How do I test Relaycommand?

I'm reading this

MSDN Article about MVVM. I'm currently looking at the RelayCommand in figure #15. Pretend I wanted to test this SaveCommand. How开发者_运维技巧 would I do that? I'm using NUnit and Rhino Mocks 3.6

RelayCommand is just another ICommand implementation, so to fire the command you just call Execute() on the relay command instance that is exposed by your viewmodel, and pass in any args.

Since the SaveCommand you mention takes no args you can fire it with:

MyViewModel.SaveCommand.Execute(null);