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cc/CCDelayBasedTimeSourceTest.cpp

Index: cc/CCDelayBasedTimeSourceTest.cpp
diff --git a/cc/CCDelayBasedTimeSourceTest.cpp b/cc/CCDelayBasedTimeSourceTest.cpp
deleted file mode 100644
index 1819123fae16681f28fdeaa12f1018be4426118b..0000000000000000000000000000000000000000
--- a/cc/CCDelayBasedTimeSourceTest.cpp
+++ /dev/null
@@ -1,379 +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 "config.h"
-
-#include "CCDelayBasedTimeSource.h"
-
-#include "CCSchedulerTestCommon.h"
-#include "CCThread.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include <wtf/RefPtr.h>
-
-using namespace cc;
-using namespace WTF;
-using namespace WebKitTests;
-
-namespace {
-
-base::TimeDelta interval()
-{
-    return base::TimeDelta::FromMicroseconds(base::Time::kMicrosecondsPerSecond / 60);
-}
-
-TEST(CCDelayBasedTimeSourceTest, TaskPostedAndTickCalled)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-
-    timer->setActive(true);
-    EXPECT_TRUE(timer->active());
-    EXPECT_TRUE(thread.hasPendingTask());
-
-    timer->setNow(timer->now() + base::TimeDelta::FromMilliseconds(16));
-    thread.runPendingTask();
-    EXPECT_TRUE(timer->active());
-    EXPECT_TRUE(client.tickCalled());
-}
-
-TEST(CCDelayBasedTimeSource, TickNotCalledWithTaskPosted)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    EXPECT_TRUE(thread.hasPendingTask());
-    timer->setActive(false);
-    thread.runPendingTask();
-    EXPECT_FALSE(client.tickCalled());
-}
-
-TEST(CCDelayBasedTimeSource, StartTwiceEnqueuesOneTask)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    EXPECT_TRUE(thread.hasPendingTask());
-    thread.reset();
-    timer->setActive(true);
-    EXPECT_FALSE(thread.hasPendingTask());
-}
-
-TEST(CCDelayBasedTimeSource, StartWhenRunningDoesntTick)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    thread.runPendingTask();
-    thread.reset();
-    timer->setActive(true);
-    EXPECT_FALSE(thread.hasPendingTask());
-}
-
-// At 60Hz, when the tick returns at exactly the requested next time, make sure
-// a 16ms next delay is posted.
-TEST(CCDelayBasedTimeSource, NextDelaySaneWhenExactlyOnRequestedTime)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    // Run the first task, as that activates the timer and picks up a timebase.
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    timer->setNow(timer->now() + interval());
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-}
-
-// At 60Hz, when the tick returns at slightly after the requested next time, make sure
-// a 16ms next delay is posted.
-TEST(CCDelayBasedTimeSource, NextDelaySaneWhenSlightlyAfterRequestedTime)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    // Run the first task, as that activates the timer and picks up a timebase.
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    timer->setNow(timer->now() + interval() + base::TimeDelta::FromMicroseconds(1));
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-}
-
-// At 60Hz, when the tick returns at exactly 2*interval after the requested next time, make sure
-// a 16ms next delay is posted.
-TEST(CCDelayBasedTimeSource, NextDelaySaneWhenExactlyTwiceAfterRequestedTime)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    // Run the first task, as that activates the timer and picks up a timebase.
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    timer->setNow(timer->now() + 2 * interval());
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-}
-
-// 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(CCDelayBasedTimeSource, NextDelaySaneWhenSlightlyAfterTwiceRequestedTime)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    // Run the first task, as that activates the timer and picks up a timebase.
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    timer->setNow(timer->now() + 2 * interval() + base::TimeDelta::FromMicroseconds(1));
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-}
-
-// At 60Hz, when the tick returns halfway to the next frame time, make sure
-// a correct next delay value is posted.
-TEST(CCDelayBasedTimeSource, NextDelaySaneWhenHalfAfterRequestedTime)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    // Run the first task, as that activates the timer and picks up a timebase.
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    timer->setNow(timer->now() + interval() + base::TimeDelta::FromMilliseconds(8));
-    thread.runPendingTask();
-
-    EXPECT_EQ(8, thread.pendingDelayMs());
-}
-
-// If the timebase and interval are updated with a jittery source, we want to
-// make sure we do not double tick.
-TEST(CCDelayBasedTimeSource, SaneHandlingOfJitteryTimebase)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    // Run the first task, as that activates the timer and picks up a timebase.
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    // Jitter timebase ~1ms late
-    timer->setNow(timer->now() + interval());
-    timer->setTimebaseAndInterval(timer->now() + base::TimeDelta::FromMilliseconds(1), interval());
-    thread.runPendingTask();
-
-    // Without double tick prevention, pendingDelayMs would be 1.
