root/Source/core/animation/KeyframeEffectModelTest.cpp

DEFINITIONS

1. unknownAnimatableValue
2. pixelAnimatableValue
3. keyframesAtZeroAndOne
4. expectProperty
5. expectDoubleValue
6. findValue
7. TEST
8. TEST
9. TEST
10. TEST
11. TEST
12. TEST
13. TEST
14. TEST
15. TEST
16. TEST
17. TEST
18. TEST
19. TEST
20. TEST
21. TEST
22. TEST
23. TEST
24. TEST
25. TEST
26. TEST
27. TEST
28. TEST
29. TEST
30. normalizedKeyframes
31. TEST_F
32. TEST_F
33. TEST_F
34. TEST_F
35. TEST_F
36. TEST_F

/*
 * 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/KeyframeEffectModel.h"

#include "core/animation/AnimatableLength.h"
#include "core/animation/AnimatableUnknown.h"
#include "core/css/CSSPrimitiveValue.h"
#include "core/css/parser/BisonCSSParser.h"
#include "core/css/resolver/CSSToStyleMap.h"
#include <gtest/gtest.h>

using namespace WebCore;

namespace {

const double duration = 1.0;

PassRefPtrWillBeRawPtr<AnimatableValue> unknownAnimatableValue(double n)
{
    return AnimatableUnknown::create(CSSPrimitiveValue::create(n, CSSPrimitiveValue::CSS_UNKNOWN).get());
}

PassRefPtrWillBeRawPtr<AnimatableValue> pixelAnimatableValue(double n)
{
    return AnimatableLength::create(CSSPrimitiveValue::create(n, CSSPrimitiveValue::CSS_PX).get());
}

AnimatableValueKeyframeVector keyframesAtZeroAndOne(PassRefPtrWillBeRawPtr<AnimatableValue> zeroValue, PassRefPtrWillBeRawPtr<AnimatableValue> oneValue)
{
    AnimatableValueKeyframeVector keyframes(2);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.0);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, zeroValue.get());
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[1]->setOffset(1.0);
    keyframes[1]->setPropertyValue(CSSPropertyLeft, oneValue.get());
    return keyframes;
}

void expectProperty(CSSPropertyID property, PassRefPtrWillBeRawPtr<Interpolation> interpolationValue)
{
    LegacyStyleInterpolation* interpolation = toLegacyStyleInterpolation(interpolationValue.get());
    ASSERT_EQ(property, interpolation->id());
}

void expectDoubleValue(double expectedValue, PassRefPtrWillBeRawPtr<Interpolation> interpolationValue)
{
    LegacyStyleInterpolation* interpolation = toLegacyStyleInterpolation(interpolationValue.get());
    RefPtrWillBeRawPtr<AnimatableValue> value = interpolation->currentValue();

    ASSERT_TRUE(value->isLength() || value->isUnknown());

    double actualValue;
    if (value->isLength())
        actualValue = toCSSPrimitiveValue(toAnimatableLength(value.get())->toCSSValue().get())->getDoubleValue();
    else
        actualValue = toCSSPrimitiveValue(toAnimatableUnknown(value.get())->toCSSValue().get())->getDoubleValue();

    EXPECT_FLOAT_EQ(static_cast<float>(expectedValue), actualValue);
}

Interpolation* findValue(WillBeHeapVector<RefPtrWillBeMember<Interpolation> >& values, CSSPropertyID id)
{
    for (size_t i = 0; i < values.size(); ++i) {
        LegacyStyleInterpolation* value = toLegacyStyleInterpolation(values.at(i).get());
        if (value->id() == id)
            return value;
    }
    return 0;
}


TEST(AnimationKeyframeEffectModel, BasicOperation)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(unknownAnimatableValue(3.0), unknownAnimatableValue(5.0));
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > values = effect->sample(0, 0.6, duration);
    ASSERT_EQ(1UL, values->size());
    expectProperty(CSSPropertyLeft, values->at(0));
    expectDoubleValue(5.0, values->at(0));
}

