Tools/TestWebKitAPI/Tests/WebCore/ColorTests.cpp - WebKit - Git at Google

 /*
  * Copyright (C) 2011-2021 Apple 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 "Test.h"
 #include "WTFStringUtilities.h"
 #include <WebCore/Color.h>
 #include <WebCore/ColorConversion.h>
 #include <WebCore/ColorSerialization.h>
 #include <WebCore/ColorTypes.h>
 #include <wtf/MathExtras.h>

 using namespace WebCore;

 namespace TestWebKitAPI {

 TEST(Color, RGBToHSL_White)
 {
     Color color = Color::white;

     auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

     EXPECT_FLOAT_EQ(0, hslaColor.hue);
     EXPECT_FLOAT_EQ(0, hslaColor.saturation);
     EXPECT_FLOAT_EQ(100, hslaColor.lightness);

     EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

     auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
     EXPECT_EQ(color, roundTrippedColor);
 }

 TEST(Color, RGBToHSL_Black)
 {
     Color color = Color::black;

     auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

     EXPECT_FLOAT_EQ(0, hslaColor.hue);
     EXPECT_FLOAT_EQ(0, hslaColor.saturation);
     EXPECT_FLOAT_EQ(0, hslaColor.lightness);

     EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

     auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
     EXPECT_EQ(color, roundTrippedColor);
 }

 TEST(Color, RGBToHSL_Red)
 {
     Color color = Color::red;

     auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

     EXPECT_FLOAT_EQ(0, hslaColor.hue);
     EXPECT_FLOAT_EQ(100, hslaColor.saturation);
     EXPECT_FLOAT_EQ(50, hslaColor.lightness);

     EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

     auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
     EXPECT_EQ(color, roundTrippedColor);
 }

 TEST(Color, RGBToHSL_Green)
 {
     Color color = Color::green;

     auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

     EXPECT_FLOAT_EQ(120, hslaColor.hue);
     EXPECT_FLOAT_EQ(100, hslaColor.saturation);
     EXPECT_FLOAT_EQ(50, hslaColor.lightness);

     EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

     auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
     EXPECT_EQ(color, roundTrippedColor);
 }

 TEST(Color, RGBToHSL_Blue)
 {
     Color color = Color::blue;

     auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

     EXPECT_FLOAT_EQ(240, hslaColor.hue);
     EXPECT_FLOAT_EQ(100, hslaColor.saturation);
     EXPECT_FLOAT_EQ(50, hslaColor.lightness);

     EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

     auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
     EXPECT_EQ(color, roundTrippedColor);
 }

 TEST(Color, RGBToHSL_DarkGray)
 {
     Color color = Color::darkGray;

     auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

     EXPECT_FLOAT_EQ(0, hslaColor.hue);
     EXPECT_FLOAT_EQ(0, hslaColor.saturation);
     EXPECT_FLOAT_EQ(50.196083, hslaColor.lightness);

     EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

     auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
     EXPECT_EQ(color, roundTrippedColor);
 }

 TEST(Color, RGBToHSL_Gray)
 {
     Color color = Color::gray;

     auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

     EXPECT_FLOAT_EQ(0, hslaColor.hue);
     EXPECT_FLOAT_EQ(0, hslaColor.saturation);
     EXPECT_FLOAT_EQ(62.745102, hslaColor.lightness);

     EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

     auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
     EXPECT_EQ(color, roundTrippedColor);
 }

 TEST(Color, RGBToHSL_LightGray)
 {
     Color color = Color::lightGray;

     auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

     EXPECT_FLOAT_EQ(0, hslaColor.hue);
     EXPECT_FLOAT_EQ(0, hslaColor.saturation);
     EXPECT_FLOAT_EQ(75.294121, hslaColor.lightness);

     EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

     auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
     EXPECT_EQ(color, roundTrippedColor);
 }

 TEST(Color, Validity)
 {
     Color invalidColor;
     EXPECT_FALSE(invalidColor.isValid());

     Color otherInvalidColor = invalidColor;
     EXPECT_FALSE(otherInvalidColor.isValid());

