Web Animations: Rename TimedItem to AnimationSource

Source/core/animation/AnimationSourceTest.cpp

Index: Source/core/animation/AnimationSourceTest.cpp
diff --git a/Source/core/animation/AnimationSourceTest.cpp b/Source/core/animation/AnimationSourceTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..a314cad4be1fcf459f00e726b8cb6887c1a42405
--- /dev/null
+++ b/Source/core/animation/AnimationSourceTest.cpp
@@ -0,0 +1,775 @@
+/*
+ * Copyright (c) 2013, Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "core/animation/AnimationSource.h"
+
+#include <gtest/gtest.h>
+
+using namespace WebCore;
+
+namespace {
+
+class TestAnimationSourceEventDelegate : public AnimationSource::EventDelegate {
+public:
+    virtual void onEventCondition(const AnimationSource* animationSource) OVERRIDE
+    {
+        m_eventTriggered = true;
+
+    }
+    void reset()
+    {
+        m_eventTriggered = false;
+    }
+    bool eventTriggered() { return m_eventTriggered; }
+
+private:
+    bool m_eventTriggered;
+};
+
+class TestAnimationSource : public AnimationSource {
+public:
+    static PassRefPtrWillBeRawPtr<TestAnimationSource> create(const Timing& specified)
+    {
+        return adoptRefWillBeNoop(new TestAnimationSource(specified, new TestAnimationSourceEventDelegate()));
+    }
+
+    void updateInheritedTime(double time)
+    {
+        updateInheritedTime(time, TimingUpdateForAnimationFrame);
+    }
+
+    void updateInheritedTime(double time, TimingUpdateReason reason)
+    {
+        m_eventDelegate->reset();
+        AnimationSource::updateInheritedTime(time, reason);
+    }
+
+    virtual void updateChildrenAndEffects() const OVERRIDE { }
+    void willDetach() { }
+    TestAnimationSourceEventDelegate* eventDelegate() { return m_eventDelegate; }
+    virtual double calculateTimeToEffectChange(bool forwards, double localTime, double timeToNextIteration) const OVERRIDE
+    {
+        m_localTime = localTime;
+        m_timeToNextIteration = timeToNextIteration;
+        return -1;
+    }
+    double takeLocalTime()
+    {
+        const double result = m_localTime;
+        m_localTime = nullValue();
+        return result;
+    }
+
+    double takeTimeToNextIteration()
+    {
+        const double result = m_timeToNextIteration;
+        m_timeToNextIteration = nullValue();
+        return result;
+    }
+
+private:
+    TestAnimationSource(const Timing& specified, TestAnimationSourceEventDelegate* eventDelegate)
+        : AnimationSource(specified, adoptPtr(eventDelegate))
+        , m_eventDelegate(eventDelegate)
+    {
+    }
+
+    TestAnimationSourceEventDelegate* m_eventDelegate;
+    mutable double m_localTime;
+    mutable double m_timeToNextIteration;
+};
+
+TEST(AnimationAnimationSourceTest, Sanity)
+{
+    Timing timing;
+    timing.iterationDuration = 2;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    EXPECT_EQ(0, animationSource->startTime());
+
+    animationSource->updateInheritedTime(0);
+
+    EXPECT_EQ(AnimationSource::PhaseActive, animationSource->phase());
+    EXPECT_TRUE(animationSource->isInPlay());
+    EXPECT_TRUE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->startTime());
+    EXPECT_EQ(2, animationSource->activeDurationInternal());
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+
+    EXPECT_EQ(AnimationSource::PhaseActive, animationSource->phase());
+    EXPECT_TRUE(animationSource->isInPlay());
+    EXPECT_TRUE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->startTime());
+    EXPECT_EQ(2, animationSource->activeDurationInternal());
+    EXPECT_EQ(0.5, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(2);
+
+    EXPECT_EQ(AnimationSource::PhaseAfter, animationSource->phase());
+    EXPECT_FALSE(animationSource->isInPlay());
+    EXPECT_FALSE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->startTime());
+    EXPECT_EQ(2, animationSource->activeDurationInternal());
+    EXPECT_EQ(1, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(3);
+
+    EXPECT_EQ(AnimationSource::PhaseAfter, animationSource->phase());
+    EXPECT_FALSE(animationSource->isInPlay());
+    EXPECT_FALSE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->startTime());
+    EXPECT_EQ(2, animationSource->activeDurationInternal());
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, FillAuto)
+{
+    Timing timing;
+    timing.iterationDuration = 1;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(2);
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, FillForwards)
+{
+    Timing timing;
+    timing.iterationDuration = 1;
+    timing.fillMode = Timing::FillModeForwards;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(2);
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, FillBackwards)
+{
+    Timing timing;
+    timing.iterationDuration = 1;
+    timing.fillMode = Timing::FillModeBackwards;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(2);
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+}
+
+TEST(AnimationAnimationSourceTest, FillBoth)
+{
+    Timing timing;
+    timing.iterationDuration = 1;
+    timing.fillMode = Timing::FillModeBoth;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(2);
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, StartDelay)
+{
+    Timing timing;
+    timing.iterationDuration = 1;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.startDelay = 0.5;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(0.5);
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1.5);
