Can Microsoft Fakes be used in Visual Studio 2010?

Question

We have developers using Visual Studio 2010 professional and some trying out Visual Studio 2012. Project compatibility between the two versions has been good.

Will a Visual Studio project still be compatible with 2010 if we introduce the new Fakes Framework for unit testing?

Answer 1

Currently Microsoft Fakes does not work in VS 2010. Project will compile however tests which use Fakes throw NotSupportedException with following stack trace.

at Microsoft.QualityTools.Testing.Fakes.UnitTestIsolation.UnitTestIsolationRuntime.InvokeEvent(T value, Action`1 eh)
at Microsoft.QualityTools.Testing.Fakes.UnitTestIsolation.UnitTestIsolationRuntime.OnAttachedUnsupportedMethod(MethodBase method)
at Microsoft.QualityTools.Testing.Fakes.UnitTestIsolation.UnitTestIsolationRuntime.CheckInstrumentation(MethodBase method)
at Microsoft.QualityTools.Testing.Fakes.UnitTestIsolation.UnitTestIsolationRuntime.InternalAttachDetour(Object optionalReceiver, MethodBase method, Delegate detourDelegate)
at Microsoft.QualityTools.Testing.Fakes.UnitTestIsolation.UnitTestIsolationRuntime.AttachDetour(Object optionalReceiver, MethodBase method, Delegate detourDelegate)

I would suggest to use Moles, which is the prior version of Microsoft Fakes. Here is great article about moving from Moles to Fakes.