third_party/WebKit/Source/core/animation/AnimationEffectTest.cpp

/*
 * Copyright (c) 2013, Google Inc. All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
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#include "config.h"
#include "core/animation/AnimationEffect.h"

#include "core/animation/ComputedTimingProperties.h"
#include <gtest/gtest.h>

namespace blink {

class TestAnimationEffectEventDelegate : public AnimationEffect::EventDelegate {
public:
    void onEventCondition(const AnimationEffect& animationNode) override
    {
        m_eventTriggered = true;

    }
    bool requiresIterationEvents(const AnimationEffect& animationNode) override
    {
        return true;
    }
    void reset()
    {
        m_eventTriggered = false;
    }
    bool eventTriggered() { return m_eventTriggered; }

private:
    bool m_eventTriggered;
};

class TestAnimationEffect : public AnimationEffect {
public:
    static TestAnimationEffect* create(const Timing& specified)
    {
        return new TestAnimationEffect(specified, new TestAnimationEffectEventDelegate());
    }

    void updateInheritedTime(double time)
    {
        updateInheritedTime(time, TimingUpdateForAnimationFrame);
    }

    void updateInheritedTime(double time, TimingUpdateReason reason)
    {
        m_eventDelegate->reset();
        AnimationEffect::updateInheritedTime(time, reason);
    }

    void updateChildrenAndEffects() const override { }
    void willDetach() { }
    TestAnimationEffectEventDelegate* eventDelegate() { return m_eventDelegate.get(); }
    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;
    }

    DEFINE_INLINE_VIRTUAL_TRACE()
    {
        visitor->trace(m_eventDelegate);
        AnimationEffect::trace(visitor);
    }

private:
    TestAnimationEffect(const Timing& specified, TestAnimationEffectEventDelegate* eventDelegate)
        : AnimationEffect(specified, eventDelegate)
        , m_eventDelegate(eventDelegate)
    {
    }

    Member<TestAnimationEffectEventDelegate> m_eventDelegate;
    mutable double m_localTime;
    mutable double m_timeToNextIteration;
};

TEST(AnimationAnimationEffectTest, Sanity)
{
    Timing timing;
    timing.iterationDuration = 2;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    EXPECT_EQ(0, animationNode->computedTiming().startTime());

    animationNode->updateInheritedTime(0);

    EXPECT_EQ(AnimationEffect::PhaseActive, animationNode->phase());
    EXPECT_TRUE(animationNode->isInPlay());
    EXPECT_TRUE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->computedTiming().startTime());
    EXPECT_EQ(2, animationNode->activeDurationInternal());
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);

    EXPECT_EQ(AnimationEffect::PhaseActive, animationNode->phase());
    EXPECT_TRUE(animationNode->isInPlay());
    EXPECT_TRUE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->computedTiming().startTime());
    EXPECT_EQ(2, animationNode->activeDurationInternal());
    EXPECT_EQ(0.5, animationNode->timeFraction());

    animationNode->updateInheritedTime(2);

    EXPECT_EQ(AnimationEffect::PhaseAfter, animationNode->phase());
    EXPECT_FALSE(animationNode->isInPlay());
    EXPECT_FALSE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->computedTiming().startTime());
    EXPECT_EQ(2, animationNode->activeDurationInternal());
    EXPECT_EQ(1, animationNode->timeFraction());

    animationNode->updateInheritedTime(3);

    EXPECT_EQ(AnimationEffect::PhaseAfter, animationNode->phase());
    EXPECT_FALSE(animationNode->isInPlay());
    EXPECT_FALSE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->computedTiming().startTime());
    EXPECT_EQ(2, animationNode->activeDurationInternal());
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, FillAuto)
{
    Timing timing;
    timing.iterationDuration = 1;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(2);
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, FillForwards)
{
    Timing timing;
    timing.iterationDuration = 1;
    timing.fillMode = Timing::FillModeForwards;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(2);
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, FillBackwards)
{
    Timing timing;
    timing.iterationDuration = 1;
    timing.fillMode = Timing::FillModeBackwards;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(2);
    EXPECT_TRUE(isNull(animationNode->timeFraction()));
}

