Don't exclude, just suppress.

tests/ImageSharp.Benchmarks/Codecs/Bmp/DecodeBmp.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Tests;
@@ -41,4 +40,3 @@ public class DecodeBmp
         return new Size(image.Width, image.Height);
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Bmp/EncodeBmp.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing.Imaging;
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.PixelFormats;
@@ -52,4 +51,3 @@ public class EncodeBmp
         this.bmpCore.SaveAsBmp(memoryStream);
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Bmp/EncodeBmpMultiple.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing.Imaging;
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.Formats.Bmp;
@@ -29,4 +28,3 @@ public class EncodeBmpMultiple : MultiImageBenchmarkBase.WithImagesPreloaded
             return null;
         });
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Gif/DecodeGif.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Tests;
@@ -19,15 +18,9 @@ public class DecodeGif
         => Path.Combine(TestEnvironment.InputImagesDirectoryFullPath, this.TestImage);
 
     [GlobalSetup]
-    public void ReadImages()
-    {
-        if (this.gifBytes == null)
-        {
-            this.gifBytes = File.ReadAllBytes(this.TestImageFullPath);
-        }
-    }
+    public void ReadImages() => this.gifBytes ??= File.ReadAllBytes(this.TestImageFullPath);
 
-    [Params(TestImages.Gif.Rings)]
+    [Params(TestImages.Gif.Cheers)]
     public string TestImage { get; set; }
 
     [Benchmark(Baseline = true, Description = "System.Drawing Gif")]
@@ -46,4 +39,3 @@ public class DecodeGif
         return new Size(image.Width, image.Height);
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Gif/EncodeGif.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing.Imaging;
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.Formats.Gif;
@@ -65,4 +64,3 @@ public class EncodeGif
         this.bmpCore.SaveAsGif(memoryStream, this.encoder);
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Gif/EncodeGifMultiple.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing.Imaging;
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.Formats.Gif;
@@ -40,4 +39,3 @@ public class EncodeGifMultiple : MultiImageBenchmarkBase.WithImagesPreloaded
             return null;
         });
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Jpeg/DecodeJpegParseStreamOnly.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.Formats.Jpeg;
 using SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder;
@@ -66,7 +65,7 @@ public class DecodeJpegParseStreamOnly
         }
     }
 }
-#endif
+
 /*
 BenchmarkDotNet=v0.13.0, OS=Windows 10.0.19042.1083 (20H2/October2020Update)
 Intel Core i7-6700K CPU 4.00GHz (Skylake), 1 CPU, 8 logical and 4 physical cores

tests/ImageSharp.Benchmarks/Codecs/Jpeg/DecodeJpeg_Aggregate.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Tests;
@@ -38,4 +37,3 @@ public class DecodeJpeg_Aggregate : MultiImageBenchmarkBase
     public void SystemDrawing()
         => this.ForEachStream(SDImage.FromStream);
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Jpeg/DecodeJpeg_ImageSpecific.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.Formats;
 using SixLabors.ImageSharp.Tests;
@@ -67,4 +66,3 @@ public class DecodeJpeg_ImageSpecific
     |     'Decode Jpeg - ImageSharp' | Jpg/i(...)e.jpg [43] | 276.490 ms | 195.5104 ms | 10.7166 ms |  0.71 |    0.01 |     - |     - |     - | 36022368 B |
      */
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/MultiImageBenchmarkBase.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing;
 using System.Numerics;
 using BenchmarkDotNet.Attributes;
@@ -237,4 +236,3 @@ public abstract class MultiImageBenchmarkBase
         }
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Png/DecodePng.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Tests;
@@ -41,4 +40,3 @@ public class DecodePng
         return image.Size;
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Png/EncodePng.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing.Imaging;
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.Formats.Png;
@@ -59,4 +58,3 @@ public class EncodePng
         this.bmpCore.SaveAsPng(memoryStream, encoder);
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Tga/DecodeTga.cs

@@ -31,7 +31,7 @@ public class DecodeTga
     {
         MagickReadSettings settings = new() { Format = MagickFormat.Tga };
         using MagickImage image = new(new MemoryStream(this.data), settings);
-        return (int)image.Width;
+        return image.Width;
     }
 
     [Benchmark(Description = "ImageSharp Tga")]

tests/ImageSharp.Benchmarks/Codecs/Tiff/DecodeTiff.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 // Enable this for using larger Tiff files. Those files are very large (> 700MB) and therefor not part of the git repo.
 // Use the scripts gen_big.ps1 and gen_medium.ps1 in tests\Images\Input\Tiff\Benchmarks to generate those images.
 //// #define BIG_TESTS
@@ -83,4 +82,3 @@ public class DecodeTiff
         return image.Size;
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Tiff/EncodeTiff.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing.Imaging;
 using BenchmarkDotNet.Attributes;
 
