On Dec 4, 2011, at 7:48 AM, Ants Pants wrote:
> Hello everyone,
>
> I am trying to do the following ....
>
> before(:each) do
> @valid_attributes = {:foo => 'bar'}
> @event_type = event_category.event_types.build(@valid_attributes)
> $stderr.puts "**** #{@event_type.class} *****"
> end
>
> let (:event_category) { mock_model(EventCategory).as_null_object }
>
> and the problem I'm having is that @event_type is coming back as
> EventCategory and not EventType.
>
> Because of this problem, I thought, eh, I didn't know Rails did that! So I
> checked use of .build in the real code and it does return EventType.
>
> I'm obviously doing something stupidly wrong in the test but I just can't
> figure it out.
>
> Any pointers would be greatly appreciated, thank you.
event_category is a mock_model, not an EventCategory. Since it's declared
as_null_object, when it receives :event_types, it returns itself, and then does
the same for :build. So it's not really even an EventCategory: it's a the same
mock_model object, which is designed to lie about it's class in order to be
able to work with form builders.
HTH,
David
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