TEST(AnimationAnimationEffectTest, FillBoth)
{
    Timing timing;
    timing.iterationDuration = 1;
    timing.fillMode = Timing::FillModeBoth;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(2);
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, StartDelay)
{
    Timing timing;
    timing.iterationDuration = 1;
    timing.fillMode = Timing::FillModeForwards;
    timing.startDelay = 0.5;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(0);
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(0.5);
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(1.5);
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, ZeroIteration)
{
    Timing timing;
    timing.iterationDuration = 1;
    timing.fillMode = Timing::FillModeForwards;
    timing.iterationCount = 0;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_EQ(0, animationNode->activeDurationInternal());
    EXPECT_TRUE(isNull(animationNode->currentIteration()));
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(0, animationNode->activeDurationInternal());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, InfiniteIteration)
{
    Timing timing;
    timing.iterationDuration = 1;
    timing.fillMode = Timing::FillModeForwards;
    timing.iterationCount = std::numeric_limits<double>::infinity();
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_TRUE(isNull(animationNode->currentIteration()));
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationNode->activeDurationInternal());

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, Iteration)
{
    Timing timing;
    timing.iterationCount = 2;
    timing.iterationDuration = 2;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0.5, animationNode->timeFraction());

    animationNode->updateInheritedTime(2);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(2);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(5);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, IterationStart)
{
    Timing timing;
    timing.iterationStart = 1.2;
    timing.iterationCount = 2.2;
    timing.iterationDuration = 1;
    timing.fillMode = Timing::FillModeBoth;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_NEAR(0.2, animationNode->timeFraction(), 0.000000000000001);

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_NEAR(0.2, animationNode->timeFraction(), 0.000000000000001);

    animationNode->updateInheritedTime(10);
    EXPECT_EQ(3, animationNode->currentIteration());
    EXPECT_NEAR(0.4, animationNode->timeFraction(), 0.000000000000001);
}

TEST(AnimationAnimationEffectTest, IterationAlternate)
{
    Timing timing;
    timing.iterationCount = 10;
    timing.iterationDuration = 1;
    timing.direction = Timing::PlaybackDirectionAlternate;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(0.75);
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0.75, animationNode->timeFraction());

    animationNode->updateInheritedTime(1.75);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(0.25, animationNode->timeFraction());

    animationNode->updateInheritedTime(2.75);
    EXPECT_EQ(2, animationNode->currentIteration());
    EXPECT_EQ(0.75, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, IterationAlternateReverse)
{
    Timing timing;
    timing.iterationCount = 10;
    timing.iterationDuration = 1;
    timing.direction = Timing::PlaybackDirectionAlternateReverse;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(0.75);
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0.25, animationNode->timeFraction());

    animationNode->updateInheritedTime(1.75);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(0.75, animationNode->timeFraction());

    animationNode->updateInheritedTime(2.75);
    EXPECT_EQ(2, animationNode->currentIteration());
    EXPECT_EQ(0.25, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, ZeroDurationSanity)
{
    Timing timing;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    EXPECT_EQ(0, animationNode->computedTiming().startTime());

    animationNode->updateInheritedTime(0);

    EXPECT_EQ(AnimationEffect::PhaseAfter, animationNode->phase());
    EXPECT_FALSE(animationNode->isInPlay());
    EXPECT_FALSE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->computedTiming().startTime());
    EXPECT_EQ(0, animationNode->activeDurationInternal());
    EXPECT_EQ(1, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);

    EXPECT_EQ(AnimationEffect::PhaseAfter, animationNode->phase());
    EXPECT_FALSE(animationNode->isInPlay());
    EXPECT_FALSE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->computedTiming().startTime());
    EXPECT_EQ(0, animationNode->activeDurationInternal());
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, ZeroDurationFillForwards)
{
    Timing timing;
    timing.fillMode = Timing::FillModeForwards;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(1, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, ZeroDurationFillBackwards)
{
    Timing timing;
    timing.fillMode = Timing::FillModeBackwards;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(0);
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(1);
    EXPECT_TRUE(isNull(animationNode->timeFraction()));
}

TEST(AnimationAnimationEffectTest, ZeroDurationFillBoth)
{
    Timing timing;
    timing.fillMode = Timing::FillModeBoth;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(1, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, ZeroDurationStartDelay)
{
    Timing timing;
    timing.fillMode = Timing::FillModeForwards;
    timing.startDelay = 0.5;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(0);
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(0.5);
    EXPECT_EQ(1, animationNode->timeFraction());

    animationNode->updateInheritedTime(1.5);
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, ZeroDurationIterationStartAndCount)
{
    Timing timing;
    timing.iterationStart = 0.1;
    timing.iterationCount = 0.2;
    timing.fillMode = Timing::FillModeBoth;
    timing.startDelay = 0.3;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(0.1, animationNode->timeFraction());

    animationNode->updateInheritedTime(0.3);
    EXPECT_DOUBLE_EQ(0.3, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);
    EXPECT_DOUBLE_EQ(0.3, animationNode->timeFraction());
}

