diff options
Diffstat (limited to 'chromium/cc/scheduler/delay_based_time_source_unittest.cc')
| -rw-r--r-- | chromium/cc/scheduler/delay_based_time_source_unittest.cc | 133 |
1 files changed, 12 insertions, 121 deletions
diff --git a/chromium/cc/scheduler/delay_based_time_source_unittest.cc b/chromium/cc/scheduler/delay_based_time_source_unittest.cc index 77d570f1d92..df84c978e57 100644 --- a/chromium/cc/scheduler/delay_based_time_source_unittest.cc +++ b/chromium/cc/scheduler/delay_based_time_source_unittest.cc @@ -88,7 +88,7 @@ TEST(DelayBasedTimeSource, NextDelaySaneWhenExactlyOnRequestedTime) { FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); timer->SetClient(&client); timer->SetActive(true); - // Run the first tick. + // Run the first task, as that activates the timer and picks up a timebase. task_runner->RunPendingTasks(); EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); @@ -109,7 +109,7 @@ TEST(DelayBasedTimeSource, NextDelaySaneWhenSlightlyAfterRequestedTime) { FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); timer->SetClient(&client); timer->SetActive(true); - // Run the first tick. + // Run the first task, as that activates the timer and picks up a timebase. task_runner->RunPendingTasks(); EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); @@ -122,7 +122,7 @@ TEST(DelayBasedTimeSource, NextDelaySaneWhenSlightlyAfterRequestedTime) { } // At 60Hz, when the tick returns at exactly 2*interval after the requested next -// time, make sure a 0ms next delay is posted. +// time, make sure a 16ms next delay is posted. TEST(DelayBasedTimeSource, NextDelaySaneWhenExactlyTwiceAfterRequestedTime) { scoped_refptr<base::TestSimpleTaskRunner> task_runner = new base::TestSimpleTaskRunner; @@ -131,7 +131,7 @@ TEST(DelayBasedTimeSource, NextDelaySaneWhenExactlyTwiceAfterRequestedTime) { FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); timer->SetClient(&client); timer->SetActive(true); - // Run the first tick. + // Run the first task, as that activates the timer and picks up a timebase. task_runner->RunPendingTasks(); EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); @@ -139,7 +139,7 @@ TEST(DelayBasedTimeSource, NextDelaySaneWhenExactlyTwiceAfterRequestedTime) { timer->SetNow(timer->Now() + 2 * Interval()); task_runner->RunPendingTasks(); - EXPECT_EQ(0, task_runner->NextPendingTaskDelay().InMilliseconds()); + EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); } // At 60Hz, when the tick returns at 2*interval and a bit after the requested @@ -152,7 +152,7 @@ TEST(DelayBasedTimeSource, NextDelaySaneWhenSlightlyAfterTwiceRequestedTime) { FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); timer->SetClient(&client); timer->SetActive(true); - // Run the first tick. + // Run the first task, as that activates the timer and picks up a timebase. task_runner->RunPendingTasks(); EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); @@ -174,7 +174,7 @@ TEST(DelayBasedTimeSource, NextDelaySaneWhenHalfAfterRequestedTime) { FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); timer->SetClient(&client); timer->SetActive(true); - // Run the first tick. + // Run the first task, as that activates the timer and picks up a timebase. task_runner->RunPendingTasks(); EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); @@ -196,7 +196,7 @@ TEST(DelayBasedTimeSource, SaneHandlingOfJitteryTimebase) { FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); timer->SetClient(&client); timer->SetActive(true); - // Run the first tick. + // Run the first task, as that activates the timer and picks up a timebase. task_runner->RunPendingTasks(); EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); @@ -227,7 +227,7 @@ TEST(DelayBasedTimeSource, HandlesSignificantTimebaseChangesImmediately) { FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); timer->SetClient(&client); timer->SetActive(true); - // Run the first tick. + // Run the first task, as that activates the timer and picks up a timebase. task_runner->RunPendingTasks(); EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); @@ -246,10 +246,10 @@ TEST(DelayBasedTimeSource, HandlesSignificantTimebaseChangesImmediately) { timer->SetTimebaseAndInterval(timer->Now() + jitter, Interval()); EXPECT_FALSE(client.TickCalled()); // Make sure pending tasks were canceled. - EXPECT_EQ(16 + 7, task_runner->NextPendingTaskDelay().InMilliseconds()); + EXPECT_EQ(7, task_runner->NextPendingTaskDelay().InMilliseconds()); // Tick, then shift timebase by -7ms. - timer->SetNow(timer->Now() + Interval() + jitter); + timer->SetNow(timer->Now() + jitter); task_runner->RunPendingTasks(); EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); @@ -271,7 +271,7 @@ TEST(DelayBasedTimeSource, HanldlesSignificantIntervalChangesImmediately) { FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); timer->SetClient(&client); timer->SetActive(true); - // Run the first tick. + // Run the first task, as that activates the timer and picks up a timebase. task_runner->RunPendingTasks(); EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); @@ -305,115 +305,6 @@ TEST(DelayBasedTimeSource, HanldlesSignificantIntervalChangesImmediately) { EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); } -TEST(DelayBasedTimeSource, JitteryRuntimeWithFutureTimebases) { - scoped_refptr<base::TestSimpleTaskRunner> task_runner = - new base::TestSimpleTaskRunner; - FakeTimeSourceClient client; - scoped_refptr<FakeDelayBasedTimeSource> timer = - FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); - timer->SetClient(&client); - timer->SetActive(true); - - // Run the first tick. - task_runner->RunPendingTasks(); - EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); - - base::TimeTicks future_timebase = timer->Now() + Interval() * 10; - - // 1ms jitter - base::TimeDelta jitter1 = base::TimeDelta::FromMilliseconds(1); - - // Tick with +1ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() + jitter1); - task_runner->RunPendingTasks(); - EXPECT_EQ(15, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // Tick with 0ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() - jitter1); - task_runner->RunPendingTasks(); - EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // Tick with -1ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() - jitter1); - task_runner->RunPendingTasks(); - EXPECT_EQ(17, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // Tick with 0ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() + jitter1); - task_runner->RunPendingTasks(); - EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // 8 ms jitter - base::TimeDelta jitter8 = base::TimeDelta::FromMilliseconds(8); - - // Tick with +8ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() + jitter8); - task_runner->RunPendingTasks(); - EXPECT_EQ(8, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // Tick with 0ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() - jitter8); - task_runner->RunPendingTasks(); - EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // Tick with -8ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() - jitter8); - task_runner->RunPendingTasks(); - EXPECT_EQ(24, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // Tick with 0ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() + jitter8); - task_runner->RunPendingTasks(); - EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // 15 ms jitter - base::TimeDelta jitter15 = base::TimeDelta::FromMilliseconds(15); - - // Tick with +15ms jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() + jitter15); - task_runner->RunPendingTasks(); - EXPECT_EQ(1, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // Tick with 0ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() - jitter15); - task_runner->RunPendingTasks(); - EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // Tick with -15ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() - jitter15); - task_runner->RunPendingTasks(); - EXPECT_EQ(31, task_runner->NextPendingTaskDelay().InMilliseconds()); - - // Tick with 0ms of jitter - future_timebase += Interval(); - timer->SetTimebaseAndInterval(future_timebase, Interval()); - timer->SetNow(timer->Now() + Interval() + jitter15); - task_runner->RunPendingTasks(); - EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); -} - TEST(DelayBasedTimeSourceTest, AchievesTargetRateWithNoNoise) { int num_iterations = 10; |