Add CIeLuv tests

Author: JimBobSquarePants

tests/ImageSharp.Tests/ColorProfiles/CieLuvAndLmsConversionTests.cs

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+// Copyright (c) Six Labors.
+// Licensed under the Six Labors Split License.
+
+using SixLabors.ImageSharp.ColorProfiles;
+
+namespace SixLabors.ImageSharp.Tests.ColorProfiles;
+
+/// <summary>
+/// Tests <see cref="CieLuv"/>-<see cref="Lms"/> conversions.
+/// </summary>
+public class CieLuvAndLmsConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0002F);
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(36.0555, 93.6901, 10.01514, 0.164352, 0.03267485, 0.0483408)]
+    public void Convert_CieLuv_to_Lms(float l, float u, float v, float l2, float m, float s)
+    {
+        // Arrange
+        CieLuv input = new(l, u, v);
+        Lms expected = new(l2, m, s);
+        ColorConversionOptions options = new() { WhitePoint = Illuminants.D65, TargetWhitePoint = Illuminants.D65 };
+        ColorProfileConverter converter = new(options);
+
+        Span<CieLuv> inputSpan = new CieLuv[5];
+        inputSpan.Fill(input);
+
+        Span<Lms> actualSpan = new Lms[5];
+
+        // Act
+        Lms actual = converter.Convert<CieLuv, Lms>(input);
+        converter.Convert<CieLuv, Lms>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(0.164352, 0.03267485, 0.0483408, 36.0555, 93.69009, 10.01514)]
+    public void Convert_Lms_to_CieLuv(float l2, float m, float s, float l, float u, float v)
+    {
+        // Arrange
+        Lms input = new(l2, m, s);
+        CieLuv expected = new(l, u, v);
+        ColorConversionOptions options = new() { WhitePoint = Illuminants.D65, TargetWhitePoint = Illuminants.D65 };
+        ColorProfileConverter converter = new(options);
+
+        Span<Lms> inputSpan = new Lms[5];
+        inputSpan.Fill(input);
+
+        Span<CieLuv> actualSpan = new CieLuv[5];
+
+        // Act
+        CieLuv actual = converter.Convert<Lms, CieLuv>(input);
+        converter.Convert<Lms, CieLuv>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}

tests/ImageSharp.Tests/ColorProfiles/CieLuvAndRgbConversionTests.cs

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+// Copyright (c) Six Labors.
+// Licensed under the Six Labors Split License.
+
+using SixLabors.ImageSharp.ColorProfiles;
+
+namespace SixLabors.ImageSharp.Tests.ColorProfiles;
+
+/// <summary>
+/// Tests <see cref="CieLuv"/>-<see cref="Rgb"/> conversions.
+/// </summary>
+public class CieLuvAndRgbConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0002F);
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(36.0555, 93.6901, 10.01514, 0.6444615, 0.1086071, 0.2213444)]
+    public void Convert_CieLuv_to_Rgb(float l, float u, float v, float r, float g, float b)
+    {
+        // Arrange
+        CieLuv input = new(l, u, v);
+        Rgb expected = new(r, g, b);
+        ColorConversionOptions options = new() { WhitePoint = Illuminants.D65, TargetWhitePoint = Illuminants.D65 };
+        ColorProfileConverter converter = new(options);
+
+        Span<CieLuv> inputSpan = new CieLuv[5];
+        inputSpan.Fill(input);
+
+        Span<Rgb> actualSpan = new Rgb[5];
+
+        // Act
+        Rgb actual = converter.Convert<CieLuv, Rgb>(input);
+        converter.Convert<CieLuv, Rgb>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(0.6444615, 0.1086071, 0.2213444, 36.0555, 93.69012, 10.01514)]
+    public void Convert_Rgb_to_CieLuv(float r, float g, float b, float l, float u, float v)
+    {
+        // Arrange
+        Rgb input = new(r, g, b);
+        CieLuv expected = new(l, u, v);
+        ColorConversionOptions options = new() { WhitePoint = Illuminants.D65, TargetWhitePoint = Illuminants.D65 };
+        ColorProfileConverter converter = new(options);
+
+        Span<Rgb> inputSpan = new Rgb[5];
+        inputSpan.Fill(input);
+
+        Span<CieLuv> actualSpan = new CieLuv[5];
+
+        // Act
+        CieLuv actual = converter.Convert<Rgb, CieLuv>(input);
+        converter.Convert<Rgb, CieLuv>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}

tests/ImageSharp.Tests/ColorProfiles/CieLuvAndYCbCrConversionTests.cs

@@ -0,0 +1,72 @@
+// Copyright (c) Six Labors.
+// Licensed under the Six Labors Split License.
+
+using SixLabors.ImageSharp.ColorProfiles;
+
+namespace SixLabors.ImageSharp.Tests.ColorProfiles;
+
+/// <summary>
+/// Tests <see cref="CieLuv"/>-<see cref="YCbCr"/> conversions.
+/// </summary>
+public class CieLuvAndYCbCrConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0002F);
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 128, 128)]
+    [InlineData(36.0555, 93.6901, 10.01514, 71.8283, 119.3174, 193.9839)]
+    public void Convert_CieLuv_to_YCbCr(float l, float u, float v, float y, float cb, float cr)
+    {
+        // Arrange
+        CieLuv input = new(l, u, v);
+        YCbCr expected = new(y, cb, cr);
+        ColorConversionOptions options = new() { WhitePoint = Illuminants.D65, TargetWhitePoint = Illuminants.D65 };
+        ColorProfileConverter converter = new(options);
+
+        Span<CieLuv> inputSpan = new CieLuv[5];
+        inputSpan.Fill(input);
+
+        Span<YCbCr> actualSpan = new YCbCr[5];
+
+        // Act
+        YCbCr actual = converter.Convert<CieLuv, YCbCr>(input);
+        converter.Convert<CieLuv, YCbCr>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+
+    [Theory]
+    [InlineData(0, 128, 128, 0, 0, 0)]
+    [InlineData(71.8283, 119.3174, 193.9839, 36.00565, 93.44593, 10.2234)]
+    public void Convert_YCbCr_to_CieLuv(float y, float cb, float cr, float l, float u, float v)
+    {
+        // Arrange
+        YCbCr input = new(y, cb, cr);
+        CieLuv expected = new(l, u, v);
+        ColorConversionOptions options = new() { WhitePoint = Illuminants.D65, TargetWhitePoint = Illuminants.D65 };
+        ColorProfileConverter converter = new(options);
+
+        Span<YCbCr> inputSpan = new YCbCr[5];
+        inputSpan.Fill(input);
+
+        Span<CieLuv> actualSpan = new CieLuv[5];
+
+        // Act
+        CieLuv actual = converter.Convert<YCbCr, CieLuv>(input);
+        converter.Convert<YCbCr, CieLuv>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}