     Color validColor = Color::red;
     EXPECT_TRUE(validColor.isValid());

     Color otherValidColor = validColor;
     EXPECT_TRUE(otherValidColor.isValid());

     validColor = SRGBA<uint8_t> { 1, 2, 3, 4 };
     EXPECT_TRUE(validColor.isValid());
     auto validColorComponents = validColor.toSRGBALossy<uint8_t>();
     EXPECT_EQ(validColorComponents.red, 1);
     EXPECT_EQ(validColorComponents.green, 2);
     EXPECT_EQ(validColorComponents.blue, 3);
     EXPECT_EQ(validColorComponents.alpha, 4);

     Color yetAnotherValidColor(WTFMove(validColor));
     EXPECT_TRUE(yetAnotherValidColor.isValid());
     auto yetAnotherValidColorComponents = yetAnotherValidColor.toSRGBALossy<uint8_t>();
     EXPECT_EQ(yetAnotherValidColorComponents.red, 1);
     EXPECT_EQ(yetAnotherValidColorComponents.green, 2);
     EXPECT_EQ(yetAnotherValidColorComponents.blue, 3);
     EXPECT_EQ(yetAnotherValidColorComponents.alpha, 4);

     otherValidColor = WTFMove(yetAnotherValidColor);
     EXPECT_TRUE(otherValidColor.isValid());
     auto otherValidColorComponents = otherValidColor.toSRGBALossy<uint8_t>();
     EXPECT_EQ(otherValidColorComponents.red, 1);
     EXPECT_EQ(otherValidColorComponents.green, 2);
     EXPECT_EQ(otherValidColorComponents.blue, 3);
     EXPECT_EQ(otherValidColorComponents.alpha, 4);
 }

 TEST(Color, Luminance)
 {
     EXPECT_FLOAT_EQ(Color(Color::black).luminance(), 0);
     EXPECT_FLOAT_EQ(Color(Color::white).luminance(), 1);

     auto cComponents = SRGBA<uint8_t> { 85, 90, 160 };
     EXPECT_FLOAT_EQ(Color(cComponents).luminance(), 0.11781455);

     EXPECT_EQ(cComponents.red, 85);
     EXPECT_EQ(cComponents.green, 90);
     EXPECT_EQ(cComponents.blue, 160);

     auto cLigtened = Color(cComponents).lightened().toSRGBALossy<uint8_t>();
     EXPECT_FLOAT_EQ(Color(cLigtened).luminance(), 0.291682);
     EXPECT_EQ(cLigtened.red, 130);
     EXPECT_EQ(cLigtened.green, 137);
     EXPECT_EQ(cLigtened.blue, 244);

     auto cDarkened = Color(cComponents).darkened().toSRGBALossy<uint8_t>();
     EXPECT_FLOAT_EQ(Color(cDarkened).luminance(), 0.027006242);
     EXPECT_EQ(cDarkened.red, 40);
     EXPECT_EQ(cDarkened.green, 43);
     EXPECT_EQ(cDarkened.blue, 76);
 }

 TEST(Color, Constructor)
 {
     Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };

     auto [colorSpace, components] = c1.colorSpaceAndComponents();
     auto [r, g, b, alpha] = components;

     EXPECT_FLOAT_EQ(1.0, r);
     EXPECT_FLOAT_EQ(0.5, g);
     EXPECT_FLOAT_EQ(0.25, b);
     EXPECT_FLOAT_EQ(1.0, alpha);
     EXPECT_EQ(serializationForCSS(c1), "color(display-p3 1 0.5 0.25)");
 }

 TEST(Color, CopyConstructor)
 {
     Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
     Color c2(c1);

     auto [colorSpace, components] = c2.colorSpaceAndComponents();
     auto [r, g, b, alpha] = components;

     EXPECT_FLOAT_EQ(1.0, r);
     EXPECT_FLOAT_EQ(0.5, g);
     EXPECT_FLOAT_EQ(0.25, b);
     EXPECT_FLOAT_EQ(1.0, alpha);
     EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
 }

 TEST(Color, Assignment)
 {
     Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
     Color c2 = c1;

     auto [colorSpace, components] = c2.colorSpaceAndComponents();
     auto [r, g, b, alpha] = components;