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, ZeroIteration)
+{
+    Timing timing;
+    timing.iterationDuration = 1;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.iterationCount = 0;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_EQ(0, animationSource->activeDurationInternal());
+    EXPECT_TRUE(isNull(animationSource->currentIteration()));
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(0, animationSource->activeDurationInternal());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, InfiniteIteration)
+{
+    Timing timing;
+    timing.iterationDuration = 1;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.iterationCount = std::numeric_limits<double>::infinity();
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_TRUE(isNull(animationSource->currentIteration()));
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationSource->activeDurationInternal());
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, Iteration)
+{
+    Timing timing;
+    timing.iterationCount = 2;
+    timing.iterationDuration = 2;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0.5, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(2);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(2);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(5);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, IterationStart)
+{
+    Timing timing;
+    timing.iterationStart = 1.2;
+    timing.iterationCount = 2.2;
+    timing.iterationDuration = 1;
+    timing.fillMode = Timing::FillModeBoth;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_NEAR(0.2, animationSource->timeFraction(), 0.000000000000001);
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_NEAR(0.2, animationSource->timeFraction(), 0.000000000000001);
+
+    animationSource->updateInheritedTime(10);
+    EXPECT_EQ(3, animationSource->currentIteration());
+    EXPECT_NEAR(0.4, animationSource->timeFraction(), 0.000000000000001);
+}
+
+TEST(AnimationAnimationSourceTest, IterationAlternate)
+{
+    Timing timing;
+    timing.iterationCount = 10;
+    timing.iterationDuration = 1;
+    timing.direction = Timing::PlaybackDirectionAlternate;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(0.75);
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0.75, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1.75);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(0.25, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(2.75);
+    EXPECT_EQ(2, animationSource->currentIteration());
+    EXPECT_EQ(0.75, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, IterationAlternateReverse)
+{
+    Timing timing;
+    timing.iterationCount = 10;
+    timing.iterationDuration = 1;
+    timing.direction = Timing::PlaybackDirectionAlternateReverse;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(0.75);
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0.25, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1.75);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(0.75, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(2.75);
+    EXPECT_EQ(2, animationSource->currentIteration());
+    EXPECT_EQ(0.25, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationSanity)
+{
+    Timing timing;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    EXPECT_EQ(0, animationSource->startTime());
+
+    animationSource->updateInheritedTime(0);
+
+    EXPECT_EQ(AnimationSource::PhaseAfter, animationSource->phase());
+    EXPECT_FALSE(animationSource->isInPlay());
+    EXPECT_FALSE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->startTime());
+    EXPECT_EQ(0, animationSource->activeDurationInternal());
+    EXPECT_EQ(1, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+
+    EXPECT_EQ(AnimationSource::PhaseAfter, animationSource->phase());
+    EXPECT_FALSE(animationSource->isInPlay());
+    EXPECT_FALSE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->startTime());
+    EXPECT_EQ(0, animationSource->activeDurationInternal());
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationFillForwards)
+{
+    Timing timing;
+    timing.fillMode = Timing::FillModeForwards;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(1, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationFillBackwards)
+{
+    Timing timing;
+    timing.fillMode = Timing::FillModeBackwards;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(1);
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationFillBoth)
+{
+    Timing timing;
+    timing.fillMode = Timing::FillModeBoth;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(1, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationStartDelay)
+{
+    Timing timing;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.startDelay = 0.5;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(0.5);
+    EXPECT_EQ(1, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1.5);
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationIterationStartAndCount)
+{
+    Timing timing;
+    timing.iterationStart = 0.1;
+    timing.iterationCount = 0.2;
+    timing.fillMode = Timing::FillModeBoth;
+    timing.startDelay = 0.3;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(0.1, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(0.3);
+    EXPECT_DOUBLE_EQ(0.3, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+    EXPECT_DOUBLE_EQ(0.3, animationSource->timeFraction());
+}
+
+// FIXME: Needs specification work.
