Allow setting up "overrides" for object members when mocking interfaces

[kolomanschaft]

Consider the following mock of some interface:

var mock = new Mock<IMyThing>();
mock.Setup(s => s.Equals(It.IsAny<object>())).Returns<object>(x =>
{
    if (typeof(IMyThing).IsAssignableFrom(x.GetType()))
    {
        ...
    }
    return false;
});

var myThing = mock.Object;

There is no interceptor created for the Equals() method. But since I know every object implementing IMyThing will also be an object wouldn't it be nice if I was able to do this?

[kzu]

An unintended side effect of this feature: #273

:(

[adityap]

Does this fix also include GetType() method calls?
mockSvc.Setup(svc => svc.GetType()).Returns(typeof(IMyService)); seems to be returning the Invalid setup on non-virtual error

[kolomanschaft]

GetType is not virtual. Therefore it is not possible to mock it. But why would you need this anyway? Have you considered checking types in your code viaType.IsAssignableFrom(Type)?

[adityap]

I am using .NET Core and was not sure if there is a way to call the method mentioned by you without calling GetType. Ref: http://stackoverflow.com/questions/41646964/asp-net-core-equivalent-of-type-isassignablefrom

However, I do get your point about it being not virtual.
Thanks!