     EXPECT_FLOAT_EQ(1.0, r);
     EXPECT_FLOAT_EQ(0.5, g);
     EXPECT_FLOAT_EQ(0.25, b);
     EXPECT_FLOAT_EQ(1.0, alpha);
     EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
 }

 TEST(Color, Equality)
 {
     {
         Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
         Color c2 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
         EXPECT_EQ(c1, c2);
     }

     {
         Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
         Color c2 { SRGBA<float> { 1.0, 0.5, 0.25, 1.0 } };
         EXPECT_NE(c1, c2);
     }

     auto componentBytes = SRGBA<uint8_t> { 255, 128, 63, 127 };
     Color rgb1 { convertColor<SRGBA<float>>(componentBytes) };
     Color rgb2 { componentBytes };
     EXPECT_NE(rgb1, rgb2);
     EXPECT_NE(rgb2, rgb1);
 }

 TEST(Color, Hash)
 {
     {
         Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
         Color c2 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
         EXPECT_EQ(c1.hash(), c2.hash());
     }

     {
         Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
         Color c2 { SRGBA<float> { 1.0, 0.5, 0.25, 1.0 } };
         EXPECT_NE(c1.hash(), c2.hash());
     }

     auto componentBytes = SRGBA<uint8_t> { 255, 128, 63, 127 };
     Color rgb1 { convertColor<SRGBA<float>>(componentBytes) };
     Color rgb2 { componentBytes };
     EXPECT_NE(rgb1.hash(), rgb2.hash());
 }

 TEST(Color, MoveConstructor)
 {
     Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
     Color c2(WTFMove(c1));

     // We should have moved the out of line color pointer into c2,
     // and set c1 to invalid so that it doesn't cause deletion.
     EXPECT_FALSE(c1.isValid());

     auto [colorSpace, components] = c2.colorSpaceAndComponents();
     EXPECT_EQ(colorSpace, ColorSpace::DisplayP3);

     auto [r, g, b, alpha] = components;

     EXPECT_FLOAT_EQ(1.0, r);
     EXPECT_FLOAT_EQ(0.5, g);
     EXPECT_FLOAT_EQ(0.25, b);
     EXPECT_FLOAT_EQ(1.0, alpha);
     EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
 }

 TEST(Color, MoveAssignment)
 {
     Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
     Color c2 = WTFMove(c1);

     // We should have moved the out of line color pointer into c2,
     // and set c1 to invalid so that it doesn't cause deletion.
     EXPECT_FALSE(c1.isValid());

     auto [colorSpace, components] = c2.colorSpaceAndComponents();
     EXPECT_EQ(colorSpace, ColorSpace::DisplayP3);

     auto [r, g, b, alpha] = components;

     EXPECT_FLOAT_EQ(1.0, r);
     EXPECT_FLOAT_EQ(0.5, g);
     EXPECT_FLOAT_EQ(0.25, b);
     EXPECT_FLOAT_EQ(1.0, alpha);
     EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
 }

 Color makeColor()
 {
     return Color { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
 }

 TEST(Color, ReturnValues)
 {
     Color c2 = makeColor();
     EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
 }

 TEST(Color, P3ConversionToSRGB)
 {
     Color p3Color { DisplayP3<float> { 1.0, 0.5, 0.25, 0.75 } };
     auto sRGBAColor = p3Color.toSRGBALossy<float>();
     EXPECT_FLOAT_EQ(sRGBAColor.red, 1.0f);
     EXPECT_FLOAT_EQ(sRGBAColor.green, 0.46253282f);
     EXPECT_FLOAT_EQ(sRGBAColor.blue, 0.14912748f);
     EXPECT_FLOAT_EQ(sRGBAColor.alpha, 0.75f);
 }

