System.TypeLoadException: Could not load type of field 'Microsoft.VisualStudio.TestPlatform.ObjectModel.PlatformEqtTrace:TraceSourceLevelsMap' (1) due to

[Romfos]

Hi,

MSTest v3 Stop working for linux

Nuget:

<PackageReference Include="MSTest" Version="3.1.1" />

Build link link:
https://github.com/Romfos/AutoTests.Framework/actions/runs/5866367920/job/15905047692

Testhost process for source(s) '/home/runner/work/AutoTests.Framework/AutoTests.Framework/src/AutoTests.Framework.Tests/bin/Debug/net462/AutoTests.Framework.Tests.dll' exited with error: Unhandled Exception:
System.TypeInitializationException: The type initializer for 'Microsoft.VisualStudio.TestPlatform.ObjectModel.EqtTrace' threw an exception. ---> System.TypeLoadException: Could not load type of field 'Microsoft.VisualStudio.TestPlatform.ObjectModel.PlatformEqtTrace:TraceSourceLevelsMap' (1) due to: Could not resolve type with token 01000019 from typeref (expected class 'System.Diagnostics.TraceLevel' in assembly 'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e0[89](https://github.com/Romfos/AutoTests.Framework/actions/runs/5866367920/job/15905047692#step:5:90)') assembly:System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 type:System.Diagnostics.TraceLevel member:(null)
   --- End of inner exception stack trace ---
  at Microsoft.VisualStudio.TestPlatform.TestHost.Program.Main (System.String[] args) [0x00033] in <af8fc7b1c76049579919cce3f8e01556>:0 
Error:  FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: The type initializer for 'Microsoft.VisualStudio.TestPlatform.ObjectModel.EqtTrace' threw an exception. ---> System.TypeLoadException: Could not load type of field 'Microsoft.VisualStudio.TestPlatform.ObjectModel.PlatformEqtTrace:TraceSourceLevelsMap' (1) due to: Could not resolve type with token 01000019 from typeref (expected class 'System.Diagnostics.TraceLevel' in assembly 'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089') assembly:System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 type:System.Diagnostics.TraceLevel member:(null)
   --- End of inner exception stack trace ---
  at Microsoft.VisualStudio.TestPlatform.TestHost.Program.Main (System.String[] args) [0x00033] in <af8fc7b1c76049579[91](https://github.com/Romfos/AutoTests.Framework/actions/runs/5866367920/job/15905047692#step:5:92)9cce3f8e01556>:0 
. Please check the diagnostic logs for more information.

[bejax]

Run into the same problem, but I think it's more likely to be a problem with vstest, see issue #4657.

[Evangelink]

Hi @Romfos,

Was the code working before? Have you only bumped MSTest or have you changed something else (e.g. version of VS, version of test SDK...)? I see you are using net462, are you using the AppDomain feature?

Is it possible to have a small reproducer for us to investigate the issue?

[Romfos]

Hi @Evangelink , yes, please:

repo
https://github.com/Romfos/mstest-repo

build:
https://github.com/Romfos/mstest-repo/actions/runs/5961090424/job/16169633189

note: looks like issue started after .net sdk latest patch applying

[Evangelink]

Thanks for the quick reply, I confirm that I can repro the issue (only on Linux and net462):

I will investigate the issue.

[Evangelink]

I have transfered the issue to vstest repo because I have confirmed issue is linked to it. Uninstalling .NET 7 fixes the issue.

[nohwnd]

This is probably the same issue as #4549 and #4627, we inserted fix for that into servicing on 7.0.401, and it should be in the next service release. (this has links to the insertion pr #4549 (comment))