Exception message: Microsoft.Moles.Framework.Moles.MoleInvalidOperationException: Moles requires tests to be an instrumented process

If you are new to Pex & moles like me, you may encounter this exception while mocking any property. I have mocked one of our Dictionary and received this exception. The cause is missing one attribute on the test method.


If you are in Visual Studio Unit test and using Pex & Moles, then use the attribute HostType for the method.


[HostType(“Moles”)]public void UnloadAfterDequeue04()




About ambilykk

I am a Technology Evangelist on Microsoft Technologies. I am carrying the passion on Microsoft technologies specifically on web technologies such as ASP .Net and Ajax. My interests also include Azure and Visual Studio. Technology adoption and learning is my key strength and technology sharing is my passion.
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