back(chrome::android::kCCTNavigationalPrefetch);
#endif // BUILDFLAG(IS_ANDROID)
feature_list_.InitWithFeatures(enabled_features, {});
}
void SetUpOnMainThread() override {
host_resolver()->AddRule("*", "127.0.0.1");
embedded_test_server()->ServeFilesFromDirectory(
base::PathService::CheckedGet(chrome::DIR_TEST_DATA));
ASSERT_TRUE(embedded_test_server()->Start());
ssl_server_.SetSSLConfig(
net::test_server::EmbeddedTestServer::CERT_TEST_NAMES);
ssl_server_.ServeFilesFromDirectory(
base::PathService::CheckedGet(chrome::DIR_TEST_DATA));
ASSERT_TRUE(ssl_server_.Start());
test_ukm_recorder_ = std::make_unique<ukm::TestAutoSetUkmRecorder>();
attempt_entry_builder_ =
std::make_unique<content::test::PreloadingAttemptUkmEntryBuilder>(
PredictorToExpectInUkm());
}
void TearDownOnMainThread() override {
ASSERT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
ASSERT_TRUE(ssl_server_.ShutdownAndWaitUntilComplete());
}
GURL GetURL(const std::string& path) {
return ssl_server_.GetURL("a.test", path);
}
content::WebContents* GetActiveWebContents() {
return chrome_test_utils::GetActiveWebContents(this);
}
bool NavigateToURL(const GURL& url) {
return content::NavigateToURL(GetActiveWebContents(), url);
}
ukm::TestAutoSetUkmRecorder* test_ukm_recorder() {
return test_ukm_recorder_.get();
}
const content::test::PreloadingAttemptUkmEntryBuilder&
attempt_entry_builder() {
return *attempt_entry_builder_;
}
protected:
// Used when creating `test_ukm_recorder_`.
content::PreloadingPredictor PredictorToExpectInUkm() {
return chrome_preloading_predictor::kChromeCustomTabs;
}
private:
base::ScopedMockElapsedTimersForTest test_timer_;
net::test_server::EmbeddedTestServer ssl_server_{
net::test_server::EmbeddedTestServer::TYPE_HTTPS};
base::test::ScopedFeatureList feature_list_;
std::unique_ptr<ukm::TestAutoSetUkmRecorder> test_ukm_recorder_;
std::unique_ptr<content::test::PreloadingAttemptUkmEntryBuilder>
attempt_entry_builder_;
};
#if BUILDFLAG(IS_ANDROID)
IN_PROC_BROWSER_TEST_F(PrefetchBrowserTest, CCTPrefetch) {
content::test::TestPrefetchWatcher test_prefetch_watcher;
const GURL initial_url = GetURL("/empty.html");
const GURL prefetch_url = GetURL("/simple.html");
ASSERT_TRUE(NavigateToURL(initial_url));
auto* chrome_prefetch_manager =
ChromePrefetchManager::GetOrCreateForWebContents(GetActiveWebContents());
chrome_prefetch_manager->StartPrefetchFromCCT(prefetch_url, false,
std::nullopt);
content::test::PrefetchContainerIdForTesting prefetch_container_id =
test_prefetch_watcher.WaitUntilPrefetchResponseCompleted(std::nullopt,
prefetch_url);
ASSERT_TRUE(NavigateToURL(prefetch_url));
EXPECT_TRUE(test_prefetch_watcher.PrefetchUsedInLastNavigation());
EXPECT_EQ(
test_prefetch_watcher.GetPrefetchContainerIdForTestingInLastNavigation(),
prefetch_container_id);
auto cct_attempt_entry_builder =
std::make_unique<content::test::PreloadingAttemptUkmEntryBuilder>(
chrome_preloading_predictor::kChromeCustomTabs);
ukm::SourceId ukm_source_id =
GetActiveWebContents()->GetPrimaryMainFrame()->GetPageUkmSourceId();
content::test::ExpectPreloadingAttemptUkm(
*test_ukm_recorder(),
{cct_attempt_entry_builder->BuildEntry(
ukm_source_id, content::PreloadingType::kPrefetch,
content::PreloadingEligibility::kEligible,
content::PreloadingHoldbackStatus::kAllowed,
content::PreloadingTriggeringOutcome::kSuccess,
content::PreloadingFailureReason::kUnspecified,
/*accurate=*/true,
/*ready_time=*/
base::ScopedMockElapsedTimersForTest::kMockElapsedTime)});
}
class CCTPrerenderBrowserTestWithHoldback : public PrefetchBrowserTest {
public:
CCTPrerenderBrowserTestWithHoldback() {
feature_list_.InitAndEnableFeatureWithParameters(
chrome::android::kCCTNavigationalPrefetch, {{"holdback", "true"}});
}
private:
base::test::ScopedFeatureList feature_list_;
};
IN_PROC_BROWSER_TEST_F(CCTPrerenderBrowserTestWithHoldback,
CCTPrefetchHoldback) {
const GURL initial_url = GetURL("/empty.html");
const GURL prefetch_url = GetURL("/simple.html");
ASSERT_TRUE(NavigateToURL(initial_url));
auto* chrome_prefetch_manager =
ChromePrefetchManager::GetOrCreateForWebContents(GetActiveWebContents());
chrome_prefetch_manager->StartPrefetchFromCCT(prefetch_url, false,
std::nullopt);
ASSERT_TRUE(NavigateToURL(prefetch_url));
auto cct_attempt_entry_builder =
std::make_unique<content::test::PreloadingAttemptUkmEntryBuilder>(
chrome_preloading_predictor::kChromeCustomTabs);
ukm::SourceId ukm_source_id =
GetActiveWebContents()->GetPrimaryMainFrame()->GetPageUkmSourceId();
content::test::ExpectPreloadingAttemptUkm(
*test_ukm_recorder(),
{cct_attempt_entry_builder->BuildEntry(
ukm_source_id, content::PreloadingType::kPrefetch,
content::PreloadingEligibility::kEligible,
content::PreloadingHoldbackStatus::kHoldback,
content::PreloadingTriggeringOutcome::kUnspecified,
content::PreloadingFailureReason::kUnspecified,
/*accurate=*/true,
/*ready_time=*/std::nullopt)});
}
#endif // BUILDFLAG(IS_ANDROID)
} // namespace
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