How to validate Shell navigation in unit tests?

[rthanga1]

In my view model, on a button click, using command, I navigate to a different screen using Shell.
Like this:
Shell.Current.GoToAsync("//HomePage");

But since Shell.Current is null when I run unit test, the tests crashes and fails. How do I validate Shell naviation in the ViewModel when used with Shell?

[Saccomani]

the best way is use a INavigationService and inside call the shell navigation methods, in my case I create a current page property and when I am using the unit test I skip the shell...

[Saccomani]

something like this