I don't believe I understand entirely what you're wanting to do...I've
provided an example below that works, but I fear might not do what you want
since it's a bit unclear to me. It sounds like if you're successful in
setting up what you're requesting all you'll be testing is RhinoMocks and
not your class. Please clarify further
[TestFixture]
public class TestForFabian
{
[Test]
public void TestIFilter()
{
// Arrange
var filterMock = MockRepository.GenerateMock<IFilter>();
var list = new List<string> {"one", "two", "three"};
filterMock.Expect(mock => mock.Filter(list)).Return(list);
// Act
var returnedList = filterMock.Filter(list);
// Assert
Assert.That(returnedList, Is.EqualTo(list));
}
}
public interface IFilter
{
List<string> Filter(List<string> items);
}
On Thu, Mar 5, 2009 at 4:45 AM, Fabian Schmied <[email protected]>wrote:
>
> I have the following interface method declaration:
>
> public interface IFilter
> {
> List<string> Filter (List<string> items);
> }
>
> And I want to create a mock filter object that:
> - checks the argument, and then
> - returns the argument passed to it.
>
> var filterMock = MockRepository.GenerateMock<IFilter>();
> filterMock
> .Expect (mock => mock.Filter(Arg<List<string>>.List.ContainsAll (...)))
> .Return (???);
>
> Is there nothing I can pass as "???" to make the mock return the same
> argument that was passed to it? Note that I don't want to set up a
> "fake" result to return from the mock.
>
> Things I've tried:
> - "Do (mi => mi.ReturnValue = mi.Arguments[0])" to set the return
> value; this doesn't work ("Method '...' requires a return value or an
> exception to throw.").
> - "Callback (...)", but this doesn't work together with the
> constraints, so I have to do the argument checking by hand (which I
> find isn't nice).
> - "Arg.Matches (items => { storedItems = items; return items.Contains
> (...); })", so that I could do "Return (storedItems)", but this
> doesn't work as Arg.Matches requires a LINQ Expression, not simply a
> delegate. And the assign statement cannot be transformed into an
> Expression.
>
> Any other ideas?
>
> (This is Rhino Mocks RC 3.5.0.2. Telling me that newer versions have a
> feature for this would also work :) )
>
> Fabian
>
> >
>
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