refactor: make Microsofts FakeTimeProvider internal

Author: egil

src/TimeProviderExtensions/Microsoft.Extensions.Time.Testing/FakeTimeProvider.cs

@@ -12,7 +12,7 @@ namespace Microsoft.Extensions.Time.Testing;
 /// <summary>
 /// A synthetic clock used to provide deterministic behavior in tests.
 /// </summary>
-public class FakeTimeProvider : TimeProvider
+internal class FakeTimeProvider : TimeProvider
 {
     internal static readonly DateTimeOffset Epoch = new(2000, 1, 1, 0, 0, 0, 0, TimeSpan.Zero);
 

src/TimeProviderExtensions/TimeProviderExtensions.csproj

@@ -67,4 +67,9 @@
 		</None>
 	</ItemGroup>
 
+	<ItemGroup>
+		<!-- Makes internal types in libraries visible to their test projects -->
+		<InternalsVisibleTo Include="$(AssemblyName).Tests" />
+	</ItemGroup>
+
 </Project>

test/TimeProviderExtensions.Tests/GlobalSuppressions.cs

@@ -0,0 +1,8 @@
+// This file is used by Code Analysis to maintain SuppressMessage
+// attributes that are applied to this project.
+// Project-level suppressions either have no target or are given
+// a specific target and scoped to a namespace, type, member, etc.
+
+using System.Diagnostics.CodeAnalysis;
+
+[assembly: SuppressMessage("Usage", "xUnit1000:Test classes must be public", Justification = "I want to test internal files")]

test/TimeProviderExtensions.Tests/ManualTimeProviderWaitAsyncTests.cs

@@ -7,7 +7,7 @@
 
 namespace TimeProviderExtensions;
 
-public class ManualTimeProviderWaitAsyncTests
+internal class ManualTimeProviderWaitAsyncTests
 {
     internal const uint MaxSupportedTimeout = 0xfffffffe;
     private readonly static TimeSpan DelayedTaskDelay = TimeSpan.FromMilliseconds(2);