Unit test cannot run normally on the local machine

[Olina-Zhang]

.NET version

10.0.100-preview.6.25310.107

Did it work in .NET Framework?

Not tested/verified

Did it work in any of the earlier releases of .NET Core or .NET 5+?

Not tested

Issue description

For the cloned latest Winforms repo, regressed after the PR: #13521, doesn't detect unit test, so cannot run unit test in our machine:

Log in Output window:

========== Starting test discovery ==========
[xUnit.net 00:00:00.01] xUnit.net VSTest Adapter v2.8.1+ce9211e970 (64-bit .NET 10.0.0-preview.6.25310.107)
No test is available in D:\Winforms\artifacts\bin\System.Private.Windows.Core.Tests\Debug\net10.0-windows7.0\System.Private.Windows.Core.Tests.dll. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again.
========== Test discovery finished: 0 Tests found in 4.7 sec ==========
Building Test Projects
Executing all tests in file: BindingTests.cs
========== Starting test run ==========
========== Test run aborted: 0 Tests (0 Passed, 0 Failed, 0 Skipped) run in < 1 ms ==========

Steps to reproduce

Clone Winforms repro, run any unit test

[Youssef1313]

This will likely be fixed by a next SDK flow (dotnet/sdk#49295). Or, otherwise, #13540 will likely fix it as well.

[Olina-Zhang]

It has been fixed in the latest, closing this bug now

[LeafShi1]

This issue appears again after PR #13612

[RussKie]

It could be the time to consider moving to the MTP (https://learn.microsoft.com/dotnet/core/testing/microsoft-testing-platform-intro).

[Youssef1313]

@LeafShi1 That's going to be a different cause then. Can you give more info please? Are you working in VS, DevKit, or command-line? Can you provide some logs? Does #13632 make any difference? Feel free to send to me internally via email or chat on Teams (ygerges@microsoft.com)

@RussKie We already migrated the repo recently to xunit.v3+MTP.

[LeafShi1]

@Youssef1313 I am working in VS, I can't get any useful information, please refer to the following animation

Building Test Projects
Executing test method: System.Windows.Forms.Tests.ClipboardTests.SetText_InvokeString_GetReturnsExpected
========== Starting test run ==========
========== Test run aborted: 0 Tests (0 Passed, 0 Failed, 0 Skipped) run in < 1 ms ==========

After adding the fix in #13632, the case can be run, but it is unstable. After running some cases, the status cannot be seen in the Test Explorer.

[Youssef1313]

@LeafShi1 Can you please try the following?

• Close VS
• Delete .vs directory
• Use my branch in Update xunit.v3 and xunit.stafact #13632 (or better, get that PR merged)
• Open VS again
• Build the solution
• Try to run tests again

If issues remain, can you please enable Trace logging for tests (press the settings icon in Test Explorer and change Logging level to Trace)

cc @drognanar