Saturation

tests/ImageSharp.Tests/Processing/ColorMatrix/SaturationTest.cs

@@ -0,0 +1,53 @@
+// <copyright file="SaturationTest.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.Tests.Processing.ColorMatrix
+{
+    using ImageSharp.PixelFormats;
+
+    using Xunit;
+
+    public class SaturationTest : FileTestBase
+    {
+        public static readonly TheoryData<int> SaturationValues
+        = new TheoryData<int>
+        {
+            50 ,
+           -50 ,
+        };
+
+        [Theory]
+        [WithFileCollection(nameof(AllBmpFiles), nameof(SaturationValues), StandardPixelTypes)]
+        public void ImageShouldApplySaturationFilter<TPixel>(TestImageProvider<TPixel> provider, int value)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            using (Image<TPixel> image = provider.GetImage())
+            {
+                image.Saturation(value)
+                    .DebugSave(provider, value, Extensions.Bmp);
+            }
+        }
+
+        [Theory]
+        [WithFileCollection(nameof(AllBmpFiles), nameof(SaturationValues), StandardPixelTypes)]
+        public void ImageShouldApplySaturationFilterInBox<TPixel>(TestImageProvider<TPixel> provider, int value)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            using (Image<TPixel> source = provider.GetImage())
+            using (var image = new Image<TPixel>(source))
+            {
+                var bounds = new Rectangle(10, 10, image.Width / 2, image.Height / 2);
+
+                image.Saturation(value, bounds)
+                    .DebugSave(provider, value, Extensions.Bmp);
+
+                // Draw identical shapes over the bounded and compare to ensure changes are constrained.
+                image.Fill(NamedColors<TPixel>.HotPink, bounds);
+                source.Fill(NamedColors<TPixel>.HotPink, bounds);
+                ImageComparer.CheckSimilarity(image, source);
+            }
+        }
+    }
+}

tests/ImageSharp.Tests/Processors/Filters/SaturationTest.cs

@@ -1,57 +0,0 @@
-// <copyright file="SaturationTest.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.Tests
-{
-    using System.IO;
-
-    using ImageSharp.PixelFormats;
-
-    using Xunit;
-
-    public class SaturationTest : FileTestBase
-    {
-        public static readonly TheoryData<int> SaturationValues
-        = new TheoryData<int>
-        {
-            50 ,
-           -50 ,
-        };
-
-        [Theory]
-        [MemberData(nameof(SaturationValues))]
-        public void ImageShouldApplySaturationFilter(int value)
-        {
-            string path = CreateOutputDirectory("Saturation");
-
-            foreach (TestFile file in Files)
-            {
-                string filename = file.GetFileName(value);
-                using (Image<Rgba32> image = file.CreateImage())
-                using (FileStream output = File.OpenWrite($"{path}/{filename}"))
-                {
-                    image.Saturation(value).Save(output);
-                }
-            }
-        }
-
-        [Theory]
-        [MemberData(nameof(SaturationValues))]
-        public void ImageShouldApplySaturationFilterInBox(int value)
-        {
-            string path = this.CreateOutputDirectory("Saturation");
-
-            foreach (TestFile file in Files)
-            {
-                string filename = file.GetFileName(value + "-InBox");
-                using (Image<Rgba32> image = file.CreateImage())
-                using (FileStream output = File.OpenWrite($"{path}/{filename}"))
-                {
-                    image.Saturation(value, new Rectangle(10, 10, image.Width / 2, image.Height / 2)).Save(output);
-                }
-            }
-        }
-    }
-}