Doesn't work with dotnet test on SDK-style .NET Framework projects with case sensitivity enabled

[lilith]

Example .csproj (the default template, but net472).

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net472</TargetFramework>

    <IsPackable>false</IsPackable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
    <PackageReference Include="xunit" Version="2.4.2" />
    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
    <PackageReference Include="coverlet.collector" Version="3.1.2">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
  </ItemGroup>
    
</Project>

Empty test stub

using Xunit;
namespace PrimeService.Tests
{
    public class UnitTest1
    {
        [Fact]
        public void Test1()
        {

        }
    }
}

dotnet test fails to find runner utility due to all caps extension '.DLL'

PS C:\Users\lilith\imazen\resizer\PrimeService.Tests> dotnet test
  Determining projects to restore...
  Restored C:\Users\lilith\imazen\resizer\PrimeService.Tests\PrimeService.Tests.csproj (in 162 ms).
  PrimeService.Tests -> C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472\PrimeService.Tests.dll
Test run for C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472\PrimeService.Tests.dll (.NETFramework,Version=v4.7.2)
Microsoft (R) Test Execution Command Line Tool Version 17.2.0 (x64)
Copyright (c) Microsoft Corporation.  All rights reserved.

Starting test execution, please wait...
A total of 1 test files matched the specified pattern.
[xUnit.net 00:00:00.26] PrimeService.Tests: Catastrophic failure: System.ArgumentException: File not found: C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472\xunit.runner.utility.net452.DLL
Parameter name: assemblyFileName
   at Guard.FileExists(String argName, String fileName) in /_/src/common/Guard.cs:line 37
   at Xunit.AppDomainManager_AppDomain..ctor(String assemblyFileName, String configFileName, Boolean shadowCopy, String shadowCopyFolder) in /_/src/xunit.runner.utility/AppDomain/AppDomainManager_AppDomain.cs:line 18
   at Xunit.DiaSessionWrapper..ctor(String assemblyFilename) in /_/src/xunit.runner.utility/Utility/DiaSessionWrapper.cs:line 21
   at Xunit.VisualStudioSourceInformationProvider..ctor(String assemblyFileName) in /_/src/xunit.runner.utility/Frameworks/VisualStudioSourceInformationProvider.cs:line 24
   at Xunit.XunitFrontController..ctor(AppDomainSupport appDomainSupport, String assemblyFileName, String configFileName, Boolean shadowCopy, String shadowCopyFolder, ISourceInformationProvider sourceInformationProvider, IMessageSink diagnosticMessageSink) in /_/src/xunit.runner.utility/Frameworks/XunitFrontController.cs:line 70
   at Xunit.Runner.VisualStudio.VsTestRunner.RunTestsInAssembly(IRunContext runContext, IFrameworkHandle frameworkHandle, LoggerHelper logger, TestPlatformContext testPlatformContext, RunSettings runSettings, IMessageSinkWithTypes reporterMessageHandler, AssemblyRunInfo runInfo) in /_/src/xunit.runner.visualstudio/VsTestRunner.cs:line 498
No test is available in C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472\PrimeService.Tests.dll. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again.

As does powershell

PS C:\Users\lilith\imazen\resizer\PrimeService.Tests> ls C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472\xunit.runner.utility.net452.DLL
ls : Cannot find path 'C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472\xunit.runner.utility.net452.DLL' because it does not exist.
At line:1 char:1
+ ls C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472 ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (C:\Users\lilith...lity.net452.DLL:String) [Get-ChildItem], ItemNotFoundException
    + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.GetChildItemCommand
 
PS C:\Users\lilith\imazen\resizer\PrimeService.Tests> ls C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472\xunit.runner.utility.net452.dll


    Directory: C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472


Mode                 LastWriteTime         Length Name
-a----         1/18/2022  10:06 AM         255584 xunit.runner.utility.net452.dll

Disabling case sensitivity resolves the issue

 (Get-ChildItem -Recurse -Directory).FullName | ForEach-Object {fsutil.exe file setCaseSensitiveInfo $_ disable}

PS C:\Users\lilith\imazen\resizer\PrimeService.Tests> dotnet test
  Determining projects to restore...
  All projects are up-to-date for restore.
  PrimeService.Tests -> C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472\PrimeService.Tests.dll
Test run for C:\Users\lilith\imazen\resizer\PrimeService.Tests\bin\Debug\net472\PrimeService.Tests.dll (.NETFramework,Version=v4.7.2)
Microsoft (R) Test Execution Command Line Tool Version 17.2.0 (x64)
Copyright (c) Microsoft Corporation.  All rights reserved.

Starting test execution, please wait...
A total of 1 test files matched the specified pattern.

Passed!  - Failed:     0, Passed:     1, Skipped:     0, Total:     1, Duration:  - PrimeService.Tests.dll (net472)