-    EXPECT_EQ(17, thread.pendingDelayMs());
-
-    // Jitter timebase ~1ms early
-    timer->setNow(timer->now() + interval());
-    timer->setTimebaseAndInterval(timer->now() - base::TimeDelta::FromMilliseconds(1), interval());
-    thread.runPendingTask();
-
-    EXPECT_EQ(15, thread.pendingDelayMs());
-}
-
-TEST(CCDelayBasedTimeSource, HandlesSignificantTimebaseChangesImmediately)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    // Run the first task, as that activates the timer and picks up a timebase.
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    // Tick, then shift timebase by +7ms.
-    timer->setNow(timer->now() + interval());
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    client.reset();
-    thread.runPendingTaskOnOverwrite(true);
-    base::TimeDelta jitter = base::TimeDelta::FromMilliseconds(7) + base::TimeDelta::FromMicroseconds(1);
-    timer->setTimebaseAndInterval(timer->now() + jitter, interval());
-    thread.runPendingTaskOnOverwrite(false);
-
-    EXPECT_FALSE(client.tickCalled()); // Make sure pending tasks were canceled.
-    EXPECT_EQ(7, thread.pendingDelayMs());
-
-    // Tick, then shift timebase by -7ms.
-    timer->setNow(timer->now() + jitter);
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    client.reset();
-    thread.runPendingTaskOnOverwrite(true);
-    timer->setTimebaseAndInterval(base::TimeTicks() + interval(), interval());
-    thread.runPendingTaskOnOverwrite(false);
-
-    EXPECT_FALSE(client.tickCalled()); // Make sure pending tasks were canceled.
-    EXPECT_EQ(16-7, thread.pendingDelayMs());
-}
-
-TEST(CCDelayBasedTimeSource, HanldlesSignificantIntervalChangesImmediately)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-    // Run the first task, as that activates the timer and picks up a timebase.
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    // Tick, then double the interval.
-    timer->setNow(timer->now() + interval());
-    thread.runPendingTask();
-
-    EXPECT_EQ(16, thread.pendingDelayMs());
-
-    client.reset();
-    thread.runPendingTaskOnOverwrite(true);
-    timer->setTimebaseAndInterval(base::TimeTicks() + interval(), interval() * 2);
-    thread.runPendingTaskOnOverwrite(false);
-
-    EXPECT_FALSE(client.tickCalled()); // Make sure pending tasks were canceled.
-    EXPECT_EQ(33, thread.pendingDelayMs());
-
-    // Tick, then halve the interval.
-    timer->setNow(timer->now() + interval() * 2);
-    thread.runPendingTask();
-
-    EXPECT_EQ(33, thread.pendingDelayMs());
-
-    client.reset();
-    thread.runPendingTaskOnOverwrite(true);
-    timer->setTimebaseAndInterval(base::TimeTicks() + interval() * 3, interval());
-    thread.runPendingTaskOnOverwrite(false);
-
-    EXPECT_FALSE(client.tickCalled()); // Make sure pending tasks were canceled.
-    EXPECT_EQ(16, thread.pendingDelayMs());
-}
-
-TEST(CCDelayBasedTimeSourceTest, AchievesTargetRateWithNoNoise)
-{
-    int numIterations = 10;
-
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true);
-
-    double totalFrameTime = 0;
-    for (int i = 0; i < numIterations; ++i) {
-        long long delayMs = thread.pendingDelayMs();
-
-        // accumulate the "delay"
-        totalFrameTime += delayMs / 1000.0;
-
-        // Run the callback exactly when asked
-        timer->setNow(timer->now() + base::TimeDelta::FromMilliseconds(delayMs));
-        thread.runPendingTask();
-    }
-    double averageInterval = totalFrameTime / static_cast<double>(numIterations);
-    EXPECT_NEAR(1.0 / 60.0, averageInterval, 0.1);
-}
-
-TEST(CCDelayBasedTimeSource, TestDeactivateWhilePending)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-    timer->setActive(true); // Should post a task.
-    timer->setActive(false);
-    timer.clear();
-    thread.runPendingTask(); // Should run the posted task without crashing.
-}
-
-TEST(CCDelayBasedTimeSource, TestDeactivateAndReactivateBeforeNextTickTime)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-
-    // Should run the activate task, and pick up a new timebase.
-    timer->setActive(true);
-    thread.runPendingTask();
-
-    // Stop the timer
-    timer->setActive(false);
-
-    // Task will be pending anyway, run it
-    thread.runPendingTask();
-
-    // 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, thread.pendingDelayMs());
-}
-
-TEST(CCDelayBasedTimeSource, TestDeactivateAndReactivateAfterNextTickTime)
-{
-    FakeCCThread thread;
-    FakeCCTimeSourceClient client;
-    RefPtr<FakeCCDelayBasedTimeSource> timer = FakeCCDelayBasedTimeSource::create(interval(), &thread);
-    timer->setClient(&client);
-
-    // Should run the activate task, and pick up a new timebase.
-    timer->setActive(true);
-    thread.runPendingTask();
-
-    // Stop the timer
-    timer->setActive(false);
-
-    // Task will be pending anyway, run it
-    thread.runPendingTask();
-
-    // 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, thread.pendingDelayMs());
-}
-
-}