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// Copyright 2025 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/renderer_host/process_selection_deferring_condition_runner.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/test/mock_callback.h"
#include "content/browser/renderer_host/navigation_request.h"
#include "content/public/browser/process_selection_deferring_condition.h"
#include "content/public/browser/process_selection_user_data.h"
#include "content/public/test/navigation_simulator.h"
#include "content/public/test/test_renderer_host.h"
#include "content/test/mock_process_selection_deferring_condition_tester.h"
#include "content/test/test_content_browser_client.h"
#include "testing/gmock/include/gmock/gmock.h"
namespace content {
namespace {
// A simple ProcessSelectionUserData::Data implementation for testing.
class ProcessSelectionTestData
: public ProcessSelectionUserData::Data<ProcessSelectionTestData> {
public:
explicit ProcessSelectionTestData(int value) : value_(value) {}
int value() const { return value_; }
private:
friend ProcessSelectionUserData::Data<ProcessSelectionTestData>;
PROCESS_SELECTION_USER_DATA_KEY_DECL();
int value_;
};
PROCESS_SELECTION_USER_DATA_KEY_IMPL(ProcessSelectionTestData);
class ProcessSelectionDeferringBrowserClient : public TestContentBrowserClient {
public:
ProcessSelectionDeferringBrowserClient() = default;
~ProcessSelectionDeferringBrowserClient() override = default;
std::vector<std::unique_ptr<ProcessSelectionDeferringCondition>>
CreateProcessSelectionDeferringConditionsForNavigation(
NavigationHandle& navigation_handle) override {
return std::move(conditions_);
}
void AddCondition(
std::unique_ptr<ProcessSelectionDeferringCondition> condition) {
conditions_.push_back(std::move(condition));
}
private:
std::vector<std::unique_ptr<ProcessSelectionDeferringCondition>> conditions_;
};
} // namespace
class ProcessSelectionDeferringConditionRunnerTest
: public RenderViewHostTestHarness {
public:
ProcessSelectionDeferringConditionRunnerTest() = default;
void SetUp() override {
RenderViewHostTestHarness::SetUp();
browser_client_ =
std::make_unique<ProcessSelectionDeferringBrowserClient>();
old_browser_client_ = SetBrowserClientForTesting(browser_client_.get());
navigation_ = NavigationSimulator::CreateRendererInitiated(
GURL("https://example.com"), main_rfh());
navigation_->Start();
}
void TearDown() override {
SetBrowserClientForTesting(old_browser_client_);
// Release the runner so that the NavigationHandle is released before
// tearing down the test harness.
runner_.reset();
RenderViewHostTestHarness::TearDown();
}
ProcessSelectionDeferringBrowserClient* browser_client() {
return browser_client_.get();
}
ProcessSelectionDeferringConditionRunner* CreateRunner() {
CHECK(navigation_);
runner_ = ProcessSelectionDeferringConditionRunner::Create(
*NavigationRequest::From(navigation_->GetNavigationHandle()));
return runner_.get();
}
NavigationHandle* navigation_handle() {
return navigation_->GetNavigationHandle();
}
private:
std::unique_ptr<ProcessSelectionDeferringBrowserClient> browser_client_;
raw_ptr<ContentBrowserClient> old_browser_client_ = nullptr;
std::unique_ptr<NavigationSimulator> navigation_;
std::unique_ptr<ProcessSelectionDeferringConditionRunner> runner_;
};
TEST_F(ProcessSelectionDeferringConditionRunnerTest,
NoConditionsRunsTheProvidedCallback) {
auto* runner = CreateRunner();
base::MockCallback<base::OnceClosure> callback;
EXPECT_CALL(callback, Run());
runner->WillSelectFinalProcess(callback.Get());
}
TEST_F(ProcessSelectionDeferringConditionRunnerTest,
DoesNotCallCallbackUntilDeferringConditionResumes) {
MockProcessSelectionDeferringConditionTester condition(
*navigation_handle(), ProcessSelectionDeferringCondition::Result::kDefer);
browser_client()->AddCondition(condition.Release());
auto* runner = CreateRunner();
base::MockCallback<base::OnceClosure> callback;
EXPECT_CALL(callback, Run()).Times(0);
runner->WillSelectFinalProcess(callback.Get());
// The callback should not be called because the condition should be
// deferring.
