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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/idle_timer.h"
#include "base/message_loop.h"
#include "testing/gtest/include/gtest/gtest.h"
using base::Time;
using base::TimeDelta;
using base::IdleTimer;
namespace {
// We Mock the GetLastInputInfo function to return
// the time stored here.
static Time mock_timer_started;
bool MockIdleTimeSource(int32 *milliseconds_interval_since_last_event) {
TimeDelta delta = Time::Now() - mock_timer_started;
*milliseconds_interval_since_last_event =
static_cast<int32>(delta.InMilliseconds());
return true;
}
// TestIdle task fires after 100ms of idle time.
class TestIdleTask : public IdleTimer {
public:
TestIdleTask(bool repeat)
: IdleTimer(TimeDelta::FromMilliseconds(100), repeat),
idle_counter_(0) {
set_idle_time_source(MockIdleTimeSource);
}
int get_idle_counter() { return idle_counter_; }
virtual void OnIdle() {
idle_counter_++;
}
private:
int idle_counter_;
};
// A task to help us quit the test.
class TestFinishedTask {
public:
TestFinishedTask() {}
void Run() {
MessageLoop::current()->Quit();
}
};
// A timer which resets the idle clock.
class ResetIdleTask {
public:
ResetIdleTask() {}
void Run() {
mock_timer_started = Time::Now();
}
};
class IdleTimerTest : public testing::Test {
private:
// IdleTimer requires a UI message loop on the current thread.
MessageLoopForUI message_loop_;
};
///////////////////////////////////////////////////////////////////////////////
// NoRepeat tests:
// A non-repeating idle timer will fire once on idle, and
// then will not fire again unless it goes non-idle first.
TEST_F(IdleTimerTest, NoRepeatIdle) {
// Create an IdleTimer, which should fire once after 100ms.
// Create a Quit timer which will fire after 1s.
// Verify that we fired exactly once.
mock_timer_started = Time::Now();
TestIdleTask test_task(false);
TestFinishedTask finish_task;
base::OneShotTimer<TestFinishedTask> timer;
timer.Start(TimeDelta::FromSeconds(1), &finish_task, &TestFinishedTask::Run);
test_task.Start();
MessageLoop::current()->Run();
EXPECT_EQ(test_task.get_idle_counter(), 1);
}
TEST_F(IdleTimerTest, NoRepeatFlipIdleOnce) {
// Create an IdleTimer, which should fire once after 100ms.
// Create a Quit timer which will fire after 1s.
// Create a timer to reset once, idle after 500ms.
// Verify that we fired exactly twice.
mock_timer_started = Time::Now();
TestIdleTask test_task(false);
TestFinishedTask finish_task;
ResetIdleTask reset_task;
base::OneShotTimer<TestFinishedTask> t1;
t1.Start(TimeDelta::FromMilliseconds(1000), &finish_task,
&TestFinishedTask::Run);
base::OneShotTimer<ResetIdleTask> t2;
t2.Start(TimeDelta::FromMilliseconds(500), &reset_task,
&ResetIdleTask::Run);
test_task.Start();
MessageLoop::current()->Run();
EXPECT_EQ(test_task.get_idle_counter(), 2);
}
TEST_F(IdleTimerTest, NoRepeatNotIdle) {
// Create an IdleTimer, which should fire once after 100ms.
// Create a Quit timer which will fire after 1s.
// Create a timer to reset idle every 50ms.
// Verify that we never fired.
mock_timer_started = Time::Now();
TestIdleTask test_task(false);
TestFinishedTask finish_task;
ResetIdleTask reset_task;
base::OneShotTimer<TestFinishedTask> t;
t.Start(TimeDelta::FromMilliseconds(1000), &finish_task,
&TestFinishedTask::Run);
base::RepeatingTimer<ResetIdleTask> reset_timer;
reset_timer.Start(TimeDelta::FromMilliseconds(50), &reset_task,
&ResetIdleTask::Run);
test_task.Start();
MessageLoop::current()->Run();
reset_timer.Stop();
EXPECT_EQ(test_task.get_idle_counter(), 0);
}
///////////////////////////////////////////////////////////////////////////////
// Repeat tests:
// A repeating idle timer will fire repeatedly on each interval, as long
// as it has been idle. So, if the machine remains idle, it will continue
// firing over and over.
TEST_F(IdleTimerTest, Repeat) {
// Create an IdleTimer, which should fire repeatedly after 100ms.
// Create a Quit timer which will fire after 1.05s.
// Verify that we fired 10 times.
mock_timer_started = Time::Now();
TestIdleTask test_task(true);
TestFinishedTask finish_task;
base::OneShotTimer<TestFinishedTask> t;
t.Start(TimeDelta::FromMilliseconds(1050), &finish_task,
&TestFinishedTask::Run);
test_task.Start();
MessageLoop::current()->Run();
// In a perfect world, the idle_counter should be 10. However,
// since timers aren't guaranteed to fire perfectly, this can
// be less. Just expect more than 5 and no more than 10.
EXPECT_GT(test_task.get_idle_counter(), 5);
EXPECT_LE(test_task.get_idle_counter(), 10);
}
// TODO(darin): http://code.google.com/p/chromium/issues/detail?id=3780
TEST_F(IdleTimerTest, DISABLED_RepeatIdleReset) {
// Create an IdleTimer, which should fire repeatedly after 100ms.
// Create a Quit timer which will fire after 1s.
// Create a reset timer, which fires after 550ms
// Verify that we fired 9 times.
mock_timer_started = Time::Now();
TestIdleTask test_task(true);
ResetIdleTask reset_task;
TestFinishedTask finish_task;
base::OneShotTimer<TestFinishedTask> t1;
t1.Start(TimeDelta::FromMilliseconds(1000), &finish_task,
&TestFinishedTask::Run);
base::OneShotTimer<ResetIdleTask> t2;
t2.Start(TimeDelta::FromMilliseconds(550), &reset_task,
&ResetIdleTask::Run);
test_task.Start();
MessageLoop::current()->Run();
// In a perfect world, the idle_counter should be 9. However,
// since timers aren't guaranteed to fire perfectly, this can
// be less. Just expect more than 5 and no more than 9.
EXPECT_GT(test_task.get_idle_counter(), 5);
EXPECT_LE(test_task.get_idle_counter(), 9);
}
TEST_F(IdleTimerTest, RepeatNotIdle) {
// Create an IdleTimer, which should fire repeatedly after 100ms.
// Create a Quit timer which will fire after 1s.
// Create a timer to reset idle every 50ms.
// Verify that we never fired.
mock_timer_started = Time::Now();
TestIdleTask test_task(true);
TestFinishedTask finish_task;
ResetIdleTask reset_task;
base::OneShotTimer<TestFinishedTask> t;
t.Start(TimeDelta::FromMilliseconds(1000), &finish_task,
&TestFinishedTask::Run);
base::RepeatingTimer<ResetIdleTask> reset_timer;
reset_timer.Start(TimeDelta::FromMilliseconds(50), &reset_task,
&ResetIdleTask::Run);
test_task.Start();
MessageLoop::current()->Run();
reset_timer.Stop();
EXPECT_EQ(test_task.get_idle_counter(), 0);
}
} // namespace
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