jank_monitor_impl_unittest.cc | Explore in Territory

// Copyright 2019 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/scheduler/responsiveness/jank_monitor_impl.h"

#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/raw_ptr.h"
#include "base/synchronization/waitable_event.h"
#include "base/test/bind.h"
#include "base/test/test_mock_time_task_runner.h"
#include "content/browser/scheduler/responsiveness/native_event_observer.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/test/browser_task_environment.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace content {
namespace responsiveness {

class TestObserver : public JankMonitor::Observer { … };

class TestMetricSource : public MetricSource { … };

class TestJankMonitor : public JankMonitorImpl { … };

class JankMonitorTest : public testing::Test { … };

// Test life cycle management of the jank monitor: DestroyOnMonitorThread()
// and dtor.
TEST_F(JankMonitorTest, LifeCycle) { … }

#define VALIDATE_TEST_OBSERVER_CALLS …

// Test monitor with UI thread janks.
TEST_F(JankMonitorTest, JankUIThread) { … }

// Test monitor with an IO thread jank.
TEST_F(JankMonitorTest, JankIOThread) { … }

// Test monitor with a reentrant UI thread task. The reentrant task shouldn't
// be reported by the monitor.
TEST_F(JankMonitorTest, JankUIThreadReentrant) { … }

// Test that the jank monitor shouldn't report a jank if a nested runloop is
// responsive.
TEST_F(JankMonitorTest, ReentrantResponsive) { … }

// Test that the jank monitor reports only the janky task running in the nested
// runloop. The enclosing task shouldn't be reported even if its total duration
// is longer than the jank threshold.
TEST_F(JankMonitorTest, JankNestedRunLoop) { … }

// Test monitor with overlapping janks on both threads. Only the jank started
// first should be reported.
TEST_F(JankMonitorTest, JankUIAndIOThread) { … }

// Test stopping monitor timer when there is no activity and starting monitor
// timer on new activity.
TEST_F(JankMonitorTest, StartStopTimer) { … }

class TestJankMonitorShutdownRace : public JankMonitorImpl { … };

// Test that completion of shutdown shouldn't leave the timer in the running
// state.
TEST(JankMonitorShutdownTest, ShutdownRace_TimerRestarted) { … }

class TestJankMonitorShutdownRaceTimerFired : public JankMonitorImpl { … };

// Test that the monitor timer shouldn't race with shutdown of MetricSource and
// then crashes.
TEST(JankMonitorShutdownTest, ShutdownRace_TimerFired) { … }

#undef VALIDATE_TEST_OBSERVER_CALLS

}  // namespace responsiveness.
}  // namespace content.
chromium/content/browser/scheduler/responsiveness/jank_monitor_impl_unittest.cc
