CallBase.ExpectCall not work as expected.

Hi,

I try to check if the base method was called. I try to use the CallBase.ExpectCall method, it doesn't work as expected. However if I use CallBase.ExpectAndThrow method, an exception was throw as expected. Please Advice.

public class BaseClass
        {
            public int someValue = 0;

            public virtual void Initialize()
            {
                someValue++;
            }
        }

        public class DerivedClass : BaseClass
        {
            public override void Initialize()
            {
                /* The Unit test is trying to check if the base.Initialize() was called */
                // base.Initialize();
                someValue++;
            }
        }

        [TestMethod]
        public void Test()
        {
            Mock<DerivedClass> mock = MockManager.Mock<DerivedClass>();
            // mock only BaseClass.SomeMethod when called from a DerivedClass Type.
            mock.CallBase.ExpectCall("Initialize");
            DerivedClass d = new DerivedClass();
            d.Initialize();
            // This always passed, expected to fail since the Initialize method in the base was not called after it being commented
            mock.Verify();
        }