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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
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     30 
     31 #include "config.h"
     32 #include "core/animation/KeyframeEffectModel.h"
     33 
     34 #include "core/animation/AnimatableLength.h"
     35 #include "core/animation/AnimatableUnknown.h"
     36 #include "core/animation/interpolation/LegacyStyleInterpolation.h"
     37 #include "core/css/CSSPrimitiveValue.h"
     38 #include "core/css/parser/BisonCSSParser.h"
     39 #include "core/css/resolver/CSSToStyleMap.h"
     40 #include <gtest/gtest.h>
     41 
     42 using namespace WebCore;
     43 
     44 namespace {
     45 
     46 const double duration = 1.0;
     47 
     48 PassRefPtrWillBeRawPtr<AnimatableValue> unknownAnimatableValue(double n)
     49 {
     50     return AnimatableUnknown::create(CSSPrimitiveValue::create(n, CSSPrimitiveValue::CSS_UNKNOWN).get());
     51 }
     52 
     53 PassRefPtrWillBeRawPtr<AnimatableValue> pixelAnimatableValue(double n)
     54 {
     55     return AnimatableLength::create(Length(n, Fixed), 1);
     56 }
     57 
     58 AnimatableValueKeyframeVector keyframesAtZeroAndOne(PassRefPtrWillBeRawPtr<AnimatableValue> zeroValue, PassRefPtrWillBeRawPtr<AnimatableValue> oneValue)
     59 {
     60     AnimatableValueKeyframeVector keyframes(2);
     61     keyframes[0] = AnimatableValueKeyframe::create();
     62     keyframes[0]->setOffset(0.0);
     63     keyframes[0]->setPropertyValue(CSSPropertyLeft, zeroValue.get());
     64     keyframes[1] = AnimatableValueKeyframe::create();
     65     keyframes[1]->setOffset(1.0);
     66     keyframes[1]->setPropertyValue(CSSPropertyLeft, oneValue.get());
     67     return keyframes;
     68 }
     69 
     70 void expectProperty(CSSPropertyID property, PassRefPtrWillBeRawPtr<Interpolation> interpolationValue)
     71 {
     72     LegacyStyleInterpolation* interpolation = toLegacyStyleInterpolation(interpolationValue.get());
     73     ASSERT_EQ(property, interpolation->id());
     74 }
     75 
     76 void expectDoubleValue(double expectedValue, PassRefPtrWillBeRawPtr<Interpolation> interpolationValue)
     77 {
     78     LegacyStyleInterpolation* interpolation = toLegacyStyleInterpolation(interpolationValue.get());
     79     RefPtrWillBeRawPtr<AnimatableValue> value = interpolation->currentValue();
     80 
     81     ASSERT_TRUE(value->isLength() || value->isUnknown());
     82 
     83     double actualValue;
     84     if (value->isLength())
     85         actualValue = toAnimatableLength(value.get())->length(1, ValueRangeAll).value();
     86     else
     87         actualValue = toCSSPrimitiveValue(toAnimatableUnknown(value.get())->toCSSValue().get())->getDoubleValue();
     88 
     89     EXPECT_FLOAT_EQ(static_cast<float>(expectedValue), actualValue);
     90 }
     91 
     92 Interpolation* findValue(WillBeHeapVector<RefPtrWillBeMember<Interpolation> >& values, CSSPropertyID id)
     93 {
     94     for (size_t i = 0; i < values.size(); ++i) {
     95         LegacyStyleInterpolation* value = toLegacyStyleInterpolation(values.at(i).get());
     96         if (value->id() == id)
     97             return value;
     98     }
     99     return 0;
    100 }
    101 
    102 
    103 TEST(AnimationKeyframeEffectModel, BasicOperation)
    104 {
    105     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(unknownAnimatableValue(3.0), unknownAnimatableValue(5.0));
    106     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    107     OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > values = effect->sample(0, 0.6, duration);
    108     ASSERT_EQ(1UL, values->size());
    109     expectProperty(CSSPropertyLeft, values->at(0));
    110     expectDoubleValue(5.0, values->at(0));
    111 }
    112 
    113 TEST(AnimationKeyframeEffectModel, CompositeReplaceNonInterpolable)
    114 {
    115     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(unknownAnimatableValue(3.0), unknownAnimatableValue(5.0));
    116     keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    117     keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    118     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    119     expectDoubleValue(5.0, effect->sample(0, 0.6, duration)->at(0));
    120 }
    121 
    122 TEST(AnimationKeyframeEffectModel, CompositeReplace)
    123 {
    124     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    125     keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    126     keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    127     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    128     expectDoubleValue(3.0 * 0.4 + 5.0 * 0.6, effect->sample(0, 0.6, duration)->at(0));
    129 }
    130 
    131 // FIXME: Re-enable this test once compositing of CompositeAdd is supported.