+TEST(AnimationAnimationSourceTest, ZeroDurationInfiniteIteration)
+{
+    Timing timing;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.iterationCount = std::numeric_limits<double>::infinity();
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_EQ(0, animationSource->activeDurationInternal());
+    EXPECT_TRUE(isNull(animationSource->currentIteration()));
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(0, animationSource->activeDurationInternal());
+    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationSource->currentIteration());
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationIteration)
+{
+    Timing timing;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.iterationCount = 2;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_TRUE(isNull(animationSource->currentIteration()));
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(1, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationIterationStart)
+{
+    Timing timing;
+    timing.iterationStart = 1.2;
+    timing.iterationCount = 2.2;
+    timing.fillMode = Timing::FillModeBoth;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_NEAR(0.2, animationSource->timeFraction(), 0.000000000000001);
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(3, animationSource->currentIteration());
+    EXPECT_NEAR(0.4, animationSource->timeFraction(), 0.000000000000001);
+
+    animationSource->updateInheritedTime(10);
+    EXPECT_EQ(3, animationSource->currentIteration());
+    EXPECT_NEAR(0.4, animationSource->timeFraction(), 0.000000000000001);
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationIterationAlternate)
+{
+    Timing timing;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.iterationCount = 2;
+    timing.direction = Timing::PlaybackDirectionAlternate;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_TRUE(isNull(animationSource->currentIteration()));
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, ZeroDurationIterationAlternateReverse)
+{
+    Timing timing;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.iterationCount = 2;
+    timing.direction = Timing::PlaybackDirectionAlternateReverse;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(-1);
+    EXPECT_TRUE(isNull(animationSource->currentIteration()));
+    EXPECT_TRUE(isNull(animationSource->timeFraction()));
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(1, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+    EXPECT_EQ(1, animationSource->currentIteration());
+    EXPECT_EQ(1, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, InfiniteDurationSanity)
+{
+    Timing timing;
+    timing.iterationDuration = std::numeric_limits<double>::infinity();
+    timing.iterationCount = 1;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    EXPECT_EQ(0, animationSource->startTime());
+
+    animationSource->updateInheritedTime(0);
+
+    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationSource->activeDurationInternal());
+    EXPECT_EQ(AnimationSource::PhaseActive, animationSource->phase());
+    EXPECT_TRUE(animationSource->isInPlay());
+    EXPECT_TRUE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+
+    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationSource->activeDurationInternal());
+    EXPECT_EQ(AnimationSource::PhaseActive, animationSource->phase());
+    EXPECT_TRUE(animationSource->isInPlay());
+    EXPECT_TRUE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+}
+
+// FIXME: Needs specification work.
+TEST(AnimationAnimationSourceTest, InfiniteDurationZeroIterations)
+{
+    Timing timing;
+    timing.iterationDuration = std::numeric_limits<double>::infinity();
+    timing.iterationCount = 0;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    EXPECT_EQ(0, animationSource->startTime());
+
+    animationSource->updateInheritedTime(0);
+
+    EXPECT_EQ(0, animationSource->activeDurationInternal());
+    EXPECT_EQ(AnimationSource::PhaseAfter, animationSource->phase());
+    EXPECT_FALSE(animationSource->isInPlay());
+    EXPECT_FALSE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+
+    EXPECT_EQ(AnimationSource::PhaseAfter, animationSource->phase());
+    EXPECT_EQ(AnimationSource::PhaseAfter, animationSource->phase());
+    EXPECT_FALSE(animationSource->isInPlay());
+    EXPECT_FALSE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, InfiniteDurationInfiniteIterations)
+{
+    Timing timing;
+    timing.iterationDuration = std::numeric_limits<double>::infinity();
+    timing.iterationCount = std::numeric_limits<double>::infinity();
