Mocking Guid.NewGuid()

Question

Suppose I have the following entity:

public class User
{
    public int Id { get; set; }
    public string Username { get; set; }
    public Guid UserGuid {          


        

Answer 1

If you are using Moq, you can use:

mockGuidService.SetupSequence(gs => gs.NewGuid())
    .Returns( ...some value here...)
    .Returns( ...another value here... );

I suppose you could also do the following:

mockGuidService.Setup(gs => gs.NewGuid())
    .Returns(() => ...compute a value here...);

Still, unless you are just supplying a random value within the return function, knowledge of order still seems to be important.