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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "components/scheduler/renderer/throttling_helper.h" | |
6 | |
7 #include "base/callback.h" | |
8 #include "base/memory/scoped_ptr.h" | |
9 #include "base/test/simple_test_tick_clock.h" | |
10 #include "cc/test/ordered_simple_task_runner.h" | |
11 #include "components/scheduler/base/test_time_source.h" | |
12 #include "components/scheduler/child/scheduler_tqm_delegate_for_test.h" | |
13 #include "components/scheduler/renderer/renderer_scheduler_impl.h" | |
14 #include "components/scheduler/renderer/web_frame_scheduler_impl.h" | |
15 #include "components/scheduler/renderer/web_view_scheduler_impl.h" | |
16 #include "testing/gmock/include/gmock/gmock.h" | |
17 #include "testing/gtest/include/gtest/gtest.h" | |
18 | |
19 using testing::ElementsAre; | |
20 | |
21 namespace scheduler { | |
22 | |
23 class ThrottlingHelperTest : public testing::Test { | |
24 public: | |
25 ThrottlingHelperTest() {} | |
26 ~ThrottlingHelperTest() override {} | |
27 | |
28 void SetUp() override { | |
29 clock_.reset(new base::SimpleTestTickClock()); | |
30 clock_->Advance(base::TimeDelta::FromMicroseconds(5000)); | |
31 mock_task_runner_ = | |
32 make_scoped_refptr(new cc::OrderedSimpleTaskRunner(clock_.get(), true)); | |
33 delegate_ = SchedulerTqmDelegateForTest::Create( | |
34 mock_task_runner_, make_scoped_ptr(new TestTimeSource(clock_.get()))); | |
35 scheduler_.reset(new RendererSchedulerImpl(delegate_)); | |
36 throttling_helper_ = scheduler_->throttling_helper(); | |
37 timer_queue_ = scheduler_->NewTimerTaskRunner("test_queue"); | |
38 } | |
39 | |
40 void TearDown() override { | |
41 scheduler_->Shutdown(); | |
42 scheduler_.reset(); | |
43 } | |
44 | |
45 protected: | |
46 scoped_ptr<base::SimpleTestTickClock> clock_; | |
47 scoped_refptr<cc::OrderedSimpleTaskRunner> mock_task_runner_; | |
48 scoped_refptr<SchedulerTqmDelegate> delegate_; | |
49 scoped_ptr<RendererSchedulerImpl> scheduler_; | |
50 scoped_refptr<TaskQueue> timer_queue_; | |
51 ThrottlingHelper* throttling_helper_; // NOT OWNED | |
52 | |
53 DISALLOW_COPY_AND_ASSIGN(ThrottlingHelperTest); | |
54 }; | |
55 | |
56 TEST_F(ThrottlingHelperTest, DelayToNextRunTimeInSeconds) { | |
57 EXPECT_EQ(base::TimeDelta::FromSecondsD(1.0), | |
58 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
59 base::TimeTicks() + base::TimeDelta::FromSecondsD(0.0))); | |
60 | |
61 EXPECT_EQ(base::TimeDelta::FromSecondsD(0.9), | |
62 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
63 base::TimeTicks() + base::TimeDelta::FromSecondsD(0.1))); | |
64 | |
65 EXPECT_EQ(base::TimeDelta::FromSecondsD(0.8), | |
66 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
67 base::TimeTicks() + base::TimeDelta::FromSecondsD(0.2))); | |
68 | |
69 EXPECT_EQ(base::TimeDelta::FromSecondsD(0.5), | |
70 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
71 base::TimeTicks() + base::TimeDelta::FromSecondsD(0.5))); | |
72 | |
73 EXPECT_EQ(base::TimeDelta::FromSecondsD(0.2), | |
74 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
75 base::TimeTicks() + base::TimeDelta::FromSecondsD(0.8))); | |
76 | |
77 EXPECT_EQ(base::TimeDelta::FromSecondsD(0.1), | |
78 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
79 base::TimeTicks() + base::TimeDelta::FromSecondsD(0.9))); | |
80 | |
81 EXPECT_EQ(base::TimeDelta::FromSecondsD(1.0), | |
82 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
83 base::TimeTicks() + base::TimeDelta::FromSecondsD(1.0))); | |
84 | |
85 EXPECT_EQ(base::TimeDelta::FromSecondsD(0.9), | |
86 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
87 base::TimeTicks() + base::TimeDelta::FromSecondsD(1.1))); | |
88 | |
89 EXPECT_EQ(base::TimeDelta::FromSecondsD(1.0), | |
90 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
91 base::TimeTicks() + base::TimeDelta::FromSecondsD(8.0))); | |
92 | |
93 EXPECT_EQ(base::TimeDelta::FromSecondsD(0.9), | |
94 ThrottlingHelper::DelayToNextRunTimeInSeconds( | |
95 base::TimeTicks() + base::TimeDelta::FromSecondsD(8.1))); | |
96 } | |
97 | |
98 namespace { | |
99 void TestTask(std::vector<base::TimeTicks>* run_times, | |