TEST(AnimationKeyframeEffectModel, CompositeReplaceNonInterpolable)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(unknownAnimatableValue(3.0), unknownAnimatableValue(5.0));
    keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(5.0, effect->sample(0, 0.6, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, CompositeReplace)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(3.0 * 0.4 + 5.0 * 0.6, effect->sample(0, 0.6, duration)->at(0));
}

// FIXME: Re-enable this test once compositing of CompositeAdd is supported.
TEST(AnimationKeyframeEffectModel, DISABLED_CompositeAdd)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    keyframes[0]->setComposite(AnimationEffect::CompositeAdd);
    keyframes[1]->setComposite(AnimationEffect::CompositeAdd);
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue((7.0 + 3.0) * 0.4 + (7.0 + 5.0) * 0.6, effect->sample(0, 0.6, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, CompositeEaseIn)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    RefPtrWillBeRawPtr<CSSValue> timingFunction = BisonCSSParser::parseAnimationTimingFunctionValue("ease-in");
    keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    keyframes[0]->setEasing(CSSToStyleMap::animationTimingFunction(timingFunction.get(), false));
    keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(3.8579516, effect->sample(0, 0.6, duration)->at(0));
    expectDoubleValue(3.8582394, effect->sample(0, 0.6, duration * 100)->at(0));
}

TEST(AnimationKeyframeEffectModel, CompositeCubicBezier)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    RefPtrWillBeRawPtr<CSSValue> timingFunction = BisonCSSParser::parseAnimationTimingFunctionValue("cubic-bezier(0.42, 0, 0.58, 1)");
    keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    keyframes[0]->setEasing(CSSToStyleMap::animationTimingFunction(timingFunction.get(), false));
    keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(4.3363357, effect->sample(0, 0.6, duration)->at(0));
    expectDoubleValue(4.3362322, effect->sample(0, 0.6, duration * 1000)->at(0));
}

TEST(AnimationKeyframeEffectModel, ExtrapolateReplaceNonInterpolable)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(unknownAnimatableValue(3.0), unknownAnimatableValue(5.0));
    keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(5.0, effect->sample(0, 1.6, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, ExtrapolateReplace)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    expectDoubleValue(3.0 * -0.6 + 5.0 * 1.6, effect->sample(0, 1.6, duration)->at(0));
}

// FIXME: Re-enable this test once compositing of CompositeAdd is supported.
TEST(AnimationKeyframeEffectModel, DISABLED_ExtrapolateAdd)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    keyframes[0]->setComposite(AnimationEffect::CompositeAdd);
    keyframes[1]->setComposite(AnimationEffect::CompositeAdd);
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue((7.0 + 3.0) * -0.6 + (7.0 + 5.0) * 1.6, effect->sample(0, 1.6, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, ZeroKeyframes)
{
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(AnimatableValueKeyframeVector());
    EXPECT_TRUE(effect->sample(0, 0.5, duration)->isEmpty());
}

// FIXME: Re-enable this test once compositing of CompositeAdd is supported.
TEST(AnimationKeyframeEffectModel, DISABLED_SingleKeyframeAtOffsetZero)
{
    AnimatableValueKeyframeVector keyframes(1);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.0);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(3.0, effect->sample(0, 0.6, duration)->at(0));
}

// FIXME: Re-enable this test once compositing of CompositeAdd is supported.
TEST(AnimationKeyframeEffectModel, DISABLED_SingleKeyframeAtOffsetOne)
{
    AnimatableValueKeyframeVector keyframes(1);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(1.0);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(5.0).get());

