From 28c6776884895fbe2f466c4cef3acc04ca817bbb Mon Sep 17 00:00:00 2001
From: ip75 <Igor.Polovykh@gmail.com>
Date: Tue, 17 Sep 2019 15:55:33 +0300
Subject: [PATCH] LightnessTest

---
 .../Processors/Filters/LightnessTest.cs       | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 tests/ImageSharp.Tests/Processing/Processors/Filters/LightnessTest.cs

diff --git a/tests/ImageSharp.Tests/Processing/Processors/Filters/LightnessTest.cs b/tests/ImageSharp.Tests/Processing/Processors/Filters/LightnessTest.cs
new file mode 100644
index 000000000..78d8af587
--- /dev/null
+++ b/tests/ImageSharp.Tests/Processing/Processors/Filters/LightnessTest.cs
@@ -0,0 +1,30 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.PixelFormats;
+
+using Xunit;
+
+namespace SixLabors.ImageSharp.Tests.Processing.Processors.Effects
+{
+    using SixLabors.ImageSharp.Processing;
+    using SixLabors.ImageSharp.Tests.TestUtilities.ImageComparison;
+
+    [GroupOutput("Filters")]
+    public class LightnessTest
+    {
+        private readonly ImageComparer imageComparer = ImageComparer.Tolerant(0.007F);
+
+        public static readonly TheoryData<float> LightnessValues
+        = new TheoryData<float>
+        {
+            .5F,
+           1.5F
+        };
+
+        [Theory]
+        [WithTestPatternImages(nameof(LightnessValues), 48, 48, PixelTypes.Rgba32)]
+        public void ApplyLightnessFilter<TPixel>(TestImageProvider<TPixel> provider, float value)
+            where TPixel : struct, IPixel<TPixel> => provider.RunValidatingProcessorTest(ctx => ctx.Lightness(value), value, this.imageComparer);
+    }
+}
\ No newline at end of file