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// Copyright 2022 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/preloading/prefetcher.h"
#include <vector>
#include "base/test/scoped_feature_list.h"
#include "content/browser/preloading/prefetch/prefetch_document_manager.h"
#include "content/browser/preloading/prefetch/prefetch_features.h"
#include "content/browser/preloading/prefetch/prefetch_test_util_internal.h"
#include "content/public/browser/speculation_host_delegate.h"
#include "content/public/common/content_client.h"
#include "content/public/test/test_browser_context.h"
#include "content/public/test/test_renderer_host.h"
#include "content/test/test_content_browser_client.h"
#include "content/test/test_web_contents.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
namespace {
class MockSpeculationHostDelegate : public SpeculationHostDelegate {
public:
explicit MockSpeculationHostDelegate(RenderFrameHost& render_frame_host) {}
~MockSpeculationHostDelegate() override = default;
void ProcessCandidates(
std::vector<blink::mojom::SpeculationCandidatePtr>& candidates) override {
for (auto&& candidate : candidates) {
candidates_.push_back(std::move(candidate));
}
}
std::vector<blink::mojom::SpeculationCandidatePtr>& Candidates() {
return candidates_;
}
base::WeakPtr<MockSpeculationHostDelegate> AsWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
private:
std::vector<blink::mojom::SpeculationCandidatePtr> candidates_;
base::WeakPtrFactory<MockSpeculationHostDelegate> weak_ptr_factory_{this};
};
class MockContentBrowserClient : public TestContentBrowserClient {
public:
MockContentBrowserClient() {
old_browser_client_ = SetBrowserClientForTesting(this);
}
~MockContentBrowserClient() override {
EXPECT_EQ(this, SetBrowserClientForTesting(old_browser_client_));
}
std::unique_ptr<SpeculationHostDelegate> CreateSpeculationHostDelegate(
RenderFrameHost& render_frame_host) override {
auto delegate =
std::make_unique<MockSpeculationHostDelegate>(render_frame_host);
delegate_ = delegate->AsWeakPtr();
return delegate;
}
base::WeakPtr<MockSpeculationHostDelegate> GetDelegate() { return delegate_; }
private:
raw_ptr<ContentBrowserClient> old_browser_client_ = nullptr;
base::WeakPtr<MockSpeculationHostDelegate> delegate_;
};
class PrefetcherTest : public RenderViewHostTestHarness {
public:
PrefetcherTest() = default;
void SetUp() override {
RenderViewHostTestHarness::SetUp();
browser_context_ = std::make_unique<TestBrowserContext>();
web_contents_ = TestWebContents::Create(
browser_context_.get(),
SiteInstanceImpl::Create(browser_context_.get()));
web_contents_->NavigateAndCommit(GetSameOriginUrl("/"));
prefetch_service_ =
std::make_unique<TestPrefetchService>(GetBrowserContext());
PrefetchDocumentManager::SetPrefetchServiceForTesting(
prefetch_service_.get());
}
void TearDown() override {
// The PrefetchService we created for the test contains a
// PrefetchOriginProber, which holds a raw pointer to the BrowserContext.
// When tearing down, it's important to free our PrefetchService
// before freeing the BrowserContext, to avoid any chance of a use after
// free.
PrefetchDocumentManager::SetPrefetchServiceForTesting(nullptr);
prefetch_service_.reset();
web_contents_.reset();
browser_context_.reset();
RenderViewHostTestHarness::TearDown();
}
RenderFrameHostImpl& GetPrimaryMainFrame() {
return web_contents_->GetPrimaryPage().GetMainDocument();
}
GURL GetSameOriginUrl(const std::string& path) {
return GURL("https://example.com" + path);
}
GURL GetCrossOriginUrl(const std::string& path) {
return GURL("https://other.example.com" + path);
}
TestPrefetchService* GetPrefetchService() { return prefetch_service_.get(); }
private:
std::unique_ptr<TestBrowserContext> browser_context_;
std::unique_ptr<TestWebContents> web_contents_;
std::unique_ptr<TestPrefetchService> prefetch_service_;
};
TEST_F(PrefetcherTest, ProcessCandidatesForPrefetch) {
MockContentBrowserClient browser_client;
auto prefetcher = Prefetcher(GetPrimaryMainFrame());
base::WeakPtr<MockSpeculationHostDelegate> delegate =
browser_client.GetDelegate();
ASSERT_TRUE(delegate);
// Create list of SpeculationCandidatePtrs.
std::vector<blink::mojom::SpeculationCandidatePtr> candidates;
auto candidate1 = blink::mojom::SpeculationCandidate::New();
candidate1->action = blink::mojom::SpeculationAction::kPrefetch;
candidate1->requires_anonymous_client_ip_when_cross_origin = true;
candidate1->url = GetCrossOriginUrl("/candidate1.html");
candidate1->referrer = blink::mojom::Referrer::New();
candidates.push_back(std::move(candidate1));
prefetcher.ProcessCandidatesForPrefetch(candidates);
EXPECT_TRUE(delegate->Candidates().empty());
EXPECT_EQ(1u, GetPrefetchService()->prefetches_.size());
EXPECT_FALSE(prefetcher.IsPrefetchAttemptFailedOrDiscarded(
GetCrossOriginUrl("/candidate1.html")));
GetPrefetchService()->prefetches_[0]->SetPrefetchStatus(
PrefetchStatus::kPrefetchFailedNetError);
EXPECT_TRUE(prefetcher.IsPrefetchAttemptFailedOrDiscarded(
GetCrossOriginUrl("/candidate1.html")));
}
} // namespace
} // namespace content
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