    132 TEST(AnimationKeyframeEffectModel, DISABLED_CompositeAdd)
    133 {
    134     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    135     keyframes[0]->setComposite(AnimationEffect::CompositeAdd);
    136     keyframes[1]->setComposite(AnimationEffect::CompositeAdd);
    137     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    138     expectDoubleValue((7.0 + 3.0) * 0.4 + (7.0 + 5.0) * 0.6, effect->sample(0, 0.6, duration)->at(0));
    139 }
    140 
    141 TEST(AnimationKeyframeEffectModel, CompositeEaseIn)
    142 {
    143     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    144     RefPtrWillBeRawPtr<CSSValue> timingFunction = BisonCSSParser::parseAnimationTimingFunctionValue("ease-in");
    145     keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    146     keyframes[0]->setEasing(CSSToStyleMap::mapAnimationTimingFunction(timingFunction.get(), true));
    147     keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    148     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    149     expectDoubleValue(3.8579516, effect->sample(0, 0.6, duration)->at(0));
    150     expectDoubleValue(3.8582394, effect->sample(0, 0.6, duration * 100)->at(0));
    151 }
    152 
    153 TEST(AnimationKeyframeEffectModel, CompositeCubicBezier)
    154 {
    155     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    156     RefPtrWillBeRawPtr<CSSValue> timingFunction = BisonCSSParser::parseAnimationTimingFunctionValue("cubic-bezier(0.42, 0, 0.58, 1)");
    157     keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    158     keyframes[0]->setEasing(CSSToStyleMap::mapAnimationTimingFunction(timingFunction.get(), true));
    159     keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    160     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    161     expectDoubleValue(4.3363357, effect->sample(0, 0.6, duration)->at(0));
    162     expectDoubleValue(4.3362322, effect->sample(0, 0.6, duration * 1000)->at(0));
    163 }
    164 
    165 TEST(AnimationKeyframeEffectModel, ExtrapolateReplaceNonInterpolable)
    166 {
    167     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(unknownAnimatableValue(3.0), unknownAnimatableValue(5.0));
    168     keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    169     keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    170     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    171     expectDoubleValue(5.0, effect->sample(0, 1.6, duration)->at(0));
    172 }
    173 
    174 TEST(AnimationKeyframeEffectModel, ExtrapolateReplace)
    175 {
    176     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    177     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    178     keyframes[0]->setComposite(AnimationEffect::CompositeReplace);
    179     keyframes[1]->setComposite(AnimationEffect::CompositeReplace);
    180     expectDoubleValue(3.0 * -0.6 + 5.0 * 1.6, effect->sample(0, 1.6, duration)->at(0));
    181 }
    182 
    183 // FIXME: Re-enable this test once compositing of CompositeAdd is supported.
    184 TEST(AnimationKeyframeEffectModel, DISABLED_ExtrapolateAdd)
    185 {
    186     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    187     keyframes[0]->setComposite(AnimationEffect::CompositeAdd);
    188     keyframes[1]->setComposite(AnimationEffect::CompositeAdd);
    189     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    190     expectDoubleValue((7.0 + 3.0) * -0.6 + (7.0 + 5.0) * 1.6, effect->sample(0, 1.6, duration)->at(0));
    191 }
    192 
    193 TEST(AnimationKeyframeEffectModel, ZeroKeyframes)
    194 {
    195     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(AnimatableValueKeyframeVector());
    196     EXPECT_TRUE(effect->sample(0, 0.5, duration)->isEmpty());
    197 }
    198 
    199 // FIXME: Re-enable this test once compositing of CompositeAdd is supported.
