Reproduction Sample for microsoft/testfx#3856

Directory.Packages.props

@@ -0,0 +1,14 @@
+<Project>
+  <PropertyGroup>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
+    <PackageVersion Include="MSTest.TestAdapter" Version="3.6.0" />
+    <PackageVersion Include="MSTest.TestFramework" Version="3.6.0" />
+  </ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0' Or '$(TargetFramework)' == 'net48'">
+    <PackageVersion Include="Microsoft.AspNetCore" Version="2.1.7" />
+    <PackageVersion Include="Microsoft.AspNetCore.Authentication" Version="2.1.2" />
+  </ItemGroup>
+</Project>

Dummy.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dummy.AspNetCore", "src\Dummy.AspNetCore\Dummy.AspNetCore.csproj", "{FFA3B6C8-8371-4B82-811D-BE8F1EB6DD6A}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Dummy.UnitTests", "test\Dummy.UnitTests\Dummy.UnitTests.csproj", "{1EBE46F7-CB3C-46A9-84BE-6567AA7DA147}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Projektmappenelemente", "Projektmappenelemente", "{9D0881D0-D78F-4156-85FB-90F60D00B877}"
+	ProjectSection(SolutionItems) = preProject
+		Directory.Packages.props = Directory.Packages.props
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{FFA3B6C8-8371-4B82-811D-BE8F1EB6DD6A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FFA3B6C8-8371-4B82-811D-BE8F1EB6DD6A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FFA3B6C8-8371-4B82-811D-BE8F1EB6DD6A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FFA3B6C8-8371-4B82-811D-BE8F1EB6DD6A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1EBE46F7-CB3C-46A9-84BE-6567AA7DA147}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1EBE46F7-CB3C-46A9-84BE-6567AA7DA147}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1EBE46F7-CB3C-46A9-84BE-6567AA7DA147}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1EBE46F7-CB3C-46A9-84BE-6567AA7DA147}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {5F49C05A-2D27-4AAE-BBD0-997102E9C6F3}
+	EndGlobalSection
+EndGlobal

src/Dummy.AspNetCore/Class1.cs

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+namespace Dummy.AspNetCore;
+
+public class Class1
+{
+  public void DummyMethod(Microsoft.AspNetCore.Authentication.AuthenticationScheme authScheme)
+  {
+    if (string.IsNullOrEmpty(authScheme.Name))
+      throw new Exception("Dummy");
+  }
+}

src/Dummy.AspNetCore/Dummy.AspNetCore.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <LangVersion>Latest</LangVersion>
+  </PropertyGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+    <PackageReference Include="Microsoft.AspNetCore" />
+    <PackageReference Include="Microsoft.AspNetCore.Authentication" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+
+</Project>

test/Dummy.UnitTests/Dummy.UnitTests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>net48;net8.0</TargetFrameworks>
+    <IsPackable>false</IsPackable>
+    <LangVersion>latest</LangVersion>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <LangVersion>Latest</LangVersion>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="MSTest.TestAdapter">
+      <TreatAsUsed>true</TreatAsUsed>
+    </PackageReference>
+    <PackageReference Include="MSTest.TestFramework" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Dummy.AspNetCore\Dummy.AspNetCore.csproj" />
+  </ItemGroup>
+
+</Project>

test/Dummy.UnitTests/MSTestSettings.cs

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+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+[assembly: Parallelize(Scope = ExecutionScope.ClassLevel)]

test/Dummy.UnitTests/Test1.cs

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+using Dummy.AspNetCore;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace Dummy.UnitTests;
+
+[TestClass]
+public sealed class Test1
+{
+  [TestMethod]
+  public void TestMethod1()
+  {
+    var authScheme = new Microsoft.AspNetCore.Authentication.AuthenticationScheme("Name", "DisplayName", typeof(string));
+
+    var dummy = new Class1();
+    dummy.DummyMethod(authScheme);
+  }
+}