Hi,
I am not sure what your scenario is; basically Isolator provides support for faking out and verifying non public calls using the NonPublic APIs:
Isolate.NonPublic.WhenCalled(fake, "PrivateMethod").WillReturn(3);
Isolate.Verify.NonPublic.WasCalled(fake, "PrivateMethod");
Using these APIs you can control behavior and assert interaction on non-public methods and properties.
Does this answer your question?
Doron
Typemock Support