Fix tests

Author: JimBobSquarePants

ImageSharp.Drawing.sln

@@ -3,7 +3,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 16
 VisualStudioVersion = 16.0.28902.138
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{C317F1B1-D75E-4C6D-83EB-80367343E0D7}"
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "_root", "_root", "{C317F1B1-D75E-4C6D-83EB-80367343E0D7}"
 	ProjectSection(SolutionItems) = preProject
 		.editorconfig = .editorconfig
 		.gitattributes = .gitattributes
@@ -352,6 +352,7 @@ Global
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
+		{1799C43E-5C54-4A8F-8D64-B1475241DB0D} = {C317F1B1-D75E-4C6D-83EB-80367343E0D7}
 		{FBE8C1AD-5AEC-4514-9B64-091D8E145865} = {1799C43E-5C54-4A8F-8D64-B1475241DB0D}
 		{2E33181E-6E28-4662-A801-E2E7DC206029} = {815C0625-CD3D-440F-9F80-2D83856AB7AE}
 		{FA55F5DE-11A6-487D-ABA4-BC93A02717DD} = {56801022-D71A-4FBE-BC5B-CBA08E2284EC}

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

@@ -58,7 +58,7 @@ public void GetReferenceOutputFileName()
         [InlineData("lol/Baz.gif", typeof(GifEncoder))]
         public void GetReferenceEncoder_ReturnsCorrectEncoders_Windows(string fileName, Type expectedEncoderType)
         {
-            if (TestEnvironment.IsLinux)
+            if (!TestEnvironment.IsWindows)
             {
                 return;
             }
@@ -74,7 +74,7 @@ public void GetReferenceEncoder_ReturnsCorrectEncoders_Windows(string fileName,
         [InlineData("lol/Baz.gif", typeof(GifDecoder))]
         public void GetReferenceDecoder_ReturnsCorrectDecoders_Windows(string fileName, Type expectedDecoderType)
         {
-            if (TestEnvironment.IsLinux)
+            if (!TestEnvironment.IsWindows)
             {
                 return;
             }