 TEST(Color, LinearSRGBConversionToSRGB)
 {
     Color linearSRGBAColor { LinearSRGBA<float> { 1.0, 0.5, 0.25, 0.75 } };
     auto sRGBAColor = linearSRGBAColor.toSRGBALossy<float>();
     EXPECT_FLOAT_EQ(sRGBAColor.red, 1.0f);
     EXPECT_FLOAT_EQ(sRGBAColor.green, 0.735356927f);
     EXPECT_FLOAT_EQ(sRGBAColor.blue, 0.537098706f);
     EXPECT_FLOAT_EQ(sRGBAColor.alpha, 0.75f);
 }

 TEST(Color, ColorWithAlphaMultipliedBy)
 {
     Color color { SRGBA<float> { 0., 0., 1., 0.6 } };

     {
         Color colorWithAlphaMultipliedBy = color.colorWithAlphaMultipliedBy(1.);
         EXPECT_EQ(color, colorWithAlphaMultipliedBy);
     }

     {
         Color colorWithAlphaMultipliedBy = color.colorWithAlphaMultipliedBy(0.5);
         auto [colorSpace, components] = colorWithAlphaMultipliedBy.colorSpaceAndComponents();
         EXPECT_EQ(colorSpace, ColorSpace::SRGB);
         auto [r, g, b, a] = components;
         EXPECT_FLOAT_EQ(r, 0.);
         EXPECT_FLOAT_EQ(g, 0.);
         EXPECT_FLOAT_EQ(b, 1.);
         EXPECT_FLOAT_EQ(a, 0.3);
     }

     {
         Color colorWithAlphaMultipliedBy = color.colorWithAlphaMultipliedBy(0.);
         auto [colorSpace, components] = colorWithAlphaMultipliedBy.colorSpaceAndComponents();
         EXPECT_EQ(colorSpace, ColorSpace::SRGB);
         auto [r, g, b, a] = components;
         EXPECT_FLOAT_EQ(r, 0.);
         EXPECT_FLOAT_EQ(g, 0.);
         EXPECT_FLOAT_EQ(b, 1.);
         EXPECT_FLOAT_EQ(a, 0.);
     }
 }

 } // namespace TestWebKitAPI
	/*
	* Copyright (C) 2011-2021 Apple 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 "Test.h"
	#include "WTFStringUtilities.h"
	#include <WebCore/Color.h>
	#include <WebCore/ColorConversion.h>
	#include <WebCore/ColorSerialization.h>
	#include <WebCore/ColorTypes.h>
	#include <wtf/MathExtras.h>

	using namespace WebCore;

	namespace TestWebKitAPI {

	TEST(Color, RGBToHSL_White)
	{
	Color color = Color::white;

	auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

	EXPECT_FLOAT_EQ(0, hslaColor.hue);
	EXPECT_FLOAT_EQ(0, hslaColor.saturation);
	EXPECT_FLOAT_EQ(100, hslaColor.lightness);

	EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

	auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
	EXPECT_EQ(color, roundTrippedColor);
	}

	TEST(Color, RGBToHSL_Black)
	{
	Color color = Color::black;

	auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

	EXPECT_FLOAT_EQ(0, hslaColor.hue);
	EXPECT_FLOAT_EQ(0, hslaColor.saturation);
	EXPECT_FLOAT_EQ(0, hslaColor.lightness);

	EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

	auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
	EXPECT_EQ(color, roundTrippedColor);
	}

	TEST(Color, RGBToHSL_Red)
	{
	Color color = Color::red;

	auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

	EXPECT_FLOAT_EQ(0, hslaColor.hue);
	EXPECT_FLOAT_EQ(100, hslaColor.saturation);
	EXPECT_FLOAT_EQ(50, hslaColor.lightness);

	EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

	auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
	EXPECT_EQ(color, roundTrippedColor);
	}

	TEST(Color, RGBToHSL_Green)
	{
	Color color = Color::green;

	auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

	EXPECT_FLOAT_EQ(120, hslaColor.hue);
	EXPECT_FLOAT_EQ(100, hslaColor.saturation);
	EXPECT_FLOAT_EQ(50, hslaColor.lightness);

	EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

	auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
	EXPECT_EQ(color, roundTrippedColor);
	}