    200 TEST(AnimationKeyframeEffectModel, DISABLED_SingleKeyframeAtOffsetZero)
    201 {
    202     AnimatableValueKeyframeVector keyframes(1);
    203     keyframes[0] = AnimatableValueKeyframe::create();
    204     keyframes[0]->setOffset(0.0);
    205     keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    206 
    207     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    208     expectDoubleValue(3.0, effect->sample(0, 0.6, duration)->at(0));
    209 }
    210 
    211 // FIXME: Re-enable this test once compositing of CompositeAdd is supported.
    212 TEST(AnimationKeyframeEffectModel, DISABLED_SingleKeyframeAtOffsetOne)
    213 {
    214     AnimatableValueKeyframeVector keyframes(1);
    215     keyframes[0] = AnimatableValueKeyframe::create();
    216     keyframes[0]->setOffset(1.0);
    217     keyframes[0]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(5.0).get());
    218 
    219     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    220     expectDoubleValue(7.0 * 0.4 + 5.0 * 0.6, effect->sample(0, 0.6, duration)->at(0));
    221 }
    222 
    223 TEST(AnimationKeyframeEffectModel, MoreThanTwoKeyframes)
    224 {
    225     AnimatableValueKeyframeVector keyframes(3);
    226     keyframes[0] = AnimatableValueKeyframe::create();
    227     keyframes[0]->setOffset(0.0);
    228     keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    229     keyframes[1] = AnimatableValueKeyframe::create();
    230     keyframes[1]->setOffset(0.5);
    231     keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());
    232     keyframes[2] = AnimatableValueKeyframe::create();
    233     keyframes[2]->setOffset(1.0);
    234     keyframes[2]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());
    235 
    236     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    237     expectDoubleValue(4.0, effect->sample(0, 0.3, duration)->at(0));
    238     expectDoubleValue(5.0, effect->sample(0, 0.8, duration)->at(0));
    239 }
    240 
    241 TEST(AnimationKeyframeEffectModel, EndKeyframeOffsetsUnspecified)
    242 {
    243     AnimatableValueKeyframeVector keyframes(3);
    244     keyframes[0] = AnimatableValueKeyframe::create();
    245     keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    246     keyframes[1] = AnimatableValueKeyframe::create();
    247     keyframes[1]->setOffset(0.5);
    248     keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());
    249     keyframes[2] = AnimatableValueKeyframe::create();
    250     keyframes[2]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());
    251 
    252     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    253     expectDoubleValue(3.0, effect->sample(0, 0.1, duration)->at(0));
    254     expectDoubleValue(4.0, effect->sample(0, 0.6, duration)->at(0));
    255     expectDoubleValue(5.0, effect->sample(0, 0.9, duration)->at(0));
    256 }
    257 
    258 TEST(AnimationKeyframeEffectModel, SampleOnKeyframe)
    259 {
    260     AnimatableValueKeyframeVector keyframes(3);
    261     keyframes[0] = AnimatableValueKeyframe::create();
    262     keyframes[0]->setOffset(0.0);
    263     keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    264     keyframes[1] = AnimatableValueKeyframe::create();
    265     keyframes[1]->setOffset(0.5);
    266     keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());
    267     keyframes[2] = AnimatableValueKeyframe::create();
    268     keyframes[2]->setOffset(1.0);
    269     keyframes[2]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());
    270 
    271     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    272     expectDoubleValue(3.0, effect->sample(0, 0.0, duration)->at(0));
    273     expectDoubleValue(4.0, effect->sample(0, 0.5, duration)->at(0));
    274     expectDoubleValue(5.0, effect->sample(0, 1.0, duration)->at(0));
    275 }
    276 
    277 TEST(AnimationKeyframeEffectModel, MultipleKeyframesWithSameOffset)
    278 {
    279     AnimatableValueKeyframeVector keyframes(9);
    280     keyframes[0] = AnimatableValueKeyframe::create();
    281     keyframes[0]->setOffset(0.0);
    282     keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(0.0).get());
    283     keyframes[1] = AnimatableValueKeyframe::create();
    284     keyframes[1]->setOffset(0.1);