@@ -111,4 +110,3 @@ public class EncodeTiff
     public static bool IsOneBitCompression(TiffCompression compression)
         => compression is TiffCompression.Ccitt1D or TiffCompression.CcittGroup3Fax or TiffCompression.CcittGroup4Fax;
 }
-#endif

tests/ImageSharp.Benchmarks/Codecs/Webp/DecodeWebp.cs

@@ -47,7 +47,7 @@ public class DecodeWebp
         MagickReadSettings settings = new() { Format = MagickFormat.WebP };
         using MemoryStream memoryStream = new(this.webpLossyBytes);
         using MagickImage image = new(memoryStream, settings);
-        return (int)image.Width;
+        return image.Width;
     }
 
     [Benchmark(Description = "ImageSharp Lossy Webp")]
@@ -65,7 +65,7 @@ public class DecodeWebp
         { Format = MagickFormat.WebP };
         using MemoryStream memoryStream = new(this.webpLossyBytes);
         using MagickImage image = new(memoryStream, settings);
-        return (int)image.Width;
+        return image.Width;
     }
 
     [Benchmark(Description = "ImageSharp Lossless Webp")]

tests/ImageSharp.Benchmarks/Codecs/Webp/EncodeWebp.cs

@@ -14,9 +14,7 @@ namespace SixLabors.ImageSharp.Benchmarks.Codecs;
 [MarkdownExporter]
 [HtmlExporter]
 [Config(typeof(Config.Short))]
-#pragma warning disable CA1001 // Types that own disposable fields should be disposable
 public class EncodeWebp
-#pragma warning restore CA1001 // Types that own disposable fields should be disposable
 {
     private MagickImage webpMagick;
     private Image<Rgba32> webp;

tests/ImageSharp.Benchmarks/Color/ColorEquality.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using BenchmarkDotNet.Attributes;
 using SixLabors.ImageSharp.PixelFormats;
 using SystemColor = System.Drawing.Color;
@@ -18,4 +17,3 @@ public class ColorEquality
     public bool ColorEqual()
         => new Rgba32(128, 128, 128, 128).Equals(new Rgba32(128, 128, 128, 128));
 }
-#endif

tests/ImageSharp.Benchmarks/Config.cs

@@ -32,7 +32,7 @@ public partial class Config : ManualConfig
     public class Standard : Config
     {
         public Standard() => this.AddJob(
-                Job.Default.WithRuntime(CoreRuntime.Core80).WithArguments(new Argument[] { new MsBuildArgument("/p:DebugType=portable") }));
+                Job.Default.WithRuntime(CoreRuntime.Core80).WithArguments([new MsBuildArgument("/p:DebugType=portable")]));
     }
 
     public class Short : Config
@@ -42,12 +42,10 @@ public partial class Config : ManualConfig
                            .WithLaunchCount(1)
                            .WithWarmupCount(3)
                            .WithIterationCount(3)
-                           .WithArguments(new Argument[] { new MsBuildArgument("/p:DebugType=portable") }));
+                           .WithArguments([new MsBuildArgument("/p:DebugType=portable")]));
     }
 
 #if OS_WINDOWS
-#pragma warning disable CA1416 // Validate platform compatibility
     private bool IsElevated => new WindowsPrincipal(WindowsIdentity.GetCurrent()).IsInRole(WindowsBuiltInRole.Administrator);
-#pragma warning restore CA1416 // Validate platform compatibility
 #endif
 }

tests/ImageSharp.Benchmarks/LoadResizeSave/LoadResizeSaveStressRunner.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using System.Drawing.Imaging;
@@ -346,4 +345,3 @@ public class LoadResizeSaveStressRunner
         thumb.Jpegsave(this.OutputPath(input), q: Quality, keep: NetVips.Enums.ForeignKeep.None);
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Processing/Crop.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using BenchmarkDotNet.Attributes;
@@ -38,4 +37,3 @@ public class Crop
         return new Size(image.Width, image.Height);
     }
 }
-#endif

tests/ImageSharp.Benchmarks/Processing/Resize.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-#if OS_WINDOWS
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using BenchmarkDotNet.Attributes;
@@ -241,4 +240,3 @@ public class Resize_Bicubic_Compare_Rgba32_Rgb24
     [Benchmark]
     public void Rgb24() => this.rgb24.ImageSharp_P1();
 }
-#endif