Unit Test Adapter threw exception: Method has wrong signature

Question

Hi, I'm working with the RC of VS 2012 that was out 31-May.

All unit tests are failing with the following error message:

Unit Test Adapter threw exception: 
Method not found: 'Microsoft.VisualStudio.TestTools.Resources.EqtMessage Microsoft.VisualStudio.TestTools.Resources.Messages.UTA_MethodHasWrongSignatureResolution_ReturnType(System.Object)'..

I dug into the output and found some stacktrace:

Microsoft.VisualStudio.QualityTools.Tips.UnitTest.Adapter.dll!Microsoft.VisualStudio.TestTools.TestTypes.Unit.UnitTestExecuter.GetAssemblyInfo(System.Reflection.Assembly assembly = {unknown})
Microsoft.VisualStudio.QualityTools.Tips.UnitTest.Adapter.dll!Microsoft.VisualStudio.TestTools.TestTypes.Unit.UnitTestExecuter.GetTypeInfo(System.Type type = {unknown}, bool checkAlreadyExaminedType = {unknown})
Microsoft.VisualStudio.QualityTools.Tips.UnitTest.Adapter.dll!Microsoft.VisualStudio.TestTools.TestTypes.Unit.UnitTestExecuter.GetTypeInfo(System.Type type = {unknown})
Microsoft.VisualStudio.QualityTools.Tips.UnitTest.Adapter.dll!Microsoft.VisualStudio.TestTools.TestTypes.Unit.UnitTestExecuter.ResolveMethods()

The tests were running fine on the beta.

Can anyone help with this?

Thanks

Answer 1

Hi Noel,

Thanks for reporting the issue. Can you please share the signature of the test method you are using?

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Regards,
Vikram Agrawal,
Developer, VSTLM, Microsoft Corporation

Answer 2

Hi, Vikram,

I managed to find the solution to the problem.

Basically I deleted all the test settings files:

  Local.testsettings
  TraceAndTestImpact.testsettings
  Global.vsmdi

 restarted VS, and I was able to run the tests again.

Regards,

Noel

Answer 3

Hi, I've also encountered the issue. Noel's solution couldn't help. I've created a Connect feedback item: https://connect.microsoft.com/VisualStudio/feedback/details/757518/missingmethodexception-while-running-tests-in-vs2012-rc. It also has a workaround I've found. Hope it helps someone else.