Problem when swapping WPF-Controls

Hi,

In order to fake an instance of class which implements an interface you ought to use Fake.NextInstance like this :

        [TestMethod]
        [Isolated]
        public void TestMethod()
        {
            var class1 = new Class1();
            Isolate.WhenCalled(() => class1.OtherConsole(null)).IgnoreCall();
            var fake = Isolate.Fake.NextInstance<XTabItem>();
            class1.DoSomething();
            Isolate.Verify.WasCalledWithExactArguments(() => class1.OtherConsole("ASF"));
        }
    }

Fake.NextInstance lets you fake a future instance of concrete class or some interface this class implements.
Notice that var fake = Isolate.Fake.NextInstance<ITabItem>(); also works.

Second thing, we currently don't support faking mscorlib, it means trying to fake
Console's method call directly is impossible.
I can add this to our features list by request.

To workaround this problem i wrapped the Console.Writeline like this :

public class Class1
    {
        public void DoSomething()
        {
            var tabitem = new XTabItem() {Header = "ASF"};
            XYZ(tabitem);
        }
        public void XYZ(XTabItem tabitem)
        {
            OtherConsole(tabitem.Header);
        }
        public void OtherConsole(string msg)
        {
            Console.Write(msg)
        }
    }

Let me know if that helped you.