// FIXME: Needs specification work.
TEST(AnimationAnimationEffectTest, ZeroDurationInfiniteIteration)
{
    Timing timing;
    timing.fillMode = Timing::FillModeForwards;
    timing.iterationCount = std::numeric_limits<double>::infinity();
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_EQ(0, animationNode->activeDurationInternal());
    EXPECT_TRUE(isNull(animationNode->currentIteration()));
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(0, animationNode->activeDurationInternal());
    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationNode->currentIteration());
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, ZeroDurationIteration)
{
    Timing timing;
    timing.fillMode = Timing::FillModeForwards;
    timing.iterationCount = 2;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_TRUE(isNull(animationNode->currentIteration()));
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(1, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, ZeroDurationIterationStart)
{
    Timing timing;
    timing.iterationStart = 1.2;
    timing.iterationCount = 2.2;
    timing.fillMode = Timing::FillModeBoth;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_NEAR(0.2, animationNode->timeFraction(), 0.000000000000001);

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(3, animationNode->currentIteration());
    EXPECT_NEAR(0.4, animationNode->timeFraction(), 0.000000000000001);

    animationNode->updateInheritedTime(10);
    EXPECT_EQ(3, animationNode->currentIteration());
    EXPECT_NEAR(0.4, animationNode->timeFraction(), 0.000000000000001);
}

TEST(AnimationAnimationEffectTest, ZeroDurationIterationAlternate)
{
    Timing timing;
    timing.fillMode = Timing::FillModeForwards;
    timing.iterationCount = 2;
    timing.direction = Timing::PlaybackDirectionAlternate;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_TRUE(isNull(animationNode->currentIteration()));
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, ZeroDurationIterationAlternateReverse)
{
    Timing timing;
    timing.fillMode = Timing::FillModeForwards;
    timing.iterationCount = 2;
    timing.direction = Timing::PlaybackDirectionAlternateReverse;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(-1);
    EXPECT_TRUE(isNull(animationNode->currentIteration()));
    EXPECT_TRUE(isNull(animationNode->timeFraction()));

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(1, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);
    EXPECT_EQ(1, animationNode->currentIteration());
    EXPECT_EQ(1, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, InfiniteDurationSanity)
{
    Timing timing;
    timing.iterationDuration = std::numeric_limits<double>::infinity();
    timing.iterationCount = 1;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    EXPECT_EQ(0, animationNode->computedTiming().startTime());

    animationNode->updateInheritedTime(0);

    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationNode->activeDurationInternal());
    EXPECT_EQ(AnimationEffect::PhaseActive, animationNode->phase());
    EXPECT_TRUE(animationNode->isInPlay());
    EXPECT_TRUE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);

    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationNode->activeDurationInternal());
    EXPECT_EQ(AnimationEffect::PhaseActive, animationNode->phase());
    EXPECT_TRUE(animationNode->isInPlay());
    EXPECT_TRUE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());
}

// FIXME: Needs specification work.
TEST(AnimationAnimationEffectTest, InfiniteDurationZeroIterations)
{
    Timing timing;
    timing.iterationDuration = std::numeric_limits<double>::infinity();
    timing.iterationCount = 0;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    EXPECT_EQ(0, animationNode->computedTiming().startTime());

    animationNode->updateInheritedTime(0);

    EXPECT_EQ(0, animationNode->activeDurationInternal());
    EXPECT_EQ(AnimationEffect::PhaseAfter, animationNode->phase());
    EXPECT_FALSE(animationNode->isInPlay());
    EXPECT_FALSE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);

    EXPECT_EQ(AnimationEffect::PhaseAfter, animationNode->phase());
    EXPECT_EQ(AnimationEffect::PhaseAfter, animationNode->phase());
    EXPECT_FALSE(animationNode->isInPlay());
    EXPECT_FALSE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, InfiniteDurationInfiniteIterations)
{
    Timing timing;
    timing.iterationDuration = std::numeric_limits<double>::infinity();
    timing.iterationCount = std::numeric_limits<double>::infinity();
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    EXPECT_EQ(0, animationNode->computedTiming().startTime());

    animationNode->updateInheritedTime(0);