	TEST(Color, RGBToHSL_Blue)
	{
	Color color = Color::blue;

	auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

	EXPECT_FLOAT_EQ(240, hslaColor.hue);
	EXPECT_FLOAT_EQ(100, hslaColor.saturation);
	EXPECT_FLOAT_EQ(50, hslaColor.lightness);

	EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

	auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
	EXPECT_EQ(color, roundTrippedColor);
	}

	TEST(Color, RGBToHSL_DarkGray)
	{
	Color color = Color::darkGray;

	auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

	EXPECT_FLOAT_EQ(0, hslaColor.hue);
	EXPECT_FLOAT_EQ(0, hslaColor.saturation);
	EXPECT_FLOAT_EQ(50.196083, hslaColor.lightness);

	EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

	auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
	EXPECT_EQ(color, roundTrippedColor);
	}

	TEST(Color, RGBToHSL_Gray)
	{
	Color color = Color::gray;

	auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

	EXPECT_FLOAT_EQ(0, hslaColor.hue);
	EXPECT_FLOAT_EQ(0, hslaColor.saturation);
	EXPECT_FLOAT_EQ(62.745102, hslaColor.lightness);

	EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

	auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
	EXPECT_EQ(color, roundTrippedColor);
	}

	TEST(Color, RGBToHSL_LightGray)
	{
	Color color = Color::lightGray;

	auto hslaColor = color.toColorTypeLossy<HSLA<float>>();

	EXPECT_FLOAT_EQ(0, hslaColor.hue);
	EXPECT_FLOAT_EQ(0, hslaColor.saturation);
	EXPECT_FLOAT_EQ(75.294121, hslaColor.lightness);

	EXPECT_FLOAT_EQ(color.lightness() * 100, hslaColor.lightness);

	auto roundTrippedColor = convertColor<SRGBA<uint8_t>>(hslaColor);
	EXPECT_EQ(color, roundTrippedColor);
	}

	TEST(Color, Validity)
	{
	Color invalidColor;
	EXPECT_FALSE(invalidColor.isValid());

	Color otherInvalidColor = invalidColor;
	EXPECT_FALSE(otherInvalidColor.isValid());

	Color validColor = Color::red;
	EXPECT_TRUE(validColor.isValid());

	Color otherValidColor = validColor;
	EXPECT_TRUE(otherValidColor.isValid());

	validColor = SRGBA<uint8_t> { 1, 2, 3, 4 };
	EXPECT_TRUE(validColor.isValid());
	auto validColorComponents = validColor.toSRGBALossy<uint8_t>();
	EXPECT_EQ(validColorComponents.red, 1);
	EXPECT_EQ(validColorComponents.green, 2);
	EXPECT_EQ(validColorComponents.blue, 3);
	EXPECT_EQ(validColorComponents.alpha, 4);

	Color yetAnotherValidColor(WTFMove(validColor));
	EXPECT_TRUE(yetAnotherValidColor.isValid());
	auto yetAnotherValidColorComponents = yetAnotherValidColor.toSRGBALossy<uint8_t>();
	EXPECT_EQ(yetAnotherValidColorComponents.red, 1);
	EXPECT_EQ(yetAnotherValidColorComponents.green, 2);
	EXPECT_EQ(yetAnotherValidColorComponents.blue, 3);
	EXPECT_EQ(yetAnotherValidColorComponents.alpha, 4);

	otherValidColor = WTFMove(yetAnotherValidColor);
	EXPECT_TRUE(otherValidColor.isValid());
	auto otherValidColorComponents = otherValidColor.toSRGBALossy<uint8_t>();
	EXPECT_EQ(otherValidColorComponents.red, 1);
	EXPECT_EQ(otherValidColorComponents.green, 2);
	EXPECT_EQ(otherValidColorComponents.blue, 3);
	EXPECT_EQ(otherValidColorComponents.alpha, 4);
	}

	TEST(Color, Luminance)
	{
	EXPECT_FLOAT_EQ(Color(Color::black).luminance(), 0);
	EXPECT_FLOAT_EQ(Color(Color::white).luminance(), 1);

	auto cComponents = SRGBA<uint8_t> { 85, 90, 160 };
	EXPECT_FLOAT_EQ(Color(cComponents).luminance(), 0.11781455);

