gmane.comp.lang.ruby.rails

Mark Dodwell | 16 May 19:48

Mocking Plugins


I'm using rspec on a current rails project and one of the plugins I'm
using (Paperclip) uploads file attachments for a model to S3. This
obviously slows the tests down somewhat, and I would like to remove this
altogether by stubbing -- the question is what should I be stubbing?

Should I stub the upload method in the plugin class or do it in the
model class?

Any advice?

Thanks,

~ Mark
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Phlip | 16 May 20:47

Re: Mocking Plugins


Mark Dodwell wrote:
> I'm using rspec on a current rails project and one of the plugins I'm
> using (Paperclip) uploads file attachments for a model to S3. This
> obviously slows the tests down somewhat, and I would like to remove this
> altogether by stubbing -- the question is what should I be stubbing?
> 
> Should I stub the upload method in the plugin class or do it in the
> model class?

Whip out Mocha (or the other leading mocker), and stub the lowest call in your 
own code; the first call into the library code.

(This is generic advice how to mock!)

We do it like this:

   def toast_hit_real_server
      obj = assemble
      obj.activate  #  hits a server
      p obj.response
   end

   def test_hit_mock_server
      obj = assemble
      Paperclip.any_instance.expects(:upload).returns(:I_Likes)
      obj.activate  #  hits the mock
      assert{ obj.response == :I_Likes }
   end

(Continue reading)

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AndyV | 16 May 22:10

Re: Mocking Plugins


This is Phlips area!  Phlip did you pay him to ask this???

No real need to roll to Mocha, though, except for preference.  rspec's
mocking capabilities are pretty similar (though I personally find it's
syntax much prettier).

On May 16, 2:47 pm, Phlip <phlip2...@...> wrote:
> Mark Dodwell wrote:
> > I'm using rspec on a current rails project and one of the plugins I'm
> > using (Paperclip) uploads file attachments for a model to S3. This
> > obviously slows the tests down somewhat, and I would like to remove this
> > altogether by stubbing -- the question is what should I be stubbing?
>
> > Should I stub the upload method in the plugin class or do it in the
> > model class?
>
> Whip out Mocha (or the other leading mocker), and stub the lowest call in your
> own code; the first call into the library code.
>
> (This is generic advice how to mock!)
>
> We do it like this:
>
>    def toast_hit_real_server
>       obj = assemble
>       obj.activate  #  hits a server
>       p obj.response
>    end
>

(Continue reading)