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(7.0 * 0.4 + 5.0 * 0.6, effect->sample(0, 0.6, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, MoreThanTwoKeyframes)
{
    AnimatableValueKeyframeVector keyframes(3);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.0);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[1]->setOffset(0.5);
    keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[2]->setOffset(1.0);
    keyframes[2]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(4.0, effect->sample(0, 0.3, duration)->at(0));
    expectDoubleValue(5.0, effect->sample(0, 0.8, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, EndKeyframeOffsetsUnspecified)
{
    AnimatableValueKeyframeVector keyframes(3);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[1]->setOffset(0.5);
    keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[2]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(3.0, effect->sample(0, 0.1, duration)->at(0));
    expectDoubleValue(4.0, effect->sample(0, 0.6, duration)->at(0));
    expectDoubleValue(5.0, effect->sample(0, 0.9, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, SampleOnKeyframe)
{
    AnimatableValueKeyframeVector keyframes(3);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.0);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[1]->setOffset(0.5);
    keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[2]->setOffset(1.0);
    keyframes[2]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(3.0, effect->sample(0, 0.0, duration)->at(0));
    expectDoubleValue(4.0, effect->sample(0, 0.5, duration)->at(0));
    expectDoubleValue(5.0, effect->sample(0, 1.0, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, MultipleKeyframesWithSameOffset)
{
    AnimatableValueKeyframeVector keyframes(9);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.0);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(0.0).get());
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[1]->setOffset(0.1);
    keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(1.0).get());
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[2]->setOffset(0.1);
    keyframes[2]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(2.0).get());
    keyframes[3] = AnimatableValueKeyframe::create();
    keyframes[3]->setOffset(0.5);
    keyframes[3]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    keyframes[4] = AnimatableValueKeyframe::create();
    keyframes[4]->setOffset(0.5);
    keyframes[4]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());
    keyframes[5] = AnimatableValueKeyframe::create();
    keyframes[5]->setOffset(0.5);
    keyframes[5]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());
    keyframes[6] = AnimatableValueKeyframe::create();
    keyframes[6]->setOffset(0.9);
    keyframes[6]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(6.0).get());
    keyframes[7] = AnimatableValueKeyframe::create();
    keyframes[7]->setOffset(0.9);
    keyframes[7]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(7.0).get());
    keyframes[8] = AnimatableValueKeyframe::create();
    keyframes[8]->setOffset(1.0);
    keyframes[8]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(7.0).get());

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(0.0, effect->sample(0, 0.0, duration)->at(0));
    expectDoubleValue(2.0, effect->sample(0, 0.2, duration)->at(0));
    expectDoubleValue(3.0, effect->sample(0, 0.4, duration)->at(0));
    expectDoubleValue(5.0, effect->sample(0, 0.5, duration)->at(0));
    expectDoubleValue(5.0, effect->sample(0, 0.6, duration)->at(0));
    expectDoubleValue(6.0, effect->sample(0, 0.8, duration)->at(0));
    expectDoubleValue(7.0, effect->sample(0, 1.0, duration)->at(0));
}

// FIXME: Re-enable this test once compositing of CompositeAdd is supported.
TEST(AnimationKeyframeEffectModel, DISABLED_PerKeyframeComposite)
{
    AnimatableValueKeyframeVector keyframes(2);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.0);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(3.0).get());
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[1]->setOffset(1.0);
    keyframes[1]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(5.0).get());
    keyframes[1]->setComposite(AnimationEffect::CompositeAdd);

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(3.0 * 0.4 + (7.0 + 5.0) * 0.6, effect->sample(0, 0.6, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, MultipleProperties)
{
    AnimatableValueKeyframeVector keyframes(2);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.0);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    keyframes[0]->setPropertyValue(CSSPropertyRight, unknownAnimatableValue(4.0).get());
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[1]->setOffset(1.0);
    keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());
    keyframes[1]->setPropertyValue(CSSPropertyRight, unknownAnimatableValue(6.0).get());

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > values = effect->sample(0, 0.6, duration);
    EXPECT_EQ(2UL, values->size());
    Interpolation* leftValue = findValue(*values.get(), CSSPropertyLeft);
    ASSERT_TRUE(leftValue);
    expectDoubleValue(5.0, leftValue);
    Interpolation* rightValue = findValue(*values.get(), CSSPropertyRight);
    ASSERT_TRUE(rightValue);
    expectDoubleValue(6.0, rightValue);
}

// FIXME: Re-enable this test once compositing of CompositeAdd is supported.
TEST(AnimationKeyframeEffectModel, DISABLED_RecompositeCompositableValue)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    keyframes[0]->setComposite(AnimationEffect::CompositeAdd);
    keyframes[1]->setComposite(AnimationEffect::CompositeAdd);
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > values = effect->sample(0, 0.6, duration);
    expectDoubleValue((7.0 + 3.0) * 0.4 + (7.0 + 5.0) * 0.6, values->at(0));
    expectDoubleValue((9.0 + 3.0) * 0.4 + (9.0 + 5.0) * 0.6, values->at(0));
}

