rspec users - Oct 2007 - stub actions that depend on the parameter

Hi,
I''m pretty new to all related to bdd and rspec and I have the following
question. Is it possible to stub actions that return different objects
depending on the parameteres they were called with? Something like this:

MyClass.stub!(:method).with(1).and_return(@mock_object_1)
MyClass.stub!(:method).with(2).and_return(@mock_object_2)

I know I could use MyClass.stub!(:method).and_return(@mock_object_1,
@mock_object_2) so the first time the :method method is called, it would
return the first object and then the second one, but the problem is that
I cannot guarantee the order it will be called inside the model.

Thanks in advance

-- 
/**
 * dagi3d v4 | http://dagi3d.net
 */

On 10/8/07, Borja Mart?n <borjam at dagi3d.net>
wrote:
> Hi,
> I''m pretty new to all related to bdd and rspec and I have the
following
> question. Is it possible to stub actions that return different objects
> depending on the parameteres they were called with?Something like this:
>
> MyClass.stub!(:method).with(1).and_return(@mock_object_1)
> MyClass.stub!(:method).with(2).and_return(@mock_object_2)
What happened when you tried this?
>
> I know I could use MyClass.stub!(:method).and_return(@mock_object_1,
> @mock_object_2) so the first time the :method method is called, it would
> return the first object and then the second one, but the problem is that
> I cannot guarantee the order it will be called inside the model.
>
> Thanks in advance
>
> --
> /**
>  * dagi3d v4 | http://dagi3d.net
>  */
>
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
>

David Chelimsky escribi?:
> On 10/8/07, Borja Mart?n <borjam at dagi3d.net> wrote:
>   
>> Hi,
>> I''m pretty new to all related to bdd and rspec and I have the
following
>> question. Is it possible to stub actions that return different objects
>> depending on the parameteres they were called with?Something like this:
>>
>> MyClass.stub!(:method).with(1).and_return(@mock_object_1)
>> MyClass.stub!(:method).with(2).and_return(@mock_object_2)
>>     
>
> What happened when you tried this?
>
>   
I become an error like this:
...
undefined method `with'' for
#<Spec::Mocks::MethodStub:0xb6f20858>
>> I know I could use MyClass.stub!(:method).and_return(@mock_object_1,
>> @mock_object_2) so the first time the :method method is called, it
would
>> return the first object and then the second one, but the problem is
that
>> I cannot guarantee the order it will be called inside the model.
>>
>> Thanks in advance
>>
>> --
>> /**
>>  * dagi3d v4 | http://dagi3d.net
>>  */
>>
>> _______________________________________________
>> rspec-users mailing list
>> rspec-users at rubyforge.org
>> http://rubyforge.org/mailman/listinfo/rspec-users
>>
>>     
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
>   

-- 
/**
 * dagi3d v4 | http://dagi3d.net
 */

On 10/8/07, Borja Mart?n <borjam at dagi3d.net>
wrote:
>
> David Chelimsky escribi?:
> > On 10/8/07, Borja Mart?n <borjam at dagi3d.net> wrote:
> >
> >> Hi,
> >> I''m pretty new to all related to bdd and rspec and I have
the following
> >> question. Is it possible to stub actions that return different
objects
> >> depending on the parameteres they were called with?Something like
this:
> >>
> >> MyClass.stub!(:method).with(1).and_return(@mock_object_1)
> >> MyClass.stub!(:method).with(2).and_return(@mock_object_2)
> >>
> >
> > What happened when you tried this?
> >
> >
> I become an error like this:
> ...
> undefined method `with'' for
#<Spec::Mocks::MethodStub:0xb6f20858>
OK - that makes sense - you''re probably using the latest release
rather than the trunk. The trunk has been modified to support what
you''re trying to do.

In the mean time, you could use should_receive to get the same effect.
It won''t care about order, but it will care that the message is
received at one point.

That help?
> >> I know I could use
MyClass.stub!(:method).and_return(@mock_object_1,
> >> @mock_object_2) so the first time the :method method is called, it
would
> >> return the first object and then the second one, but the problem
is that
> >> I cannot guarantee the order it will be called inside the model.
> >>
> >> Thanks in advance
> >>
> >> --
> >> /**
> >>  * dagi3d v4 | http://dagi3d.net
> >>  */
> >>
> >> _______________________________________________
> >> rspec-users mailing list
> >> rspec-users at rubyforge.org
> >> http://rubyforge.org/mailman/listinfo/rspec-users
> >>
> >>
> > _______________________________________________
> > rspec-users mailing list
> > rspec-users at rubyforge.org
> > http://rubyforge.org/mailman/listinfo/rspec-users
> >
>
>
> --
> /**
>  * dagi3d v4 | http://dagi3d.net
>  */
>
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
>

Hi,
I''ll give a try to the trunk version. Thanks for such a quick reply.

Regards.