    285     keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(1.0).get());
    286     keyframes[2] = AnimatableValueKeyframe::create();
    287     keyframes[2]->setOffset(0.1);
    288     keyframes[2]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(2.0).get());
    289     keyframes[3] = AnimatableValueKeyframe::create();
    290     keyframes[3]->setOffset(0.5);
    291     keyframes[3]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    292     keyframes[4] = AnimatableValueKeyframe::create();
    293     keyframes[4]->setOffset(0.5);
    294     keyframes[4]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());
    295     keyframes[5] = AnimatableValueKeyframe::create();
    296     keyframes[5]->setOffset(0.5);
    297     keyframes[5]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());
    298     keyframes[6] = AnimatableValueKeyframe::create();
    299     keyframes[6]->setOffset(0.9);
    300     keyframes[6]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(6.0).get());
    301     keyframes[7] = AnimatableValueKeyframe::create();
    302     keyframes[7]->setOffset(0.9);
    303     keyframes[7]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(7.0).get());
    304     keyframes[8] = AnimatableValueKeyframe::create();
    305     keyframes[8]->setOffset(1.0);
    306     keyframes[8]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(7.0).get());
    307 
    308     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    309     expectDoubleValue(0.0, effect->sample(0, 0.0, duration)->at(0));
    310     expectDoubleValue(2.0, effect->sample(0, 0.2, duration)->at(0));
    311     expectDoubleValue(3.0, effect->sample(0, 0.4, duration)->at(0));
    312     expectDoubleValue(5.0, effect->sample(0, 0.5, duration)->at(0));
    313     expectDoubleValue(5.0, effect->sample(0, 0.6, duration)->at(0));
    314     expectDoubleValue(6.0, effect->sample(0, 0.8, duration)->at(0));
    315     expectDoubleValue(7.0, effect->sample(0, 1.0, duration)->at(0));
    316 }
    317 
    318 // FIXME: Re-enable this test once compositing of CompositeAdd is supported.
    319 TEST(AnimationKeyframeEffectModel, DISABLED_PerKeyframeComposite)
    320 {
    321     AnimatableValueKeyframeVector keyframes(2);
    322     keyframes[0] = AnimatableValueKeyframe::create();
    323     keyframes[0]->setOffset(0.0);
    324     keyframes[0]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(3.0).get());
    325     keyframes[1] = AnimatableValueKeyframe::create();
    326     keyframes[1]->setOffset(1.0);
    327     keyframes[1]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(5.0).get());
    328     keyframes[1]->setComposite(AnimationEffect::CompositeAdd);
    329 
    330     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    331     expectDoubleValue(3.0 * 0.4 + (7.0 + 5.0) * 0.6, effect->sample(0, 0.6, duration)->at(0));
    332 }
    333 
    334 TEST(AnimationKeyframeEffectModel, MultipleProperties)
    335 {
    336     AnimatableValueKeyframeVector keyframes(2);
    337     keyframes[0] = AnimatableValueKeyframe::create();
    338     keyframes[0]->setOffset(0.0);
    339     keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(3.0).get());
    340     keyframes[0]->setPropertyValue(CSSPropertyRight, unknownAnimatableValue(4.0).get());
    341     keyframes[1] = AnimatableValueKeyframe::create();
    342     keyframes[1]->setOffset(1.0);
    343     keyframes[1]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(5.0).get());
    344     keyframes[1]->setPropertyValue(CSSPropertyRight, unknownAnimatableValue(6.0).get());
    345 
    346     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    347     OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > values = effect->sample(0, 0.6, duration);
    348     EXPECT_EQ(2UL, values->size());
    349     Interpolation* leftValue = findValue(*values.get(), CSSPropertyLeft);
    350     ASSERT_TRUE(leftValue);
    351     expectDoubleValue(5.0, leftValue);
    352     Interpolation* rightValue = findValue(*values.get(), CSSPropertyRight);
    353     ASSERT_TRUE(rightValue);
    354     expectDoubleValue(6.0, rightValue);
    355 }
    356 
    357 // FIXME: Re-enable this test once compositing of CompositeAdd is supported.