TEST(AnimationKeyframeEffectModel, MultipleIterations)
{
    AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(1.0), pixelAnimatableValue(3.0));
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    expectDoubleValue(2.0, effect->sample(0, 0.5, duration)->at(0));
    expectDoubleValue(2.0, effect->sample(1, 0.5, duration)->at(0));
    expectDoubleValue(2.0, effect->sample(2, 0.5, duration)->at(0));
}

// FIXME: Re-enable this test once compositing of CompositeAdd is supported.
TEST(AnimationKeyframeEffectModel, DISABLED_DependsOnUnderlyingValue)
{
    AnimatableValueKeyframeVector keyframes(3);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.0);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(1.0).get());
    keyframes[0]->setComposite(AnimationEffect::CompositeAdd);
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[1]->setOffset(0.5);
    keyframes[1]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(1.0).get());
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[2]->setOffset(1.0);
    keyframes[2]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(1.0).get());

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    EXPECT_TRUE(effect->sample(0, 0, duration)->at(0));
    EXPECT_TRUE(effect->sample(0, 0.1, duration)->at(0));
    EXPECT_TRUE(effect->sample(0, 0.25, duration)->at(0));
    EXPECT_TRUE(effect->sample(0, 0.4, duration)->at(0));
    EXPECT_FALSE(effect->sample(0, 0.5, duration)->at(0));
    EXPECT_FALSE(effect->sample(0, 0.6, duration)->at(0));
    EXPECT_FALSE(effect->sample(0, 0.75, duration)->at(0));
    EXPECT_FALSE(effect->sample(0, 0.8, duration)->at(0));
    EXPECT_FALSE(effect->sample(0, 1, duration)->at(0));
}

TEST(AnimationKeyframeEffectModel, AddSyntheticKeyframes)
{
    AnimatableValueKeyframeVector keyframes(1);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.5);
    keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());

    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    const AnimatableValuePropertySpecificKeyframeVector& propertySpecificKeyframes = effect->getPropertySpecificKeyframes(CSSPropertyLeft);
    EXPECT_EQ(3U, propertySpecificKeyframes.size());
    EXPECT_DOUBLE_EQ(0.0, propertySpecificKeyframes[0]->offset());
    EXPECT_DOUBLE_EQ(0.5, propertySpecificKeyframes[1]->offset());
    EXPECT_DOUBLE_EQ(1.0, propertySpecificKeyframes[2]->offset());
}

TEST(AnimationKeyframeEffectModel, ToKeyframeEffectModel)
{
    AnimatableValueKeyframeVector keyframes(0);
    RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);

    AnimationEffect* baseEffect = effect.get();
    EXPECT_TRUE(toAnimatableValueKeyframeEffectModel(baseEffect));
}

} // namespace

namespace WebCore {

class KeyframeEffectModelTest : public ::testing::Test {
public:
    static KeyframeVector normalizedKeyframes(const KeyframeVector& keyframes)
    {
        return KeyframeEffectModelBase::normalizedKeyframes(keyframes);
    }
};

TEST_F(KeyframeEffectModelTest, NotLooselySorted)
{
    KeyframeVector keyframes(4);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[1]->setOffset(9);
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[3] = AnimatableValueKeyframe::create();
    keyframes[3]->setOffset(1);

    const KeyframeVector result = normalizedKeyframes(keyframes);
    EXPECT_EQ(0U, result.size());
}

TEST_F(KeyframeEffectModelTest, LastOne)
{
    KeyframeVector keyframes(3);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(-1);
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[2]->setOffset(2);

    const KeyframeVector result = normalizedKeyframes(keyframes);
    EXPECT_EQ(1U, result.size());
    EXPECT_DOUBLE_EQ(1.0, result[0]->offset());
}

TEST_F(KeyframeEffectModelTest, FirstZero)
{
    KeyframeVector keyframes(3);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(-1);
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[2]->setOffset(0.25);

    const KeyframeVector result = normalizedKeyframes(keyframes);
    EXPECT_EQ(2U, result.size());
    EXPECT_DOUBLE_EQ(0.0, result[0]->offset());
    EXPECT_DOUBLE_EQ(0.25, result[1]->offset());
}

