CODEWITHSUNDEEP
c#autofixturensubstitute
Jim Aho
Jim Aho

Reputation: 11957

How to mock a sequence of calls to the same method to return different values in AutoFixture using NSubstitute?

I'm looking for a way to mock a method so that when called multiple times, the result is different. More specifically what i'm after, is to mock a method so that the third time it is called, I want to assert against that result.

This syntax is not correct, but simulates what I want to accomplish:

var foo = Fixture.Freeze<IFoo>();
foo.Exists(Arg.Any<object>()).Returns("firstcall").SecondCall("secondcall").ThirdCall("thirdcall");

Can you do this in AutoFixture?

EDIT: As pointed out by Mark this is a question related to NSubstitute rather than AutoFixture itself. I've updated the title.

Upvotes: 2

Views: 1529

Answers (1)

Jim Aho
Jim Aho

Reputation: 11957

I found out the answer before submitting the question, so I'll post the answer here:

Fixture.Freeze<IFoo>()
    .Exists(Arg.Any<object>())
    .Returns("default", "firstcall", "secondcall", "thirdcall");

Now when Exists() is called three times, the response will be "firstcall" then "secondcall" then "thirdcall". Any call after this will receive "default".

Upvotes: 6

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