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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/resource_coordinator/lifecycle_unit_base.h"
#include "base/test/simple_test_clock.h"
#include "base/test/simple_test_tick_clock.h"
#include "chrome/browser/metrics/desktop_session_duration/desktop_session_duration_tracker.h"
#include "chrome/browser/resource_coordinator/lifecycle_unit_observer.h"
#include "chrome/browser/resource_coordinator/lifecycle_unit_source_base.h"
#include "chrome/browser/resource_coordinator/test_lifecycle_unit.h"
#include "chrome/browser/resource_coordinator/time.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace resource_coordinator {
namespace {
class MockLifecycleUnitObserver : public LifecycleUnitObserver {
public:
MockLifecycleUnitObserver() = default;
MockLifecycleUnitObserver(const MockLifecycleUnitObserver&) = delete;
MockLifecycleUnitObserver& operator=(const MockLifecycleUnitObserver&) =
delete;
MOCK_METHOD3(OnLifecycleUnitStateChanged,
void(LifecycleUnit*,
LifecycleUnitState,
LifecycleUnitStateChangeReason));
MOCK_METHOD1(OnLifecycleUnitDestroyed, void(LifecycleUnit*));
};
class LifecycleUnitBaseTest : public testing::Test {
public:
LifecycleUnitBaseTest(const LifecycleUnitBaseTest&) = delete;
LifecycleUnitBaseTest& operator=(const LifecycleUnitBaseTest&) = delete;
protected:
LifecycleUnitBaseTest() {
metrics::DesktopSessionDurationTracker::Initialize();
}
~LifecycleUnitBaseTest() override {
metrics::DesktopSessionDurationTracker::CleanupForTesting();
}
base::SimpleTestClock test_clock_;
base::SimpleTestTickClock test_tick_clock_;
ScopedSetClocksForTesting scoped_set_clocks_for_testing_{&test_clock_,
&test_tick_clock_};
testing::StrictMock<MockLifecycleUnitObserver> observer_;
};
} // namespace
// Verify that GetID() returns different ids for different LifecycleUnits, but
// always the same id for the same LifecycleUnit.
TEST_F(LifecycleUnitBaseTest, GetID) {
TestLifecycleUnit a;
TestLifecycleUnit b;
TestLifecycleUnit c;
EXPECT_NE(a.GetID(), b.GetID());
EXPECT_NE(a.GetID(), c.GetID());
EXPECT_NE(b.GetID(), c.GetID());
EXPECT_EQ(a.GetID(), a.GetID());
EXPECT_EQ(b.GetID(), b.GetID());
EXPECT_EQ(c.GetID(), c.GetID());
}
// Verify that the state change time is updated when the state changes.
TEST_F(LifecycleUnitBaseTest, SetStateUpdatesTime) {
TestLifecycleUnit lifecycle_unit;
EXPECT_EQ(NowTicks(), lifecycle_unit.GetStateChangeTime());
test_tick_clock_.Advance(base::Seconds(1));
base::TimeTicks first_state_change_time = NowTicks();
lifecycle_unit.SetState(LifecycleUnitState::DISCARDED,
LifecycleUnitStateChangeReason::BROWSER_INITIATED);
EXPECT_EQ(first_state_change_time, lifecycle_unit.GetStateChangeTime());
test_tick_clock_.Advance(base::Seconds(1));
EXPECT_EQ(first_state_change_time, lifecycle_unit.GetStateChangeTime());
}
// Verify that observers are notified when the state changes and when the
// LifecycleUnit is destroyed.
TEST_F(LifecycleUnitBaseTest, SetStateNotifiesObservers) {
TestLifecycleUnit lifecycle_unit;
lifecycle_unit.AddObserver(&observer_);
// Observer is notified when the state changes.
EXPECT_CALL(observer_,
OnLifecycleUnitStateChanged(
&lifecycle_unit, lifecycle_unit.GetState(),
LifecycleUnitStateChangeReason::BROWSER_INITIATED));
lifecycle_unit.SetState(LifecycleUnitState::DISCARDED,
LifecycleUnitStateChangeReason::BROWSER_INITIATED);
testing::Mock::VerifyAndClear(&observer_);
// Observer isn't notified when the state stays the same.
lifecycle_unit.SetState(LifecycleUnitState::DISCARDED,
LifecycleUnitStateChangeReason::BROWSER_INITIATED);
lifecycle_unit.RemoveObserver(&observer_);
}
// Verify that observers are notified when the LifecycleUnit is destroyed.
TEST_F(LifecycleUnitBaseTest, DestroyNotifiesObservers) {
{
TestLifecycleUnit lifecycle_unit;
lifecycle_unit.AddObserver(&observer_);
EXPECT_CALL(observer_, OnLifecycleUnitDestroyed(&lifecycle_unit));
}
testing::Mock::VerifyAndClear(&observer_);
}
namespace {
class MockLifecycleUnitSource : public LifecycleUnitSourceBase {
public:
MockLifecycleUnitSource() = default;
~MockLifecycleUnitSource() override = default;
MOCK_METHOD0(OnFirstLifecycleUnitCreated, void());
MOCK_METHOD0(OnAllLifecycleUnitsDestroyed, void());
};
} // namespace
TEST_F(LifecycleUnitBaseTest, SourceIsNotifiedOfUnitDeath) {
MockLifecycleUnitSource source;
EXPECT_EQ(0u, source.lifecycle_unit_count());
EXPECT_CALL(source, OnFirstLifecycleUnitCreated());
std::unique_ptr<TestLifecycleUnit> unit1 =
std::make_unique<TestLifecycleUnit>(&source);
testing::Mock::VerifyAndClear(&source);
EXPECT_EQ(1u, source.lifecycle_unit_count());
std::unique_ptr<TestLifecycleUnit> unit2 =
std::make_unique<TestLifecycleUnit>(&source);
testing::Mock::VerifyAndClear(&source);
EXPECT_EQ(2u, source.lifecycle_unit_count());
unit1.reset();
testing::Mock::VerifyAndClear(&source);
EXPECT_EQ(1u, source.lifecycle_unit_count());
EXPECT_CALL(source, OnAllLifecycleUnitsDestroyed());
unit2.reset();
testing::Mock::VerifyAndClear(&source);
EXPECT_EQ(0u, source.lifecycle_unit_count());
}
} // namespace resource_coordinator
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