TEST_F(KeyframeEffectModelTest, EvenlyDistributed1)
{
    KeyframeVector keyframes(5);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0.125);
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[3] = AnimatableValueKeyframe::create();
    keyframes[4] = AnimatableValueKeyframe::create();
    keyframes[4]->setOffset(0.625);

    const KeyframeVector result = normalizedKeyframes(keyframes);
    EXPECT_EQ(5U, result.size());
    EXPECT_DOUBLE_EQ(0.125, result[0]->offset());
    EXPECT_DOUBLE_EQ(0.25, result[1]->offset());
    EXPECT_DOUBLE_EQ(0.375, result[2]->offset());
    EXPECT_DOUBLE_EQ(0.5, result[3]->offset());
    EXPECT_DOUBLE_EQ(0.625, result[4]->offset());
}

TEST_F(KeyframeEffectModelTest, EvenlyDistributed2)
{
    KeyframeVector keyframes(8);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(-0.1);
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[3] = AnimatableValueKeyframe::create();
    keyframes[4] = AnimatableValueKeyframe::create();
    keyframes[4]->setOffset(0.75);
    keyframes[5] = AnimatableValueKeyframe::create();
    keyframes[6] = AnimatableValueKeyframe::create();
    keyframes[7] = AnimatableValueKeyframe::create();
    keyframes[7]->setOffset(1.1);

    const KeyframeVector result = normalizedKeyframes(keyframes);
    EXPECT_EQ(6U, result.size());
    EXPECT_DOUBLE_EQ(0.0, result[0]->offset());
    EXPECT_DOUBLE_EQ(0.25, result[1]->offset());
    EXPECT_DOUBLE_EQ(0.5, result[2]->offset());
    EXPECT_DOUBLE_EQ(0.75, result[3]->offset());
    EXPECT_DOUBLE_EQ(0.875, result[4]->offset());
    EXPECT_DOUBLE_EQ(1.0, result[5]->offset());
}

TEST_F(KeyframeEffectModelTest, EvenlyDistributed3)
{
    KeyframeVector keyframes(12);
    keyframes[0] = AnimatableValueKeyframe::create();
    keyframes[0]->setOffset(0);
    keyframes[1] = AnimatableValueKeyframe::create();
    keyframes[2] = AnimatableValueKeyframe::create();
    keyframes[3] = AnimatableValueKeyframe::create();
    keyframes[4] = AnimatableValueKeyframe::create();
    keyframes[4]->setOffset(0.5);
    keyframes[5] = AnimatableValueKeyframe::create();
    keyframes[6] = AnimatableValueKeyframe::create();
    keyframes[7] = AnimatableValueKeyframe::create();
    keyframes[7]->setOffset(0.8);
    keyframes[8] = AnimatableValueKeyframe::create();
    keyframes[9] = AnimatableValueKeyframe::create();
    keyframes[10] = AnimatableValueKeyframe::create();
    keyframes[11] = AnimatableValueKeyframe::create();

    const KeyframeVector result = normalizedKeyframes(keyframes);
    EXPECT_EQ(12U, result.size());
    EXPECT_DOUBLE_EQ(0.0, result[0]->offset());
    EXPECT_DOUBLE_EQ(0.125, result[1]->offset());
    EXPECT_DOUBLE_EQ(0.25, result[2]->offset());
    EXPECT_DOUBLE_EQ(0.375, result[3]->offset());
    EXPECT_DOUBLE_EQ(0.5, result[4]->offset());
    EXPECT_DOUBLE_EQ(0.6, result[5]->offset());
    EXPECT_DOUBLE_EQ(0.7, result[6]->offset());
    EXPECT_DOUBLE_EQ(0.8, result[7]->offset());
    EXPECT_DOUBLE_EQ(0.85, result[8]->offset());
    EXPECT_DOUBLE_EQ(0.9, result[9]->offset());
    EXPECT_DOUBLE_EQ(0.95, result[10]->offset());
    EXPECT_DOUBLE_EQ(1.0, result[11]->offset());
}

} // namespace WebCore