    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationNode->activeDurationInternal());
    EXPECT_EQ(AnimationEffect::PhaseActive, animationNode->phase());
    EXPECT_TRUE(animationNode->isInPlay());
    EXPECT_TRUE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(1);

    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationNode->activeDurationInternal());
    EXPECT_EQ(AnimationEffect::PhaseActive, animationNode->phase());
    EXPECT_TRUE(animationNode->isInPlay());
    EXPECT_TRUE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, InfiniteDurationZeroPlaybackRate)
{
    Timing timing;
    timing.iterationDuration = std::numeric_limits<double>::infinity();
    timing.playbackRate = 0;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    EXPECT_EQ(0, animationNode->computedTiming().startTime());

    animationNode->updateInheritedTime(0);

    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationNode->activeDurationInternal());
    EXPECT_EQ(AnimationEffect::PhaseActive, animationNode->phase());
    EXPECT_TRUE(animationNode->isInPlay());
    EXPECT_TRUE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());

    animationNode->updateInheritedTime(std::numeric_limits<double>::infinity());

    EXPECT_EQ(std::numeric_limits<double>::infinity(), animationNode->activeDurationInternal());
    EXPECT_EQ(AnimationEffect::PhaseAfter, animationNode->phase());
    EXPECT_FALSE(animationNode->isInPlay());
    EXPECT_FALSE(animationNode->isCurrent());
    EXPECT_TRUE(animationNode->isInEffect());
    EXPECT_EQ(0, animationNode->currentIteration());
    EXPECT_EQ(0, animationNode->timeFraction());
}

TEST(AnimationAnimationEffectTest, EndTime)
{
    Timing timing;
    timing.startDelay = 1;
    timing.endDelay = 2;
    timing.iterationDuration = 4;
    timing.iterationCount = 2;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);
    EXPECT_EQ(11, animationNode->endTimeInternal());
}

TEST(AnimationAnimationEffectTest, Events)
{
    Timing timing;
    timing.iterationDuration = 1;
    timing.fillMode = Timing::FillModeForwards;
    timing.iterationCount = 2;
    timing.startDelay = 1;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(0.0, TimingUpdateOnDemand);
    EXPECT_FALSE(animationNode->eventDelegate()->eventTriggered());

    animationNode->updateInheritedTime(0.0, TimingUpdateForAnimationFrame);
    EXPECT_TRUE(animationNode->eventDelegate()->eventTriggered());

    animationNode->updateInheritedTime(1.5, TimingUpdateOnDemand);
    EXPECT_FALSE(animationNode->eventDelegate()->eventTriggered());

    animationNode->updateInheritedTime(1.5, TimingUpdateForAnimationFrame);
    EXPECT_TRUE(animationNode->eventDelegate()->eventTriggered());

}

TEST(AnimationAnimationEffectTest, 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;
    TestAnimationEffect* animationNode = TestAnimationEffect::create(timing);

    animationNode->updateInheritedTime(0);
    EXPECT_EQ(0, animationNode->takeLocalTime());
    EXPECT_TRUE(std::isinf(animationNode->takeTimeToNextIteration()));

    // Normal iteration.
    animationNode->updateInheritedTime(1.75);
    EXPECT_EQ(1.75, animationNode->takeLocalTime());
    EXPECT_NEAR(0.05, animationNode->takeTimeToNextIteration(), 0.000000000000001);

    // Reverse iteration.
    animationNode->updateInheritedTime(2.75);
    EXPECT_EQ(2.75, animationNode->takeLocalTime());
    EXPECT_NEAR(0.05, animationNode->takeTimeToNextIteration(), 0.000000000000001);

    // Item ends before iteration finishes.
    animationNode->updateInheritedTime(3.4);
    EXPECT_EQ(AnimationEffect::PhaseActive, animationNode->phase());
    EXPECT_EQ(3.4, animationNode->takeLocalTime());
    EXPECT_TRUE(std::isinf(animationNode->takeTimeToNextIteration()));

    // Item has finished.
    animationNode->updateInheritedTime(3.5);
    EXPECT_EQ(AnimationEffect::PhaseAfter, animationNode->phase());
    EXPECT_EQ(3.5, animationNode->takeLocalTime());
    EXPECT_TRUE(std::isinf(animationNode->takeTimeToNextIteration()));
}

} // namespace blink