Create CieLuvAndHunterLabConversionTests.cs

tests/ImageSharp.Tests/ColorProfiles/CieLuvAndHunterLabConversionTests.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="HunterLab"/> conversions.
+/// </summary>
+public class CieLuvAndHunterLabConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0002F);
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(36.0555, 93.6901, 10.01514, 30.59289, 48.55542, 9.80487)]
+    public void Convert_CieLuv_to_HunterLab(float l, float u, float v, float l2, float a, float b)
+    {
+        // Arrange
+        CieLuv input = new(l, u, v);
+        HunterLab expected = new(l2, a, b);
+        ColorConversionOptions options = new() { WhitePoint = Illuminants.D65, TargetWhitePoint = Illuminants.D50 };
+        ColorProfileConverter converter = new(options);
+
+        Span<CieLuv> inputSpan = new CieLuv[5];
+        inputSpan.Fill(input);
+
+        Span<HunterLab> actualSpan = new HunterLab[5];
+
+        // Act
+        HunterLab actual = converter.Convert<CieLuv, HunterLab>(input);
+        converter.Convert<CieLuv, HunterLab>(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(30.59289, 48.55542, 9.80487, 36.0555, 93.6901, 10.01514)]
+    public void Convert_HunterLab_to_CieLuv(float l2, float a, float b, float l, float u, float v)
+    {
+        // Arrange
+        HunterLab input = new(l2, a, b);
+        CieLuv expected = new(l, u, v);
+        ColorConversionOptions options = new() { WhitePoint = Illuminants.D50, TargetWhitePoint = Illuminants.D65 };
+        ColorProfileConverter converter = new(options);
+
+        Span<HunterLab> inputSpan = new HunterLab[5];
+        inputSpan.Fill(input);
+
+        Span<CieLuv> actualSpan = new CieLuv[5];
+
+        // Act
+        CieLuv actual = converter.Convert<HunterLab, CieLuv>(input);
+        converter.Convert<HunterLab, CieLuv>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}