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Unified Diff: cc/scheduler/delay_based_time_source_unittest.cc

Issue 1533773002: Delete CC. (Closed) Base URL: git@github.com:domokit/mojo.git@cl-2e
Patch Set: rebase Created 5 years ago
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Index: cc/scheduler/delay_based_time_source_unittest.cc
diff --git a/cc/scheduler/delay_based_time_source_unittest.cc b/cc/scheduler/delay_based_time_source_unittest.cc
deleted file mode 100644
index f721b11ff7f3a9efee2f988faa930edbcb23d3fb..0000000000000000000000000000000000000000
--- a/cc/scheduler/delay_based_time_source_unittest.cc
+++ /dev/null
@@ -1,528 +0,0 @@
-// Copyright 2011 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 "cc/scheduler/delay_based_time_source.h"
-
-#include "base/basictypes.h"
-#include "base/test/test_simple_task_runner.h"
-#include "cc/test/scheduler_test_common.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace cc {
-namespace {
-
-base::TimeDelta Interval() {
- return base::TimeDelta::FromMicroseconds(base::Time::kMicrosecondsPerSecond /
- 60);
-}
-
-TEST(DelayBasedTimeSourceTest, TaskPostedAndTickCalled) {
- 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);
- EXPECT_TRUE(timer->Active());
- EXPECT_TRUE(task_runner->HasPendingTask());
-
- timer->SetNow(timer->Now() + base::TimeDelta::FromMilliseconds(16));
- task_runner->RunPendingTasks();
- EXPECT_TRUE(timer->Active());
- EXPECT_TRUE(client.TickCalled());
-}
-
-TEST(DelayBasedTimeSourceTest, TickNotCalledWithTaskPosted) {
- 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);
- EXPECT_TRUE(task_runner->HasPendingTask());
- timer->SetActive(false);
- task_runner->RunPendingTasks();
- EXPECT_FALSE(client.TickCalled());
-}
-
-TEST(DelayBasedTimeSourceTest, StartTwiceEnqueuesOneTask) {
- 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);
- EXPECT_TRUE(task_runner->HasPendingTask());
- task_runner->ClearPendingTasks();
- timer->SetActive(true);
- EXPECT_FALSE(task_runner->HasPendingTask());
-}
-
-TEST(DelayBasedTimeSourceTest, StartWhenRunningDoesntTick) {
- 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);
- EXPECT_TRUE(task_runner->HasPendingTask());
- task_runner->RunPendingTasks();
- task_runner->ClearPendingTasks();
- timer->SetActive(true);
- EXPECT_FALSE(task_runner->HasPendingTask());
-}
-
-// At 60Hz, when the tick returns at exactly the requested next time, make sure
-// a 16ms next delay is posted.
-TEST(DelayBasedTimeSourceTest, NextDelaySaneWhenExactlyOnRequestedTime) {
- 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());
-
- timer->SetNow(timer->Now() + Interval());
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-// At 60Hz, when the tick returns at slightly after the requested next time,
-// make sure a 16ms next delay is posted.
-TEST(DelayBasedTimeSourceTest, NextDelaySaneWhenSlightlyAfterRequestedTime) {
- 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());
-
- timer->SetNow(timer->Now() + Interval() +
- base::TimeDelta::FromMicroseconds(1));
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-// At 60Hz, when the tick returns at exactly 2*interval after the requested next
-// time, make sure a 0ms next delay is posted.
-TEST(DelayBasedTimeSourceTest,
- NextDelaySaneWhenExactlyTwiceAfterRequestedTime) {
- 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());
-
- timer->SetNow(timer->Now() + 2 * Interval());
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(0, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-// At 60Hz, when the tick returns at 2*interval and a bit after the requested
-// next time, make sure a 16ms next delay is posted.
-TEST(DelayBasedTimeSourceTest,
- NextDelaySaneWhenSlightlyAfterTwiceRequestedTime) {
- 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());
-
- timer->SetNow(timer->Now() + 2 * Interval() +
- base::TimeDelta::FromMicroseconds(1));
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-// At 60Hz, when the tick returns halfway to the next frame time, make sure
-// a correct next delay value is posted.
-TEST(DelayBasedTimeSourceTest, NextDelaySaneWhenHalfAfterRequestedTime) {
- 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());
-
- timer->SetNow(timer->Now() + Interval() +
- base::TimeDelta::FromMilliseconds(8));
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(8, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-// If the timebase and interval are updated with a jittery source, we want to
-// make sure we do not double tick.
-TEST(DelayBasedTimeSourceTest, SaneHandlingOfJitteryTimebase) {
- 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());
-
- // Jitter timebase ~1ms late
- timer->SetNow(timer->Now() + Interval());
- timer->SetTimebaseAndInterval(
- timer->Now() + base::TimeDelta::FromMilliseconds(1), Interval());
- task_runner->RunPendingTasks();
-
- // Without double tick prevention, NextPendingTaskDelay would be 1.
- EXPECT_EQ(17, task_runner->NextPendingTaskDelay().InMilliseconds());
-
- // Jitter timebase ~1ms early
- timer->SetNow(timer->Now() + Interval());
- timer->SetTimebaseAndInterval(
- timer->Now() - base::TimeDelta::FromMilliseconds(1), Interval());
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(15, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-TEST(DelayBasedTimeSourceTest, HandlesSignificantTimebaseChangesImmediately) {
- 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());
-
- // Tick, then shift timebase by +7ms.
