Reuse PlatformFact on some onplatform tests

tests/Avalonia.IntegrationTests.Appium/PlatformFactAttribute.cs

@@ -1,27 +1,34 @@
+#nullable enable
 using System;
-using System.Linq;
 using System.Runtime.InteropServices;
 using Xunit;
 
-namespace Avalonia.IntegrationTests.Appium
+namespace Avalonia
 {
     [Flags]
     internal enum TestPlatforms
     {
         Windows = 0x01,
         MacOS = 0x02,
-        All = Windows | MacOS,
+        Linux = 0x04,
+        All = Windows | MacOS | Linux,
     }
-    
+
     internal class PlatformFactAttribute : FactAttribute
     {
-        public PlatformFactAttribute(TestPlatforms platforms = TestPlatforms.All) => Platforms = platforms;
-        
+        private readonly string? _reason;
+
+        public PlatformFactAttribute(TestPlatforms platforms, string? reason = null)
+        {
+            _reason = reason;
+            Platforms = platforms;
+        }
+
         public TestPlatforms Platforms { get; }
-        
+
         public override string? Skip
         {
-            get => IsSupported() ? null : $"Ignored on {RuntimeInformation.OSDescription}";
+            get => IsSupported() ? null : $"Ignored on {RuntimeInformation.OSDescription}" + (_reason is not null ? $" reason: \"{_reason}\"" : "");
             set => throw new NotSupportedException();
         }
 
@@ -31,6 +38,8 @@ namespace Avalonia.IntegrationTests.Appium
                 return Platforms.HasAnyFlag(TestPlatforms.Windows);
             if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
                 return Platforms.HasAnyFlag(TestPlatforms.MacOS);
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+                return Platforms.HasAnyFlag(TestPlatforms.Linux);
             return false;
         }
     }

tests/Avalonia.Markup.Xaml.UnitTests/Avalonia.Markup.Xaml.UnitTests.csproj

@@ -31,5 +31,10 @@
     <AvaloniaResource Include="Xaml\XamlIlClassWithPrecompiledXaml.xaml" />
     <AvaloniaResource Include="Xaml\XamlIlClassWithCustomProperty.xaml" />
   </ItemGroup>
+  <ItemGroup>
+    <Compile Include="..\Avalonia.IntegrationTests.Appium\PlatformFactAttribute.cs">
+      <Link>PlatformFactAttribute.cs</Link>
+    </Compile>
+  </ItemGroup>
   <Import Project="..\..\build\BuildTargets.targets" />
 </Project>

tests/Avalonia.Markup.Xaml.UnitTests/MarkupExtensions/OptionsMarkupExtensionTests.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Reactive.Disposables;
+using System.Runtime.InteropServices;
 using Avalonia.Controls;
 using Avalonia.Markup.Xaml.MarkupExtensions;
 using Avalonia.Media;
@@ -185,7 +186,7 @@ public class OptionsMarkupExtensionTests : XamlTestBase
         Assert.Equal(new Thickness(10, 8, 10, 8), border.Padding);
     }
 
-    [Fact]
+    [PlatformFact(TestPlatforms.Windows | TestPlatforms.Linux, "TypeArguments test is failing on macOS from SRE emit")]
     public void Respect_Custom_TypeArgument()
     {
         using var _ = SetupTestGlobals("option 1");
@@ -261,7 +262,7 @@ public class OptionsMarkupExtensionTests : XamlTestBase
         Assert.Equal(Color.Parse("#ff506070"), ((ISolidColorBrush)border.Background!).Color);
     }
 
-    [Fact]
+    [PlatformFact(TestPlatforms.Windows | TestPlatforms.Linux, "TypeArguments test is failing on macOS from SRE emit")]
     public void Support_Xml_Syntax_With_Custom_TypeArguments()
     {
         using var _ = SetupTestGlobals("option 1");