	EXPECT_EQ(cComponents.red, 85);
	EXPECT_EQ(cComponents.green, 90);
	EXPECT_EQ(cComponents.blue, 160);

	auto cLigtened = Color(cComponents).lightened().toSRGBALossy<uint8_t>();
	EXPECT_FLOAT_EQ(Color(cLigtened).luminance(), 0.291682);
	EXPECT_EQ(cLigtened.red, 130);
	EXPECT_EQ(cLigtened.green, 137);
	EXPECT_EQ(cLigtened.blue, 244);

	auto cDarkened = Color(cComponents).darkened().toSRGBALossy<uint8_t>();
	EXPECT_FLOAT_EQ(Color(cDarkened).luminance(), 0.027006242);
	EXPECT_EQ(cDarkened.red, 40);
	EXPECT_EQ(cDarkened.green, 43);
	EXPECT_EQ(cDarkened.blue, 76);
	}

	TEST(Color, Constructor)
	{
	Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };

	auto [colorSpace, components] = c1.colorSpaceAndComponents();
	auto [r, g, b, alpha] = components;

	EXPECT_FLOAT_EQ(1.0, r);
	EXPECT_FLOAT_EQ(0.5, g);
	EXPECT_FLOAT_EQ(0.25, b);
	EXPECT_FLOAT_EQ(1.0, alpha);
	EXPECT_EQ(serializationForCSS(c1), "color(display-p3 1 0.5 0.25)");
	}

	TEST(Color, CopyConstructor)
	{
	Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	Color c2(c1);

	auto [colorSpace, components] = c2.colorSpaceAndComponents();
	auto [r, g, b, alpha] = components;

	EXPECT_FLOAT_EQ(1.0, r);
	EXPECT_FLOAT_EQ(0.5, g);
	EXPECT_FLOAT_EQ(0.25, b);
	EXPECT_FLOAT_EQ(1.0, alpha);
	EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
	}

	TEST(Color, Assignment)
	{
	Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	Color c2 = c1;

	auto [colorSpace, components] = c2.colorSpaceAndComponents();
	auto [r, g, b, alpha] = components;

	EXPECT_FLOAT_EQ(1.0, r);
	EXPECT_FLOAT_EQ(0.5, g);
	EXPECT_FLOAT_EQ(0.25, b);
	EXPECT_FLOAT_EQ(1.0, alpha);
	EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
	}

	TEST(Color, Equality)
	{
	{
	Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	Color c2 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	EXPECT_EQ(c1, c2);
	}

	{
	Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	Color c2 { SRGBA<float> { 1.0, 0.5, 0.25, 1.0 } };
	EXPECT_NE(c1, c2);
	}

	auto componentBytes = SRGBA<uint8_t> { 255, 128, 63, 127 };
	Color rgb1 { convertColor<SRGBA<float>>(componentBytes) };
	Color rgb2 { componentBytes };
	EXPECT_NE(rgb1, rgb2);
	EXPECT_NE(rgb2, rgb1);
	}

	TEST(Color, Hash)
	{
	{
	Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	Color c2 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	EXPECT_EQ(c1.hash(), c2.hash());
	}

	{
	Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	Color c2 { SRGBA<float> { 1.0, 0.5, 0.25, 1.0 } };
	EXPECT_NE(c1.hash(), c2.hash());
	}

	auto componentBytes = SRGBA<uint8_t> { 255, 128, 63, 127 };
	Color rgb1 { convertColor<SRGBA<float>>(componentBytes) };
	Color rgb2 { componentBytes };
	EXPECT_NE(rgb1.hash(), rgb2.hash());
	}

	TEST(Color, MoveConstructor)
	{
	Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	Color c2(WTFMove(c1));

	// We should have moved the out of line color pointer into c2,
	// and set c1 to invalid so that it doesn't cause deletion.
	EXPECT_FALSE(c1.isValid());

	auto [colorSpace, components] = c2.colorSpaceAndComponents();
	EXPECT_EQ(colorSpace, ColorSpace::DisplayP3);

	auto [r, g, b, alpha] = components;