- timer->SetNow(timer->Now() + Interval());
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds());
-
- client.Reset();
- task_runner->ClearPendingTasks();
- task_runner->RunPendingTasks();
- base::TimeDelta jitter = base::TimeDelta::FromMilliseconds(7) +
- base::TimeDelta::FromMicroseconds(1);
- timer->SetTimebaseAndInterval(timer->Now() + jitter, Interval());
-
- EXPECT_FALSE(client.TickCalled()); // Make sure pending tasks were canceled.
- EXPECT_EQ(16 + 7, task_runner->NextPendingTaskDelay().InMilliseconds());
-
- // Tick, then shift timebase by -7ms.
- timer->SetNow(timer->Now() + Interval() + jitter);
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds());
-
- client.Reset();
- task_runner->ClearPendingTasks();
- task_runner->RunPendingTasks();
- timer->SetTimebaseAndInterval(base::TimeTicks() + Interval(), Interval());
-
- EXPECT_FALSE(client.TickCalled()); // Make sure pending tasks were canceled.
- EXPECT_EQ(16 - 7, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-TEST(DelayBasedTimeSourceTest, HanldlesSignificantIntervalChangesImmediately) {
- 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());
-
- // Tick, then double the interval.
- timer->SetNow(timer->Now() + Interval());
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds());
-
- client.Reset();
- task_runner->ClearPendingTasks();
- task_runner->RunPendingTasks();
- timer->SetTimebaseAndInterval(base::TimeTicks() + Interval(), Interval() * 2);
-
- EXPECT_FALSE(client.TickCalled()); // Make sure pending tasks were canceled.
- EXPECT_EQ(33, task_runner->NextPendingTaskDelay().InMilliseconds());
-
- // Tick, then halve the interval.
- timer->SetNow(timer->Now() + Interval() * 2);
- task_runner->RunPendingTasks();
-
- EXPECT_EQ(33, task_runner->NextPendingTaskDelay().InMilliseconds());
-
- client.Reset();
- task_runner->ClearPendingTasks();
- task_runner->RunPendingTasks();
- timer->SetTimebaseAndInterval(base::TimeTicks() + Interval() * 3, Interval());
-
- EXPECT_FALSE(client.TickCalled()); // Make sure pending tasks were canceled.
- EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-TEST(DelayBasedTimeSourceTest, 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;
-
- 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);
-
- double total_frame_time = 0.0;
- for (int i = 0; i < num_iterations; ++i) {
- int64 delay_ms = task_runner->NextPendingTaskDelay().InMilliseconds();
-
- // accumulate the "delay"
- total_frame_time += delay_ms / 1000.0;
-
- // Run the callback exactly when asked
- timer->SetNow(timer->Now() + base::TimeDelta::FromMilliseconds(delay_ms));
- task_runner->RunPendingTasks();
- }
- double average_interval =
- total_frame_time / static_cast<double>(num_iterations);
- EXPECT_NEAR(1.0 / 60.0, average_interval, 0.1);
-}
-
-TEST(DelayBasedTimeSourceTest, TestDeactivateWhilePending) {
- 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); // Should post a task.
- timer->SetActive(false);
- timer = NULL;
- // Should run the posted task without crashing.
- EXPECT_TRUE(task_runner->HasPendingTask());
- task_runner->RunPendingTasks();
-}
-
-TEST(DelayBasedTimeSourceTest, TestDeactivateAndReactivateBeforeNextTickTime) {
- scoped_refptr<base::TestSimpleTaskRunner> task_runner =
- new base::TestSimpleTaskRunner;
- FakeTimeSourceClient client;
- scoped_refptr<FakeDelayBasedTimeSource> timer =
- FakeDelayBasedTimeSource::Create(Interval(), task_runner.get());
- timer->SetClient(&client);
-
- // Should run the activate task, and pick up a new timebase.
- timer->SetActive(true);
- task_runner->RunPendingTasks();
-
- // Stop the timer
- timer->SetActive(false);
-
- // Task will be pending anyway, run it
- task_runner->RunPendingTasks();
-
- // Start the timer again, but before the next tick time the timer previously
- // planned on using. That same tick time should still be targeted.
- timer->SetNow(timer->Now() + base::TimeDelta::FromMilliseconds(4));
- timer->SetActive(true);
- EXPECT_EQ(12, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-TEST(DelayBasedTimeSourceTest, TestDeactivateAndReactivateAfterNextTickTime) {
- scoped_refptr<base::TestSimpleTaskRunner> task_runner =
- new base::TestSimpleTaskRunner;
- FakeTimeSourceClient client;
- scoped_refptr<FakeDelayBasedTimeSource> timer =
- FakeDelayBasedTimeSource::Create(Interval(), task_runner.get());
- timer->SetClient(&client);
-
- // Should run the activate task, and pick up a new timebase.
- timer->SetActive(true);
- task_runner->RunPendingTasks();
-
- // Stop the timer.
- timer->SetActive(false);
-
- // Task will be pending anyway, run it.
- task_runner->RunPendingTasks();
-
- // Start the timer again, but before the next tick time the timer previously
- // planned on using. That same tick time should still be targeted.
- timer->SetNow(timer->Now() + base::TimeDelta::FromMilliseconds(20));
- timer->SetActive(true);
- EXPECT_EQ(13, task_runner->NextPendingTaskDelay().InMilliseconds());
-}
-
-TEST(DelayBasedTimeSourceTest, TestReturnValueWhenTimerIsDeActivated) {
- 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);
- task_runner->RunPendingTasks();
-
- // SetActive should return empty TimeTicks when the timer is deactivated.
- base::TimeTicks missed_tick_time = timer->SetActive(false);
- EXPECT_TRUE(missed_tick_time.is_null());
-}
-
-} // namespace
-} // namespace cc
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