    358 TEST(AnimationKeyframeEffectModel, DISABLED_RecompositeCompositableValue)
    359 {
    360     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(3.0), pixelAnimatableValue(5.0));
    361     keyframes[0]->setComposite(AnimationEffect::CompositeAdd);
    362     keyframes[1]->setComposite(AnimationEffect::CompositeAdd);
    363     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    364     OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > values = effect->sample(0, 0.6, duration);
    365     expectDoubleValue((7.0 + 3.0) * 0.4 + (7.0 + 5.0) * 0.6, values->at(0));
    366     expectDoubleValue((9.0 + 3.0) * 0.4 + (9.0 + 5.0) * 0.6, values->at(0));
    367 }
    368 
    369 TEST(AnimationKeyframeEffectModel, MultipleIterations)
    370 {
    371     AnimatableValueKeyframeVector keyframes = keyframesAtZeroAndOne(pixelAnimatableValue(1.0), pixelAnimatableValue(3.0));
    372     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    373     expectDoubleValue(2.0, effect->sample(0, 0.5, duration)->at(0));
    374     expectDoubleValue(2.0, effect->sample(1, 0.5, duration)->at(0));
    375     expectDoubleValue(2.0, effect->sample(2, 0.5, duration)->at(0));
    376 }
    377 
    378 // FIXME: Re-enable this test once compositing of CompositeAdd is supported.
    379 TEST(AnimationKeyframeEffectModel, DISABLED_DependsOnUnderlyingValue)
    380 {
    381     AnimatableValueKeyframeVector keyframes(3);
    382     keyframes[0] = AnimatableValueKeyframe::create();
    383     keyframes[0]->setOffset(0.0);
    384     keyframes[0]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(1.0).get());
    385     keyframes[0]->setComposite(AnimationEffect::CompositeAdd);
    386     keyframes[1] = AnimatableValueKeyframe::create();
    387     keyframes[1]->setOffset(0.5);
    388     keyframes[1]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(1.0).get());
    389     keyframes[2] = AnimatableValueKeyframe::create();
    390     keyframes[2]->setOffset(1.0);
    391     keyframes[2]->setPropertyValue(CSSPropertyLeft, pixelAnimatableValue(1.0).get());
    392 
    393     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    394     EXPECT_TRUE(effect->sample(0, 0, duration)->at(0));
    395     EXPECT_TRUE(effect->sample(0, 0.1, duration)->at(0));
    396     EXPECT_TRUE(effect->sample(0, 0.25, duration)->at(0));
    397     EXPECT_TRUE(effect->sample(0, 0.4, duration)->at(0));
    398     EXPECT_FALSE(effect->sample(0, 0.5, duration)->at(0));
    399     EXPECT_FALSE(effect->sample(0, 0.6, duration)->at(0));
    400     EXPECT_FALSE(effect->sample(0, 0.75, duration)->at(0));
    401     EXPECT_FALSE(effect->sample(0, 0.8, duration)->at(0));
    402     EXPECT_FALSE(effect->sample(0, 1, duration)->at(0));
    403 }
    404 
    405 TEST(AnimationKeyframeEffectModel, AddSyntheticKeyframes)
    406 {
    407     AnimatableValueKeyframeVector keyframes(1);
    408     keyframes[0] = AnimatableValueKeyframe::create();
    409     keyframes[0]->setOffset(0.5);
    410     keyframes[0]->setPropertyValue(CSSPropertyLeft, unknownAnimatableValue(4.0).get());
    411 
    412     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    413     const AnimatableValuePropertySpecificKeyframeVector& propertySpecificKeyframes = effect->getPropertySpecificKeyframes(CSSPropertyLeft);
    414     EXPECT_EQ(3U, propertySpecificKeyframes.size());