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    EXPECT_EQ(0, animationSource->startTime());
+
+    animationSource->updateInheritedTime(0);
+
+    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationSource->activeDurationInternal());
+    EXPECT_EQ(AnimationSource::PhaseActive, animationSource->phase());
+    EXPECT_TRUE(animationSource->isInPlay());
+    EXPECT_TRUE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(1);
+
+    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationSource->activeDurationInternal());
+    EXPECT_EQ(AnimationSource::PhaseActive, animationSource->phase());
+    EXPECT_TRUE(animationSource->isInPlay());
+    EXPECT_TRUE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, InfiniteDurationZeroPlaybackRate)
+{
+    Timing timing;
+    timing.iterationDuration = std::numeric_limits<double>::infinity();
+    timing.playbackRate = 0;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    EXPECT_EQ(0, animationSource->startTime());
+
+    animationSource->updateInheritedTime(0);
+
+    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationSource->activeDurationInternal());
+    EXPECT_EQ(AnimationSource::PhaseActive, animationSource->phase());
+    EXPECT_TRUE(animationSource->isInPlay());
+    EXPECT_TRUE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+
+    animationSource->updateInheritedTime(std::numeric_limits<double>::infinity());
+
+    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationSource->activeDurationInternal());
+    EXPECT_EQ(AnimationSource::PhaseAfter, animationSource->phase());
+    EXPECT_FALSE(animationSource->isInPlay());
+    EXPECT_FALSE(animationSource->isCurrent());
+    EXPECT_TRUE(animationSource->isInEffect());
+    EXPECT_EQ(0, animationSource->currentIteration());
+    EXPECT_EQ(0, animationSource->timeFraction());
+}
+
+TEST(AnimationAnimationSourceTest, EndTime)
+{
+    Timing timing;
+    timing.startDelay = 1;
+    timing.endDelay = 2;
+    timing.iterationDuration = 4;
+    timing.iterationCount = 2;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+    EXPECT_EQ(11, animationSource->endTimeInternal());
+}
+
+TEST(AnimationAnimationSourceTest, Events)
+{
+    Timing timing;
+    timing.iterationDuration = 1;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.iterationCount = 2;
+    timing.startDelay = 1;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(0.0, TimingUpdateOnDemand);
+    EXPECT_FALSE(animationSource->eventDelegate()->eventTriggered());
+
+    animationSource->updateInheritedTime(0.0, TimingUpdateForAnimationFrame);
+    EXPECT_TRUE(animationSource->eventDelegate()->eventTriggered());
+
+    animationSource->updateInheritedTime(1.5, TimingUpdateOnDemand);
+    EXPECT_FALSE(animationSource->eventDelegate()->eventTriggered());
+
+    animationSource->updateInheritedTime(1.5, TimingUpdateForAnimationFrame);
+    EXPECT_TRUE(animationSource->eventDelegate()->eventTriggered());
+
+}
+
+TEST(AnimationAnimationSourceTest, TimeToEffectChange)
+{
+    Timing timing;
+    timing.iterationDuration = 1;
+    timing.fillMode = Timing::FillModeForwards;
+    timing.iterationStart = 0.2;
+    timing.iterationCount = 2.5;
+    timing.startDelay = 1;
+    timing.direction = Timing::PlaybackDirectionAlternate;
+    RefPtrWillBeRawPtr<TestAnimationSource> animationSource = TestAnimationSource::create(timing);
+
+    animationSource->updateInheritedTime(0);
+    EXPECT_EQ(0, animationSource->takeLocalTime());
+    EXPECT_TRUE(std::isinf(animationSource->takeTimeToNextIteration()));
+
+    // Normal iteration.
+    animationSource->updateInheritedTime(1.75);
+    EXPECT_EQ(1.75, animationSource->takeLocalTime());
+    EXPECT_NEAR(0.05, animationSource->takeTimeToNextIteration(), 0.000000000000001);
+
+    // Reverse iteration.
+    animationSource->updateInheritedTime(2.75);
+    EXPECT_EQ(2.75, animationSource->takeLocalTime());
+    EXPECT_NEAR(0.05, animationSource->takeTimeToNextIteration(), 0.000000000000001);
+
+    // Item ends before iteration finishes.
+    animationSource->updateInheritedTime(3.4);
+    EXPECT_EQ(AnimationSource::PhaseActive, animationSource->phase());
+    EXPECT_EQ(3.4, animationSource->takeLocalTime());
+    EXPECT_TRUE(std::isinf(animationSource->takeTimeToNextIteration()));
+
+    // Item has finished.
+    animationSource->updateInheritedTime(3.5);
+    EXPECT_EQ(AnimationSource::PhaseAfter, animationSource->phase());
+    EXPECT_EQ(3.5, animationSource->takeLocalTime());
+    EXPECT_TRUE(std::isinf(animationSource->takeTimeToNextIteration()));
+}
+
+}