Add unit tests for new attributes

Author: Sergio0694

tests/PolySharp.NuGet/PolySharp.NuGet.csproj

@@ -6,6 +6,7 @@
       https://api.nuget.org/v3/index.json;
       ..\..\artifacts;
     </RestoreSources>
+    <PolySharpIncludeRuntimeSupportedAttributes>true</PolySharpIncludeRuntimeSupportedAttributes>
   </PropertyGroup>
 
   <ItemGroup>
@@ -15,6 +16,7 @@
 
   <ItemGroup>
     <Compile Include="..\PolySharp.Tests\LanguageFeatures.cs" />
+    <Compile Include="..\PolySharp.Tests\RuntimeSupport.cs" />
   </ItemGroup>
 
 </Project>

tests/PolySharp.Tests/PolySharp.Tests.csproj

@@ -2,8 +2,13 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netcoreapp3.1;net6.0</TargetFrameworks>
+    <PolySharpIncludeRuntimeSupportedAttributes>true</PolySharpIncludeRuntimeSupportedAttributes>
   </PropertyGroup>
 
+  <ItemGroup>
+    <CompilerVisibleProperty Include="PolySharpIncludeRuntimeSupportedAttributes"/>
+  </ItemGroup>
+
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="System.Memory" Version="4.5.5" />
   </ItemGroup>

tests/PolySharp.Tests/RuntimeSupport.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+
+[assembly: TargetPlatform("windows6.1")]
+
+namespace PolySharp.Tests;
+
+internal class RandomApis
+{
+    [StackTraceHidden]
+    public void HideMe()
+    {
+    }
+}
+
+internal class PlatformSpecificApis
+{
+    [UnmanagedCallersOnly]
+    public static void NativeFunction()
+    {
+    }
+
+    [ObsoletedOSPlatform("windows6.1")]
+    public void Obsoleted()
+    {
+    }
+
+    [SupportedOSPlatform("windows6.1")]
+    public void Supported()
+    {
+    }
+
+    [SupportedOSPlatformGuard("windows6.1")]
+    public void SupportedGuard()
+    {
+    }
+
+    [UnsupportedOSPlatform("windows6.1")]
+    public void Unsupported()
+    {
+    }
+
+    [UnsupportedOSPlatformGuard("windows6.1")]
+    public void UnsupportedGuard()
+    {
+    }
+}
+
+internal class ReflectionApis
+{
+    [RequiresUnreferencedCode("No idea what I'll reflect on")]
+    public void ReflectOnSomethingCrazy()
+    {
+    }
+
+    public void ReflectOnInputType([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicMethods)] Type type)
+    {
+    }
+
+    [DynamicDependency("PolySharp.Tests.ReflectionApis.ReflectOnSomethingCrazy()")]
+    public void ReflectDependingOnStuff()
+    {
+    }
+
+    [UnconditionalSuppressMessage("Don't worry about it", "0000")]
+    public void SuppressEverything(Type type)
+    {
+        _ = type.GetProperties();
+    }
+}