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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/animation/InterpolationEffect.h"
#include "core/animation/LegacyStyleInterpolation.h"
#include "testing/gtest/include/gtest/gtest.h"
#include <memory>
namespace blink {
namespace {
class SampleInterpolation : public LegacyStyleInterpolation {
public:
static PassRefPtr<LegacyStyleInterpolation> create(
std::unique_ptr<InterpolableValue> start,
std::unique_ptr<InterpolableValue> end) {
return adoptRef(new SampleInterpolation(std::move(start), std::move(end)));
}
private:
SampleInterpolation(std::unique_ptr<InterpolableValue> start,
std::unique_ptr<InterpolableValue> end)
: LegacyStyleInterpolation(std::move(start),
std::move(end),
CSSPropertyBackgroundColor) {}
};
const double duration = 1.0;
} // namespace
class AnimationInterpolationEffectTest : public ::testing::Test {
protected:
InterpolableValue* interpolationValue(
LegacyStyleInterpolation& interpolation) {
return interpolation.getCachedValueForTesting();
}
double getInterpolableNumber(PassRefPtr<Interpolation> value) {
LegacyStyleInterpolation& interpolation =
toLegacyStyleInterpolation(*value.get());
return toInterpolableNumber(interpolationValue(interpolation))->value();
}
};
TEST_F(AnimationInterpolationEffectTest, SingleInterpolation) {
InterpolationEffect interpolationEffect;
interpolationEffect.addInterpolation(
SampleInterpolation::create(InterpolableNumber::create(0),
InterpolableNumber::create(10)),
RefPtr<TimingFunction>(), 0, 1, -1, 2);
Vector<RefPtr<Interpolation>> activeInterpolations;
interpolationEffect.getActiveInterpolations(-2, duration,
activeInterpolations);
EXPECT_EQ(0ul, activeInterpolations.size());
interpolationEffect.getActiveInterpolations(-0.5, duration,
activeInterpolations);
EXPECT_EQ(1ul, activeInterpolations.size());
EXPECT_EQ(-5, getInterpolableNumber(activeInterpolations.at(0)));
interpolationEffect.getActiveInterpolations(0.5, duration,
activeInterpolations);
EXPECT_EQ(1ul, activeInterpolations.size());
EXPECT_FLOAT_EQ(5, getInterpolableNumber(activeInterpolations.at(0)));
interpolationEffect.getActiveInterpolations(1.5, duration,
activeInterpolations);
EXPECT_EQ(1ul, activeInterpolations.size());
EXPECT_FLOAT_EQ(15, getInterpolableNumber(activeInterpolations.at(0)));
interpolationEffect.getActiveInterpolations(3, duration,
activeInterpolations);
EXPECT_EQ(0ul, activeInterpolations.size());
}
TEST_F(AnimationInterpolationEffectTest, MultipleInterpolations) {
InterpolationEffect interpolationEffect;
interpolationEffect.addInterpolation(
SampleInterpolation::create(InterpolableNumber::create(10),
InterpolableNumber::create(15)),
RefPtr<TimingFunction>(), 1, 2, 1, 3);
interpolationEffect.addInterpolation(
SampleInterpolation::create(InterpolableNumber::create(0),
InterpolableNumber::create(1)),
LinearTimingFunction::shared(), 0, 1, 0, 1);
interpolationEffect.addInterpolation(
SampleInterpolation::create(InterpolableNumber::create(1),
InterpolableNumber::create(6)),
CubicBezierTimingFunction::preset(
CubicBezierTimingFunction::EaseType::EASE),
0.5, 1.5, 0.5, 1.5);
Vector<RefPtr<Interpolation>> activeInterpolations;
interpolationEffect.getActiveInterpolations(-0.5, duration,
activeInterpolations);
EXPECT_EQ(0ul, activeInterpolations.size());
interpolationEffect.getActiveInterpolations(0, duration,
activeInterpolations);
EXPECT_EQ(1ul, activeInterpolations.size());
EXPECT_FLOAT_EQ(0, getInterpolableNumber(activeInterpolations.at(0)));
interpolationEffect.getActiveInterpolations(0.5, duration,
activeInterpolations);
EXPECT_EQ(2ul, activeInterpolations.size());
EXPECT_FLOAT_EQ(0.5f, getInterpolableNumber(activeInterpolations.at(0)));
EXPECT_FLOAT_EQ(1, getInterpolableNumber(activeInterpolations.at(1)));
interpolationEffect.getActiveInterpolations(1, duration,
activeInterpolations);
EXPECT_EQ(2ul, activeInterpolations.size());
EXPECT_FLOAT_EQ(10, getInterpolableNumber(activeInterpolations.at(0)));
EXPECT_FLOAT_EQ(5.0282884f,
getInterpolableNumber(activeInterpolations.at(1)));
interpolationEffect.getActiveInterpolations(1, duration * 1000,
activeInterpolations);
EXPECT_EQ(2ul, activeInterpolations.size());
EXPECT_FLOAT_EQ(10, getInterpolableNumber(activeInterpolations.at(0)));
EXPECT_FLOAT_EQ(5.0120168f,
getInterpolableNumber(activeInterpolations.at(1)));
interpolationEffect.getActiveInterpolations(1.5, duration,
activeInterpolations);
EXPECT_EQ(1ul, activeInterpolations.size());
EXPECT_FLOAT_EQ(12.5f, getInterpolableNumber(activeInterpolations.at(0)));
interpolationEffect.getActiveInterpolations(2, duration,
activeInterpolations);
EXPECT_EQ(1ul, activeInterpolations.size());
EXPECT_FLOAT_EQ(15, getInterpolableNumber(activeInterpolations.at(0)));
}
} // namespace blink
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