EXPECT_TRUE(condition.WasOnWillSelectFinalProcessCalled());
testing::Mock::VerifyAndClearExpectations(&callback);
EXPECT_CALL(callback, Run());
condition.CallResumeClosure();
}
TEST_F(ProcessSelectionDeferringConditionRunnerTest,
ProceedConditionCallbackIsCalledSynchronously) {
MockProcessSelectionDeferringConditionTester condition(
*navigation_handle(),
ProcessSelectionDeferringCondition::Result::kProceed);
browser_client()->AddCondition(condition.Release());
auto* runner = CreateRunner();
base::MockCallback<base::OnceClosure> callback;
EXPECT_CALL(callback, Run());
runner->WillSelectFinalProcess(callback.Get());
EXPECT_TRUE(condition.WasOnWillSelectFinalProcessCalled());
}
TEST_F(ProcessSelectionDeferringConditionRunnerTest,
ProvidedCallbackIsRunOnlyAfterAllConditionsAreDone) {
MockProcessSelectionDeferringConditionTester condition1(
*navigation_handle(), ProcessSelectionDeferringCondition::Result::kDefer);
MockProcessSelectionDeferringConditionTester condition2(
*navigation_handle(), ProcessSelectionDeferringCondition::Result::kDefer);
browser_client()->AddCondition(condition1.Release());
browser_client()->AddCondition(condition2.Release());
auto* runner = CreateRunner();
base::MockCallback<base::OnceClosure> callback;
runner->WillSelectFinalProcess(callback.Get());
EXPECT_CALL(callback, Run()).Times(0);
EXPECT_TRUE(condition1.WasOnWillSelectFinalProcessCalled());
EXPECT_FALSE(condition2.WasOnWillSelectFinalProcessCalled());
condition1.CallResumeClosure();
EXPECT_TRUE(condition2.WasOnWillSelectFinalProcessCalled());
// The callback should not have been called yet.
testing::Mock::VerifyAndClearExpectations(&callback);
// The callback should run after condition2 resumes.
EXPECT_CALL(callback, Run());
condition2.CallResumeClosure();
}
TEST_F(ProcessSelectionDeferringConditionRunnerTest,
ProceedConditionAfterDeferConditionCallsCallback) {
MockProcessSelectionDeferringConditionTester condition1(
*navigation_handle(), ProcessSelectionDeferringCondition::Result::kDefer);
MockProcessSelectionDeferringConditionTester condition2(
*navigation_handle(),
ProcessSelectionDeferringCondition::Result::kProceed);
browser_client()->AddCondition(condition1.Release());
browser_client()->AddCondition(condition2.Release());
auto* runner = CreateRunner();
base::MockCallback<base::OnceClosure> callback;
EXPECT_CALL(callback, Run()).Times(0);
runner->WillSelectFinalProcess(callback.Get());
EXPECT_TRUE(condition1.WasOnWillSelectFinalProcessCalled());
EXPECT_FALSE(condition2.WasOnWillSelectFinalProcessCalled());
// The callback should not have been called yet.
testing::Mock::VerifyAndClearExpectations(&callback);
EXPECT_CALL(callback, Run());
condition1.CallResumeClosure();
EXPECT_TRUE(condition2.WasOnWillSelectFinalProcessCalled());
}
TEST_F(ProcessSelectionDeferringConditionRunnerTest,
OnRequestRedirectedCallsOnRequestRedirectedHandlers) {
MockProcessSelectionDeferringConditionTester condition1(
*navigation_handle(),
ProcessSelectionDeferringCondition::Result::kProceed);
MockProcessSelectionDeferringConditionTester condition2(
*navigation_handle(),
ProcessSelectionDeferringCondition::Result::kProceed);
browser_client()->AddCondition(condition1.Release());
browser_client()->AddCondition(condition2.Release());
auto* runner = CreateRunner();
runner->OnRequestRedirected();
// All conditions should have their request redirected call count incremented.
EXPECT_EQ(condition1.GetOnRequestRedirectedCallCount(), 1);
EXPECT_EQ(condition2.GetOnRequestRedirectedCallCount(), 1);
// Redirecting again should call the handlers again.
runner->OnRequestRedirected();
EXPECT_EQ(condition1.GetOnRequestRedirectedCallCount(), 2);
EXPECT_EQ(condition2.GetOnRequestRedirectedCallCount(), 2);
}
TEST_F(ProcessSelectionDeferringConditionRunnerTest,
ConditionCanSetProcessSelectionUserData) {
// Define a simple `ProcessSelectionDeferringCondition` that sets a value on
// its `ProcessSelectionUserData`.
class ProcessSelectionDataSettingCondition
: public ProcessSelectionDeferringCondition {
public:
explicit ProcessSelectionDataSettingCondition(
NavigationHandle& navigation_handle)
: ProcessSelectionDeferringCondition(navigation_handle) {}
Result OnWillSelectFinalProcess(base::OnceClosure resume) override {
ProcessSelectionUserData& user_data = GetProcessSelectionUserData();
user_data.SetUserData(ProcessSelectionTestData::UserDataKey(),
std::make_unique<ProcessSelectionTestData>(42));
return Result::kProceed;
}
};
browser_client()->AddCondition(
std::make_unique<ProcessSelectionDataSettingCondition>(
*navigation_handle()));
auto* runner = CreateRunner();
base::MockCallback<base::OnceClosure> callback;
EXPECT_CALL(callback, Run());
runner->WillSelectFinalProcess(callback.Get());
const ProcessSelectionTestData* retrieved_data =
ProcessSelectionTestData::FromProcessSelectionUserData(
navigation_handle()->GetProcessSelectionUserData());
EXPECT_EQ(42, retrieved_data->value());
}
} // namespace content
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