    415     EXPECT_DOUBLE_EQ(0.0, propertySpecificKeyframes[0]->offset());
    416     EXPECT_DOUBLE_EQ(0.5, propertySpecificKeyframes[1]->offset());
    417     EXPECT_DOUBLE_EQ(1.0, propertySpecificKeyframes[2]->offset());
    418 }
    419 
    420 TEST(AnimationKeyframeEffectModel, ToKeyframeEffectModel)
    421 {
    422     AnimatableValueKeyframeVector keyframes(0);
    423     RefPtrWillBeRawPtr<AnimatableValueKeyframeEffectModel> effect = AnimatableValueKeyframeEffectModel::create(keyframes);
    424 
    425     AnimationEffect* baseEffect = effect.get();
    426     EXPECT_TRUE(toAnimatableValueKeyframeEffectModel(baseEffect));
    427 }
    428 
    429 } // namespace
    430 
    431 namespace WebCore {
    432 
    433 class KeyframeEffectModelTest : public ::testing::Test {
    434 public:
    435     static KeyframeVector normalizedKeyframes(const KeyframeVector& keyframes)
    436     {
    437         return KeyframeEffectModelBase::normalizedKeyframes(keyframes);
    438     }
    439 };
    440 
    441 TEST_F(KeyframeEffectModelTest, NotLooselySorted)
    442 {
    443     KeyframeVector keyframes(4);
    444     keyframes[0] = AnimatableValueKeyframe::create();
    445     keyframes[1] = AnimatableValueKeyframe::create();
    446     keyframes[1]->setOffset(9);
    447     keyframes[2] = AnimatableValueKeyframe::create();
    448     keyframes[3] = AnimatableValueKeyframe::create();
    449     keyframes[3]->setOffset(1);
    450 
    451     const KeyframeVector result = normalizedKeyframes(keyframes);
    452     EXPECT_EQ(0U, result.size());
    453 }
    454 
    455 TEST_F(KeyframeEffectModelTest, LastOne)
    456 {
    457     KeyframeVector keyframes(3);
    458     keyframes[0] = AnimatableValueKeyframe::create();
    459     keyframes[0]->setOffset(-1);
    460     keyframes[1] = AnimatableValueKeyframe::create();
    461     keyframes[2] = AnimatableValueKeyframe::create();
    462     keyframes[2]->setOffset(2);
    463 
    464     const KeyframeVector result = normalizedKeyframes(keyframes);
    465     EXPECT_EQ(1U, result.size());
    466     EXPECT_DOUBLE_EQ(1.0, result[0]->offset());
    467 }
    468 
    469 TEST_F(KeyframeEffectModelTest, FirstZero)
    470 {
    471     KeyframeVector keyframes(3);
    472     keyframes[0] = AnimatableValueKeyframe::create();
    473     keyframes[0]->setOffset(-1);
    474     keyframes[1] = AnimatableValueKeyframe::create();
    475     keyframes[2] = AnimatableValueKeyframe::create();
    476     keyframes[2]->setOffset(0.25);
    477 
    478     const KeyframeVector result = normalizedKeyframes(keyframes);
    479     EXPECT_EQ(2U, result.size());
    480     EXPECT_DOUBLE_EQ(0.0, result[0]->offset());
    481     EXPECT_DOUBLE_EQ(0.25, result[1]->offset());
    482 }
    483 
    484 TEST_F(KeyframeEffectModelTest, EvenlyDistributed1)
    485 {
    486     KeyframeVector keyframes(5);
    487     keyframes[0] = AnimatableValueKeyframe::create();
    488     keyframes[0]->setOffset(0.125);
    489     keyframes[1] = AnimatableValueKeyframe::create();
    490     keyframes[2] = AnimatableValueKeyframe::create();
    491     keyframes[3] = AnimatableValueKeyframe::create();
    492     keyframes[4] = AnimatableValueKeyframe::create();
    493     keyframes[4]->setOffset(0.625);
    494 
    495     const KeyframeVector result = normalizedKeyframes(keyframes);
