proper BmpDecoderTests (at least on Windows)

tests/ImageSharp.Tests/Formats/Bmp/BmpDecoderTests.cs

@@ -1,26 +1,38 @@
-// <copyright file="BmpEncoderTests.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
+// Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
-// </copyright>
 
-using ImageSharp.Formats;
+using SixLabors.ImageSharp.Formats;
+using SixLabors.ImageSharp.PixelFormats;
+using Xunit;
+// ReSharper disable InconsistentNaming
 
-namespace ImageSharp.Tests
+namespace SixLabors.ImageSharp.Tests
 {
-    using ImageSharp.PixelFormats;
-
-    using Xunit;
+    using SixLabors.ImageSharp.Formats.Bmp;
 
     public class BmpDecoderTests : FileTestBase
     {
         [Theory]
         [WithFileCollection(nameof(AllBmpFiles), PixelTypes.Rgb24)]
-        public void OpenAllBmpFiles_SaveBmp<TPixel>(TestImageProvider<TPixel> provider)
+        public void DecodeBmp<TPixel>(TestImageProvider<TPixel> provider)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            using (Image<TPixel> image = provider.GetImage(new BmpDecoder()))
+            {
+                image.DebugSave(provider, "bmp");
+                image.CompareToOriginal(provider);
+            }
+        }
+
+        [Theory]
+        [WithFile(TestImages.Bmp.F, CommonNonDefaultPixelTypes)]
+        public void BmpDecoder_IsNotBoundToSinglePixelType<TPixel>(TestImageProvider<TPixel> provider)
             where TPixel : struct, IPixel<TPixel>
         {
-            using (Image<TPixel> image = provider.GetImage())
+            using (Image<TPixel> image = provider.GetImage(new BmpDecoder()))
             {
-                provider.Utility.SaveTestOutputFile(image, "bmp");
+                image.DebugSave(provider, "bmp");
+                image.CompareToOriginal(provider);
             }
         }
     }

tests/ImageSharp.Tests/TestUtilities/TestEnvironment.cs

@@ -48,24 +48,44 @@ namespace SixLabors.ImageSharp.Tests
 
         internal static Configuration Configuration => configuration.Value;
 
+        private static void ConfigureCodecs(
+            this Configuration cfg,
+            IImageFormat imageFormat,
+            IImageDecoder decoder,
+            IImageEncoder encoder,
+            IImageFormatDetector detector)
+        {
+            cfg.SetDecoder(imageFormat, decoder);
+            cfg.SetEncoder(imageFormat, encoder);
+            cfg.AddImageFormatDetector(detector);
+        }
+
         private static Configuration CreateDefaultConfiguration()
         {
             var configuration = new Configuration(
                 new PngConfigurationModule(),
                 new JpegConfigurationModule(),
-                new GifConfigurationModule(),
-                new BmpConfigurationModule()
+                new GifConfigurationModule()
                 );
 
             if (!IsLinux)
             {
-                configuration.SetDecoder(ImageFormats.Png, SystemDrawingReferenceDecoder.Instance);
-                configuration.SetEncoder(ImageFormats.Png, SystemDrawingReferenceEncoder.Png);
-                configuration.AddImageFormatDetector(new PngImageFormatDetector());
+                configuration.ConfigureCodecs(
+                    ImageFormats.Png,
+                    SystemDrawingReferenceDecoder.Instance,
+                    SystemDrawingReferenceEncoder.Png,
+                    new PngImageFormatDetector());
+
+                configuration.ConfigureCodecs(
+                    ImageFormats.Bitmap,
+                    SystemDrawingReferenceDecoder.Instance,
+                    SystemDrawingReferenceEncoder.Png,
+                    new PngImageFormatDetector());
             }
             else
             {
-                new PngConfigurationModule().Configure(configuration);
+                configuration.Configure(new PngConfigurationModule());
+                configuration.Configure(new BmpConfigurationModule());
             }
             
             return configuration;

tests/ImageSharp.Tests/TestUtilities/Tests/TestEnvironmentTests.cs

@@ -14,6 +14,7 @@ using Xunit.Abstractions;
 // ReSharper disable InconsistentNaming
 namespace SixLabors.ImageSharp.Tests
 {
+    using SixLabors.ImageSharp.Formats.Bmp;
     using SixLabors.ImageSharp.Formats.Png;
 
     public class TestEnvironmentTests
@@ -67,6 +68,7 @@ namespace SixLabors.ImageSharp.Tests
 
         [Theory]
         [InlineData("lol/foo.png", typeof(SystemDrawingReferenceEncoder))]
+        [InlineData("lol/Rofl.bmp", typeof(SystemDrawingReferenceEncoder))]
         [InlineData("lol/Baz.JPG", typeof(JpegEncoder))]
         [InlineData("lol/Baz.gif", typeof(GifEncoder))]
         public void GetReferenceEncoder_ReturnsCorrectEncoders_Windows(string fileName, Type expectedEncoderType)
@@ -79,6 +81,7 @@ namespace SixLabors.ImageSharp.Tests
 
         [Theory]
         [InlineData("lol/foo.png", typeof(SystemDrawingReferenceDecoder))]
+        [InlineData("lol/Rofl.bmp", typeof(SystemDrawingReferenceDecoder))]
         [InlineData("lol/Baz.JPG", typeof(JpegDecoder))]
         [InlineData("lol/Baz.gif", typeof(GifDecoder))]
         public void GetReferenceDecoder_ReturnsCorrectEncoders_Windows(string fileName, Type expectedDecoderType)
@@ -91,6 +94,7 @@ namespace SixLabors.ImageSharp.Tests
 
         [Theory]
         [InlineData("lol/foo.png", typeof(PngEncoder))]
+        [InlineData("lol/Rofl.bmp", typeof(BmpEncoder))]
         [InlineData("lol/Baz.JPG", typeof(JpegEncoder))]
         [InlineData("lol/Baz.gif", typeof(GifEncoder))]
         public void GetReferenceEncoder_ReturnsCorrectEncoders_Linux(string fileName, Type expectedEncoderType)
@@ -103,6 +107,7 @@ namespace SixLabors.ImageSharp.Tests
 
         [Theory]
         [InlineData("lol/foo.png", typeof(PngDecoder))]
+        [InlineData("lol/Rofl.bmp", typeof(BmpDecoder))]
         [InlineData("lol/Baz.JPG", typeof(JpegDecoder))]
         [InlineData("lol/Baz.gif", typeof(GifDecoder))]
         public void GetReferenceDecoder_ReturnsCorrectEncoders_Linux(string fileName, Type expectedDecoderType)