David Chelimsky escribi?:
> On 10/8/07, Borja Mart?n <borjam at dagi3d.net> wrote:
>   
>> David Chelimsky escribi?:
>>     
>>> On 10/8/07, Borja Mart?n <borjam at dagi3d.net> wrote:
>>>
>>>       
>>>> Hi,
>>>> I''m pretty new to all related to bdd and rspec and I
have the following
>>>> question. Is it possible to stub actions that return different
objects
>>>> depending on the parameteres they were called with?Something
like this:
>>>>
>>>> MyClass.stub!(:method).with(1).and_return(@mock_object_1)
>>>> MyClass.stub!(:method).with(2).and_return(@mock_object_2)
>>>>
>>>>         
>>> What happened when you tried this?
>>>
>>>
>>>       
>> I become an error like this:
>> ...
>> undefined method `with'' for
#<Spec::Mocks::MethodStub:0xb6f20858>
>>     
>
> OK - that makes sense - you''re probably using the latest release
> rather than the trunk. The trunk has been modified to support what
> you''re trying to do.
>
> In the mean time, you could use should_receive to get the same effect.
> It won''t care about order, but it will care that the message is
> received at one point.
>
> That help?
>
>   
>>>> I know I could use
MyClass.stub!(:method).and_return(@mock_object_1,
>>>> @mock_object_2) so the first time the :method method is called,
it would
>>>> return the first object and then the second one, but the
problem is that
>>>> I cannot guarantee the order it will be called inside the
model.
>>>>
>>>> Thanks in advance
>>>>
>>>> --
>>>> /**
>>>>  * dagi3d v4 | http://dagi3d.net
>>>>  */
>>>>
>>>> _______________________________________________
>>>> rspec-users mailing list
>>>> rspec-users at rubyforge.org
>>>> http://rubyforge.org/mailman/listinfo/rspec-users
>>>>
>>>>
>>>>         
>>> _______________________________________________
>>> rspec-users mailing list
>>> rspec-users at rubyforge.org
>>> http://rubyforge.org/mailman/listinfo/rspec-users
>>>
>>>       
>> --
>> /**
>>  * dagi3d v4 | http://dagi3d.net
>>  */
>>
>> _______________________________________________
>> rspec-users mailing list
>> rspec-users at rubyforge.org
>> http://rubyforge.org/mailman/listinfo/rspec-users
>>
>>     
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
>   

-- 
/**
 * dagi3d v4 | http://dagi3d.net
 */

On Oct 8, 2007, at 2:23 PM, David Chelimsky wrote:
> On 10/8/07, Borja Mart?n <borjam at dagi3d.net> wrote:
>>
>> David Chelimsky escribi?:
>>> On 10/8/07, Borja Mart?n <borjam at dagi3d.net> wrote:
>>>
>>>> Hi,
>>>> I''m pretty new to all related to bdd and rspec and I
have the
>>>> following
>>>> question. Is it possible to stub actions that return different
>>>> objects
>>>> depending on the parameteres they were called with?Something  
>>>> like this:
>>>>
>>>> MyClass.stub!(:method).with(1).and_return(@mock_object_1)
>>>> MyClass.stub!(:method).with(2).and_return(@mock_object_2)
>>>>
>>>
>>> What happened when you tried this?
>>>
>>>
>> I become an error like this:
>> ...
>> undefined method `with'' for
#<Spec::Mocks::MethodStub:0xb6f20858>
>
> OK - that makes sense - you''re probably using the latest release
> rather than the trunk. The trunk has been modified to support what
> you''re trying to do.
What is the syntax for that?

Scott

On 10/8/07, Scott Taylor <mailing_lists at railsnewbie.com>
wrote:
>
> On Oct 8, 2007, at 2:23 PM, David Chelimsky wrote:
>
> > On 10/8/07, Borja Mart?n <borjam at dagi3d.net> wrote:
> >>
> >> David Chelimsky escribi?:
> >>> On 10/8/07, Borja Mart?n <borjam at dagi3d.net> wrote:
> >>>
> >>>> Hi,
> >>>> I''m pretty new to all related to bdd and rspec
and I have the
> >>>> following
> >>>> question. Is it possible to stub actions that return
different
> >>>> objects
> >>>> depending on the parameteres they were called
with?Something
> >>>> like this:
> >>>>
> >>>> MyClass.stub!(:method).with(1).and_return(@mock_object_1)
> >>>> MyClass.stub!(:method).with(2).and_return(@mock_object_2)
> >>>>
> >>>
> >>> What happened when you tried this?
> >>>
> >>>
> >> I become an error like this:
> >> ...
> >> undefined method `with'' for
#<Spec::Mocks::MethodStub:0xb6f20858>
> >
> > OK - that makes sense - you''re probably using the latest
release
> > rather than the trunk. The trunk has been modified to support what
> > you''re trying to do.
>
> What is the syntax for that?
Just like Borja suggested:

MyClass.stub!(:method).with(2).and_return(@mock_object_2)

This is tricky though - it does NOT pass through other requests -
simply ignores them. So if you do this, you must stub! every possible
set of args.
>
> Scott
>
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
>