    496     EXPECT_EQ(5U, result.size());
    497     EXPECT_DOUBLE_EQ(0.125, result[0]->offset());
    498     EXPECT_DOUBLE_EQ(0.25, result[1]->offset());
    499     EXPECT_DOUBLE_EQ(0.375, result[2]->offset());
    500     EXPECT_DOUBLE_EQ(0.5, result[3]->offset());
    501     EXPECT_DOUBLE_EQ(0.625, result[4]->offset());
    502 }
    503 
    504 TEST_F(KeyframeEffectModelTest, EvenlyDistributed2)
    505 {
    506     KeyframeVector keyframes(8);
    507     keyframes[0] = AnimatableValueKeyframe::create();
    508     keyframes[0]->setOffset(-0.1);
    509     keyframes[1] = AnimatableValueKeyframe::create();
    510     keyframes[2] = AnimatableValueKeyframe::create();
    511     keyframes[3] = AnimatableValueKeyframe::create();
    512     keyframes[4] = AnimatableValueKeyframe::create();
    513     keyframes[4]->setOffset(0.75);
    514     keyframes[5] = AnimatableValueKeyframe::create();
    515     keyframes[6] = AnimatableValueKeyframe::create();
    516     keyframes[7] = AnimatableValueKeyframe::create();
    517     keyframes[7]->setOffset(1.1);
    518 
    519     const KeyframeVector result = normalizedKeyframes(keyframes);
    520     EXPECT_EQ(6U, result.size());
    521     EXPECT_DOUBLE_EQ(0.0, result[0]->offset());
    522     EXPECT_DOUBLE_EQ(0.25, result[1]->offset());
    523     EXPECT_DOUBLE_EQ(0.5, result[2]->offset());
    524     EXPECT_DOUBLE_EQ(0.75, result[3]->offset());
    525     EXPECT_DOUBLE_EQ(0.875, result[4]->offset());
    526     EXPECT_DOUBLE_EQ(1.0, result[5]->offset());
    527 }
    528 
    529 TEST_F(KeyframeEffectModelTest, EvenlyDistributed3)
    530 {
    531     KeyframeVector keyframes(12);
    532     keyframes[0] = AnimatableValueKeyframe::create();
    533     keyframes[0]->setOffset(0);
    534     keyframes[1] = AnimatableValueKeyframe::create();
    535     keyframes[2] = AnimatableValueKeyframe::create();
    536     keyframes[3] = AnimatableValueKeyframe::create();
    537     keyframes[4] = AnimatableValueKeyframe::create();
    538     keyframes[4]->setOffset(0.5);
    539     keyframes[5] = AnimatableValueKeyframe::create();
    540     keyframes[6] = AnimatableValueKeyframe::create();
    541     keyframes[7] = AnimatableValueKeyframe::create();
    542     keyframes[7]->setOffset(0.8);
    543     keyframes[8] = AnimatableValueKeyframe::create();
    544     keyframes[9] = AnimatableValueKeyframe::create();
    545     keyframes[10] = AnimatableValueKeyframe::create();
    546     keyframes[11] = AnimatableValueKeyframe::create();
    547 
    548     const KeyframeVector result = normalizedKeyframes(keyframes);
    549     EXPECT_EQ(12U, result.size());
    550     EXPECT_DOUBLE_EQ(0.0, result[0]->offset());
    551     EXPECT_DOUBLE_EQ(0.125, result[1]->offset());
    552     EXPECT_DOUBLE_EQ(0.25, result[2]->offset());
    553     EXPECT_DOUBLE_EQ(0.375, result[3]->offset());
    554     EXPECT_DOUBLE_EQ(0.5, result[4]->offset());
    555     EXPECT_DOUBLE_EQ(0.6, result[5]->offset());
    556     EXPECT_DOUBLE_EQ(0.7, result[6]->offset());
    557     EXPECT_DOUBLE_EQ(0.8, result[7]->offset());
    558     EXPECT_DOUBLE_EQ(0.85, result[8]->offset());
    559     EXPECT_DOUBLE_EQ(0.9, result[9]->offset());
    560     EXPECT_DOUBLE_EQ(0.95, result[10]->offset());
    561     EXPECT_DOUBLE_EQ(1.0, result[11]->offset());
    562 }
    563 
    564 } // namespace WebCore
    565