	EXPECT_FLOAT_EQ(1.0, r);
	EXPECT_FLOAT_EQ(0.5, g);
	EXPECT_FLOAT_EQ(0.25, b);
	EXPECT_FLOAT_EQ(1.0, alpha);
	EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
	}

	TEST(Color, MoveAssignment)
	{
	Color c1 { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	Color c2 = WTFMove(c1);

	// We should have moved the out of line color pointer into c2,
	// and set c1 to invalid so that it doesn't cause deletion.
	EXPECT_FALSE(c1.isValid());

	auto [colorSpace, components] = c2.colorSpaceAndComponents();
	EXPECT_EQ(colorSpace, ColorSpace::DisplayP3);

	auto [r, g, b, alpha] = components;

	EXPECT_FLOAT_EQ(1.0, r);
	EXPECT_FLOAT_EQ(0.5, g);
	EXPECT_FLOAT_EQ(0.25, b);
	EXPECT_FLOAT_EQ(1.0, alpha);
	EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
	}

	Color makeColor()
	{
	return Color { DisplayP3<float> { 1.0, 0.5, 0.25, 1.0 } };
	}

	TEST(Color, ReturnValues)
	{
	Color c2 = makeColor();
	EXPECT_EQ(serializationForCSS(c2), "color(display-p3 1 0.5 0.25)");
	}

	TEST(Color, P3ConversionToSRGB)
	{
	Color p3Color { DisplayP3<float> { 1.0, 0.5, 0.25, 0.75 } };
	auto sRGBAColor = p3Color.toSRGBALossy<float>();
	EXPECT_FLOAT_EQ(sRGBAColor.red, 1.0f);
	EXPECT_FLOAT_EQ(sRGBAColor.green, 0.46253282f);
	EXPECT_FLOAT_EQ(sRGBAColor.blue, 0.14912748f);
	EXPECT_FLOAT_EQ(sRGBAColor.alpha, 0.75f);
	}

	TEST(Color, LinearSRGBConversionToSRGB)
	{
	Color linearSRGBAColor { LinearSRGBA<float> { 1.0, 0.5, 0.25, 0.75 } };
	auto sRGBAColor = linearSRGBAColor.toSRGBALossy<float>();
	EXPECT_FLOAT_EQ(sRGBAColor.red, 1.0f);
	EXPECT_FLOAT_EQ(sRGBAColor.green, 0.735356927f);
	EXPECT_FLOAT_EQ(sRGBAColor.blue, 0.537098706f);
	EXPECT_FLOAT_EQ(sRGBAColor.alpha, 0.75f);
	}

	TEST(Color, ColorWithAlphaMultipliedBy)
	{
	Color color { SRGBA<float> { 0., 0., 1., 0.6 } };

	{
	Color colorWithAlphaMultipliedBy = color.colorWithAlphaMultipliedBy(1.);
	EXPECT_EQ(color, colorWithAlphaMultipliedBy);
	}

	{
	Color colorWithAlphaMultipliedBy = color.colorWithAlphaMultipliedBy(0.5);
	auto [colorSpace, components] = colorWithAlphaMultipliedBy.colorSpaceAndComponents();
	EXPECT_EQ(colorSpace, ColorSpace::SRGB);
	auto [r, g, b, a] = components;
	EXPECT_FLOAT_EQ(r, 0.);
	EXPECT_FLOAT_EQ(g, 0.);
	EXPECT_FLOAT_EQ(b, 1.);
	EXPECT_FLOAT_EQ(a, 0.3);
	}

	{
	Color colorWithAlphaMultipliedBy = color.colorWithAlphaMultipliedBy(0.);
	auto [colorSpace, components] = colorWithAlphaMultipliedBy.colorSpaceAndComponents();
	EXPECT_EQ(colorSpace, ColorSpace::SRGB);
	auto [r, g, b, a] = components;
	EXPECT_FLOAT_EQ(r, 0.);
	EXPECT_FLOAT_EQ(g, 0.);
	EXPECT_FLOAT_EQ(b, 1.);
	EXPECT_FLOAT_EQ(a, 0.);
	}
	}

	} // namespace TestWebKitAPI