Create CieLchAndCieXyyConversionTests.cs

tests/ImageSharp.Tests/ColorProfiles/CieLchAndCieXyyConversionTests.cs

@@ -0,0 +1,70 @@
+// Copyright (c) Six Labors.
+// Licensed under the Six Labors Split License.
+
+using SixLabors.ImageSharp.ColorProfiles;
+
+namespace SixLabors.ImageSharp.Tests.ColorProfiles;
+
+/// <summary>
+/// Tests <see cref="CieLch"/>-<see cref="CieXyy"/> conversions.
+/// </summary>
+public class CieLchAndCieXyyConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0003f);
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(36.0555, 103.6901, 10.01514, 0.67641, 0.22770, 0.09037)]
+    public void Convert_CieLch_to_CieXyy(float l, float c, float h, float x, float y, float yl)
+    {
+        // Arrange
+        CieLch input = new(l, c, h);
+        CieXyy expected = new(x, y, yl);
+        ColorProfileConverter converter = new();
+
+        Span<CieLch> inputSpan = new CieLch[5];
+        inputSpan.Fill(input);
+
+        Span<CieXyy> actualSpan = new CieXyy[5];
+
+        // Act
+        CieXyy actual = converter.Convert<CieLch, CieXyy>(input);
+        converter.Convert<CieLch, CieXyy>(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(0.67641, 0.22770, 0.09037, 36.05544, 103.691315, 10.012783)]
+    public void Convert_CieXyy_to_CieLch(float x, float y, float yl, float l, float c, float h)
+    {
+        // Arrange
+        CieXyy input = new(x, y, yl);
+        CieLch expected = new(l, c, h);
+        ColorProfileConverter converter = new();
+
+        Span<CieXyy> inputSpan = new CieXyy[5];
+        inputSpan.Fill(input);
+
+        Span<CieLch> actualSpan = new CieLch[5];
+
+        // Act
+        CieLch actual = converter.Convert<CieXyy, CieLch>(input);
+        converter.Convert<CieXyy, CieLch>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}