Move [InternalsVisibleTo] to .csproj files

Author: Sergio0694

build/Community.Toolkit.Common.props

@@ -27,6 +27,7 @@
   <PropertyGroup>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>$(RepositoryDirectory)toolkit.snk</AssemblyOriginatorKeyFile>
+    <AssemblySignPublicKey>002400000480000094000000060200000024000052534131000400000100010041753AF735AE6140C9508567666C51C6AB929806ADB0D210694B30AB142A060237BC741F9682E7D8D4310364B4BBA4EE89CC9D3D5CE7E5583587E8EA44DCA09977996582875E71FB54FA7B170798D853D5D8010B07219633BDB761D01AC924DA44576D6180CDCEAE537973982BB461C541541D58417A3794E34F45E6F2D129E2</AssemblySignPublicKey>
   </PropertyGroup>
 
   <PropertyGroup>

src/CommunityToolkit.HighPerformance/CommunityToolkit.HighPerformance.csproj

@@ -35,6 +35,11 @@
         <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
         <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" />
       </ItemGroup>
+
+      <!-- On .NET Standard 2.0, the unit test project also needs access to internals-->
+      <ItemGroup>
+        <InternalsVisibleTo Include="CommunityToolkit.HighPerformance.UnitTests, PublicKey=$(AssemblySignPublicKey)" />
+      </ItemGroup>
     </When>
 
     <When Condition="'$(TargetFramework)' == 'netstandard2.1'">

src/CommunityToolkit.HighPerformance/Properties/AssemblyInfo.cs

@@ -40,6 +40,11 @@
     <ProjectReference Include="..\CommunityToolkit.Mvvm.SourceGenerators.Roslyn431\CommunityToolkit.Mvvm.SourceGenerators.Roslyn431.csproj" ReferenceOutputAssembly="false" />
   </ItemGroup>
 
+  <!-- Add the [InternalsVisibleTo] attribute for the test project -->
+  <ItemGroup>
+    <InternalsVisibleTo Include="CommunityToolkit.Mvvm.Internals.UnitTests, PublicKey=$(AssemblySignPublicKey)" />
+  </ItemGroup>
+
   <!-- Necessary polyfills -->
   <PropertyGroup>
     <PolySharpIncludeGeneratedTypes>