Rhino Mocks, AssertWasCalled with Arg Constraint on array parameter
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by Etienne Giust
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Published on Mon, 04 Jun 2012 09:35:57 GMT
Indexed on
2012/06/04
16:44 UTC
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Today, I had a hard time unit testing a function to make sure a Method with some array parameters was called.
Method to be called :
I had previously used Arg<T>.Matches on complex types in other unit tests, but for some reason I was unable to find out how to apply the same logic with an array of strings.
It is actually quite simple to do, T really is a string[], so we use Arg<string[]>. As for the Matching part, a ToList() allows us to leverage the lambda expression.
l => l.AddUsersToRoles(
Arg<string[]>.Matches(a => a.ToList().First() == UserId.ToString())
,Arg<string[]>.Matches(a => a.ToList().First() == expectedRole1 && a.ToList()[1] == expectedRole2)
)
);
Of course, iw we expect an array with 2 or more values, the math would be something like : a => a.ToList()[0] == value1 && a.ToList()[1] == value2 … etc.
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