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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/InterpolableValue.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) {}
};
} // namespace
class AnimationInterpolableValueTest : public ::testing::Test {
protected:
InterpolableValue* interpolationValue(
LegacyStyleInterpolation& interpolation) {
return interpolation.getCachedValueForTesting();
}
double interpolateNumbers(double a, double b, double progress) {
RefPtr<LegacyStyleInterpolation> i = SampleInterpolation::create(
InterpolableNumber::create(a), InterpolableNumber::create(b));
i->interpolate(0, progress);
return toInterpolableNumber(interpolationValue(*i.get()))->value();
}
void scaleAndAdd(InterpolableValue& base,
double scale,
const InterpolableValue& add) {
base.scaleAndAdd(scale, add);
}
PassRefPtr<LegacyStyleInterpolation> interpolateLists(
std::unique_ptr<InterpolableList> listA,
std::unique_ptr<InterpolableList> listB,
double progress) {
RefPtr<LegacyStyleInterpolation> i =
SampleInterpolation::create(std::move(listA), std::move(listB));
i->interpolate(0, progress);
return i;
}
};
TEST_F(AnimationInterpolableValueTest, InterpolateNumbers) {
EXPECT_FLOAT_EQ(126, interpolateNumbers(42, 0, -2));
EXPECT_FLOAT_EQ(42, interpolateNumbers(42, 0, 0));
EXPECT_FLOAT_EQ(29.4f, interpolateNumbers(42, 0, 0.3));
EXPECT_FLOAT_EQ(21, interpolateNumbers(42, 0, 0.5));
EXPECT_FLOAT_EQ(0, interpolateNumbers(42, 0, 1));
EXPECT_FLOAT_EQ(-21, interpolateNumbers(42, 0, 1.5));
}
TEST_F(AnimationInterpolableValueTest, SimpleList) {
std::unique_ptr<InterpolableList> listA = InterpolableList::create(3);
listA->set(0, InterpolableNumber::create(0));
listA->set(1, InterpolableNumber::create(42));
listA->set(2, InterpolableNumber::create(20.5));
std::unique_ptr<InterpolableList> listB = InterpolableList::create(3);
listB->set(0, InterpolableNumber::create(100));
listB->set(1, InterpolableNumber::create(-200));
listB->set(2, InterpolableNumber::create(300));
RefPtr<LegacyStyleInterpolation> i =
interpolateLists(std::move(listA), std::move(listB), 0.3);
InterpolableList* outList = toInterpolableList(interpolationValue(*i.get()));
EXPECT_FLOAT_EQ(30, toInterpolableNumber(outList->get(0))->value());
EXPECT_FLOAT_EQ(-30.6f, toInterpolableNumber(outList->get(1))->value());
EXPECT_FLOAT_EQ(104.35f, toInterpolableNumber(outList->get(2))->value());
}
TEST_F(AnimationInterpolableValueTest, NestedList) {
std::unique_ptr<InterpolableList> listA = InterpolableList::create(3);
listA->set(0, InterpolableNumber::create(0));
std::unique_ptr<InterpolableList> subListA = InterpolableList::create(1);
subListA->set(0, InterpolableNumber::create(100));
listA->set(1, std::move(subListA));
listA->set(2, InterpolableNumber::create(0));
std::unique_ptr<InterpolableList> listB = InterpolableList::create(3);
listB->set(0, InterpolableNumber::create(100));
std::unique_ptr<InterpolableList> subListB = InterpolableList::create(1);
subListB->set(0, InterpolableNumber::create(50));
listB->set(1, std::move(subListB));
listB->set(2, InterpolableNumber::create(1));
RefPtr<LegacyStyleInterpolation> i =
interpolateLists(std::move(listA), std::move(listB), 0.5);
InterpolableList* outList = toInterpolableList(interpolationValue(*i.get()));
EXPECT_FLOAT_EQ(50, toInterpolableNumber(outList->get(0))->value());
EXPECT_FLOAT_EQ(
75, toInterpolableNumber(toInterpolableList(outList->get(1))->get(0))
->value());
EXPECT_FLOAT_EQ(0.5, toInterpolableNumber(outList->get(2))->value());
}
TEST_F(AnimationInterpolableValueTest, ScaleAndAddNumbers) {
std::unique_ptr<InterpolableNumber> base = InterpolableNumber::create(10);
scaleAndAdd(*base, 2, *InterpolableNumber::create(1));
EXPECT_FLOAT_EQ(21, base->value());
base = InterpolableNumber::create(10);
scaleAndAdd(*base, 0, *InterpolableNumber::create(5));
EXPECT_FLOAT_EQ(5, base->value());
base = InterpolableNumber::create(10);
scaleAndAdd(*base, -1, *InterpolableNumber::create(8));
EXPECT_FLOAT_EQ(-2, base->value());
}
TEST_F(AnimationInterpolableValueTest, ScaleAndAddLists) {
std::unique_ptr<InterpolableList> baseList = InterpolableList::create(3);
baseList->set(0, InterpolableNumber::create(5));
baseList->set(1, InterpolableNumber::create(10));
baseList->set(2, InterpolableNumber::create(15));
std::unique_ptr<InterpolableList> addList = InterpolableList::create(3);
addList->set(0, InterpolableNumber::create(1));
addList->set(1, InterpolableNumber::create(2));
addList->set(2, InterpolableNumber::create(3));
scaleAndAdd(*baseList, 2, *addList);
EXPECT_FLOAT_EQ(11, toInterpolableNumber(baseList->get(0))->value());
EXPECT_FLOAT_EQ(22, toInterpolableNumber(baseList->get(1))->value());
EXPECT_FLOAT_EQ(33, toInterpolableNumber(baseList->get(2))->value());
}
} // namespace blink
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