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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <set>
#include "base/memory/raw_ptr.h"
#include "chrome/browser/task_manager/providers/spare_render_process_host_task_provider.h"
#include "chrome/browser/task_manager/task_manager_observer.h"
#include "chrome/test/base/testing_profile.h"
#include "content/public/test/browser_task_environment.h"
#include "content/public/test/mock_render_process_host.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::Contains;
using testing::Matcher;
using testing::Not;
using testing::Property;
using testing::Test;
namespace task_manager {
namespace {
// Matcher that checks if the set contains an element where
// GetChildProcessUniqueID() == rph_id;
Matcher<std::set<Task*>> ContainsRphId(int rph_id) {
return Contains(Property(&Task::GetChildProcessUniqueID, rph_id));
}
} // namespace
class SpareRenderProcessHostTaskTest : public Test,
public TaskProviderObserver {
public:
SpareRenderProcessHostTaskTest() = default;
~SpareRenderProcessHostTaskTest() override = default;
// task_manager::TaskProviderObserver:
void TaskAdded(Task* task) override {
bool inserted = provided_tasks_.insert(task).second;
CHECK(inserted);
}
void TaskRemoved(Task* task) override {
size_t removed = provided_tasks_.erase(task);
CHECK_EQ(removed, 1u);
}
void OnSpareRenderProcessHostReady(
SpareRenderProcessHostTaskProvider* provider,
content::RenderProcessHost* render_process) {
provider->OnSpareRenderProcessHostReady(render_process);
}
void OnSpareRenderProcessHostRemoved(
SpareRenderProcessHostTaskProvider* provider,
content::RenderProcessHost* render_process) {
provider->OnSpareRenderProcessHostRemoved(render_process);
}
const std::set<Task*>& provided_tasks() const { return provided_tasks_; }
private:
std::set<Task*> provided_tasks_;
content::BrowserTaskEnvironment task_environment_;
};
TEST_F(SpareRenderProcessHostTaskTest, Basic) {
SpareRenderProcessHostTaskProvider provider;
provider.SetObserver(this);
auto browser_context = std::make_unique<TestingProfile>();
auto render_process1 =
std::make_unique<content::MockRenderProcessHost>(browser_context.get());
auto render_process2 =
std::make_unique<content::MockRenderProcessHost>(browser_context.get());
EXPECT_TRUE(provided_tasks().empty());
OnSpareRenderProcessHostReady(&provider, render_process1.get());
EXPECT_THAT(provided_tasks(),
ContainsRphId(render_process1->GetDeprecatedID()));
EXPECT_THAT(provided_tasks(),
Not(ContainsRphId(render_process2->GetDeprecatedID())));
OnSpareRenderProcessHostReady(&provider, render_process2.get());
EXPECT_THAT(provided_tasks(),
ContainsRphId(render_process1->GetDeprecatedID()));
EXPECT_THAT(provided_tasks(),
ContainsRphId(render_process2->GetDeprecatedID()));
OnSpareRenderProcessHostRemoved(&provider, render_process1.get());
EXPECT_THAT(provided_tasks(),
Not(ContainsRphId(render_process1->GetDeprecatedID())));
EXPECT_THAT(provided_tasks(),
ContainsRphId(render_process2->GetDeprecatedID()));
OnSpareRenderProcessHostRemoved(&provider, render_process2.get());
EXPECT_TRUE(provided_tasks().empty());
provider.ClearObserver();
}
} // namespace task_manager
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