100 base::SimpleTestTickClock* clock) { | |
101 run_times->push_back(clock->NowTicks()); | |
102 } | |
103 } // namespace | |
104 | |
105 TEST_F(ThrottlingHelperTest, TimerAlignment) { | |
106 std::vector<base::TimeTicks> run_times; | |
107 timer_queue_->PostDelayedTask(FROM_HERE, | |
108 base::Bind(&TestTask, &run_times, clock_.get()), | |
109 base::TimeDelta::FromMilliseconds(200.0)); | |
110 | |
111 timer_queue_->PostDelayedTask(FROM_HERE, | |
112 base::Bind(&TestTask, &run_times, clock_.get()), | |
113 base::TimeDelta::FromMilliseconds(800.0)); | |
114 | |
115 timer_queue_->PostDelayedTask(FROM_HERE, | |
116 base::Bind(&TestTask, &run_times, clock_.get()), | |
117 base::TimeDelta::FromMilliseconds(1200.0)); | |
118 | |
119 timer_queue_->PostDelayedTask(FROM_HERE, | |
120 base::Bind(&TestTask, &run_times, clock_.get()), | |
121 base::TimeDelta::FromMilliseconds(8300.0)); | |
122 | |
123 throttling_helper_->Throttle(timer_queue_.get()); | |
124 | |
125 mock_task_runner_->RunUntilIdle(); | |
126 | |
127 // Times are aligned to a multipple of 1000 milliseconds. | |
128 EXPECT_THAT( | |
129 run_times, | |
130 ElementsAre( | |
131 base::TimeTicks() + base::TimeDelta::FromMilliseconds(1000.0), | |
132 base::TimeTicks() + base::TimeDelta::FromMilliseconds(1000.0), | |
133 base::TimeTicks() + base::TimeDelta::FromMilliseconds(2000.0), | |
134 base::TimeTicks() + base::TimeDelta::FromMilliseconds(9000.0))); | |
135 } | |
136 | |
137 TEST_F(ThrottlingHelperTest, TimerAlignment_Unthrottled) { | |
138 std::vector<base::TimeTicks> run_times; | |
139 base::TimeTicks start_time = clock_->NowTicks(); | |
140 timer_queue_->PostDelayedTask(FROM_HERE, | |
141 base::Bind(&TestTask, &run_times, clock_.get()), | |
142 base::TimeDelta::FromMilliseconds(200.0)); | |
143 | |
144 timer_queue_->PostDelayedTask(FROM_HERE, | |
145 base::Bind(&TestTask, &run_times, clock_.get()), | |
146 base::TimeDelta::FromMilliseconds(800.0)); | |
147 | |
148 timer_queue_->PostDelayedTask(FROM_HERE, | |
149 base::Bind(&TestTask, &run_times, clock_.get()), | |
150 base::TimeDelta::FromMilliseconds(1200.0)); | |
151 | |
152 timer_queue_->PostDelayedTask(FROM_HERE, | |
153 base::Bind(&TestTask, &run_times, clock_.get()), | |
154 base::TimeDelta::FromMilliseconds(8300.0)); | |
155 | |
156 throttling_helper_->Throttle(timer_queue_.get()); | |
157 throttling_helper_->Unthrottle(timer_queue_.get()); | |
158 | |
159 mock_task_runner_->RunUntilIdle(); | |
160 | |
161 // Times are not aligned. | |
162 EXPECT_THAT( | |
163 run_times, | |
164 ElementsAre(start_time + base::TimeDelta::FromMilliseconds(200.0), | |
165 start_time + base::TimeDelta::FromMilliseconds(800.0), | |
166 start_time + base::TimeDelta::FromMilliseconds(1200.0), | |
167 start_time + base::TimeDelta::FromMilliseconds(8300.0))); | |
168 } | |
169 | |
170 TEST_F(ThrottlingHelperTest, WakeUpForNonDelayedTask) { | |
171 std::vector<base::TimeTicks> run_times; | |
172 | |
173 // Nothing is posted on timer_queue_ so PumpThrottledTasks will not tick. | |
174 throttling_helper_->Throttle(timer_queue_.get()); | |
175 | |
176 // Posting a task should trigger the pump. | |
177 timer_queue_->PostTask(FROM_HERE, | |
178 base::Bind(&TestTask, &run_times, clock_.get())); | |
179 | |
180 mock_task_runner_->RunUntilIdle(); | |
181 EXPECT_THAT(run_times, | |
182 ElementsAre(base::TimeTicks() + | |
183 base::TimeDelta::FromMilliseconds(1000.0))); | |
184 } | |
185 | |
186 TEST_F(ThrottlingHelperTest, WakeUpForDelayedTask) { | |
187 std::vector<base::TimeTicks> run_times; | |
188 | |
189 // Nothing is posted on timer_queue_ so PumpThrottledTasks will not tick. | |
190 throttling_helper_->Throttle(timer_queue_.get()); | |
191 | |
192 // Posting a task should trigger the pump. | |
193 timer_queue_->PostDelayedTask(FROM_HERE, | |
194 base::Bind(&TestTask, &run_times, clock_.get()), | |
195 base::TimeDelta::FromMilliseconds(1200.0)); | |
196 | |
197 mock_task_runner_->RunUntilIdle(); | |
198 EXPECT_THAT(run_times, | |
199 ElementsAre(base::TimeTicks() + | |
200 base::TimeDelta::FromMilliseconds(2000.0))); | |
201 } | |
202 | |
203 } // namespace scheduler | |
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