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/*
* 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "platform/animation/UnitBezier.h"
#include <gtest/gtest.h>
using namespace WebCore;
namespace {
TEST(UnitBezierTest, BasicUse)
{
UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
EXPECT_EQ(0.875, bezier.solve(0.5, 0.005));
}
TEST(UnitBezierTest, Overshoot)
{
UnitBezier bezier(0.5, 2.0, 0.5, 2.0);
EXPECT_EQ(1.625, bezier.solve(0.5, 0.005));
}
TEST(UnitBezierTest, Undershoot)
{
UnitBezier bezier(0.5, -1.0, 0.5, -1.0);
EXPECT_EQ(-0.625, bezier.solve(0.5, 0.005));
}
TEST(UnitBezierTest, InputAtEdgeOfRange)
{
UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
EXPECT_EQ(0.0, bezier.solve(0.0, 0.005));
EXPECT_EQ(1.0, bezier.solve(1.0, 0.005));
}
TEST(UnitBezierTest, InputOutOfRange)
{
UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
EXPECT_EQ(-2.0, bezier.solve(-1.0, 0.005));
EXPECT_EQ(1.0, bezier.solve(2.0, 0.005));
}
TEST(UnitBezierTest, InputOutOfRangeLargeEpsilon)
{
UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
EXPECT_EQ(-2.0, bezier.solve(-1.0, 1.0));
EXPECT_EQ(1.0, bezier.solve(2.0, 1.0));
}
TEST(UnitBezierTest, InputOutOfRangeCoincidentEndpoints)
{
UnitBezier bezier(0.0, 0.0, 1.0, 1.0);
EXPECT_EQ(-1.0, bezier.solve(-1.0, 0.005));
EXPECT_EQ(2.0, bezier.solve(2.0, 0.005));
}
TEST(UnitBezierTest, InputOutOfRangeVerticalGradient)
{
UnitBezier bezier(0.0, 1.0, 1.0, 0.0);
EXPECT_EQ(0.0, bezier.solve(-1.0, 0.005));
EXPECT_EQ(1.0, bezier.solve(2.0, 0.005));
}
TEST(UnitBezierTest, InputOutOfRangeDistinctEndpoints)
{
UnitBezier bezier(0.1, 0.2, 0.8, 0.8);
EXPECT_EQ(-2.0, bezier.solve(-1.0, 0.005));
EXPECT_EQ(2.0, bezier.solve(2.0, 0.005));
}
} // namespace
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