i refer to this article from Peter Provost:
Visual Studio 2012 Fakes - Part 3 - Observing Stub Behavior
The question is if and how can i verify if the method is called with a defined parameter? For example somthing like that:
var wasCalled = observer.GetCalls().Any(call => call.StubbedMethod.Name == methodName && call.StubMethod.Parameter == "Hello there!");
I think this is what you need.
var wasCalled = observer.GetCalls().Any(call => call.StubbedMethod.Name == methodName && (string)call.GetArguments() == "Hello there!");
HTH Patrick Tseng Microsoft ALM team