rspec users - Apr 2007 - mock out render call in helper

Hello,
  Does someone know where I can hook in to mock out a render call from
a helper in Rails?  I know I can do this in view specs with the
following

@controller.template.stub!(:render)

but template doesn''t seem to be attached to @controller in a helper
context.  Thanks.

-Chris

Okay, so if I use

@controller.render :foo

instead of just

render :foo

in the helper, I can mock it out fine in the specs with

@controller.stub!(:render)

Am I wrong to use the shortened "render :foo" form in the helpers, or
is this a malfunction of RSpec?

On 4/13/07, Chris Hoffman <bosshoff at gmail.com>
wrote:
> Hello,
>   Does someone know where I can hook in to mock out a render call from
> a helper in Rails?  I know I can do this in view specs with the
> following
>
> @controller.template.stub!(:render)
>
> but template doesn''t seem to be attached to @controller in a
helper
> context.  Thanks.
>
> -Chris
>

I guess this question really boils down to the following:  what are
the proper means to access the object that is including the helper
being tested?  I have been reading through the documentation, and it
indicates that calling helper_name :foo will include FooHelper in the
context.  How then can I mock out methods in this object?

In case I am not being clear: say I have the following helper

module FooHelper
  def hello
     "hello world"
  end

  def look_to_hello
      hello
  end
end

I want to make sure the "look_to_hello" method calls
"hello," without
"hello" actually being called.

Thanks.

On 4/13/07, Chris Hoffman <bosshoff at gmail.com>
wrote:
> Okay, so if I use
>
> @controller.render :foo
>
> instead of just
>
> render :foo
>
> in the helper, I can mock it out fine in the specs with
>
> @controller.stub!(:render)
>
> Am I wrong to use the shortened "render :foo" form in the
helpers, or
> is this a malfunction of RSpec?
>
> On 4/13/07, Chris Hoffman <bosshoff at gmail.com> wrote:
> > Hello,
> >   Does someone know where I can hook in to mock out a render call from
> > a helper in Rails?  I know I can do this in view specs with the
> > following
> >
> > @controller.template.stub!(:render)
> >
> > but template doesn''t seem to be attached to @controller in a
helper
> > context.  Thanks.
> >
> > -Chris
> >
>

Sorry for this stream of consciousness.  I am trying to work through a
problem, and without the benefit of being able to discuss these
situations with my colleague (who is not with the department any
longer), I find it necessary to reason through my conundrums by
writing.

Anyway, I think I have discovered the proper means to achieve what I
was talking about in previous posts.  ''self'' in the spec seems
to give
one access to the object that is including the helper being spec''d.

-Chris

On 4/13/07, Chris Hoffman <bosshoff at gmail.com>
wrote:
> I guess this question really boils down to the following:  what are
> the proper means to access the object that is including the helper
> being tested?  I have been reading through the documentation, and it
> indicates that calling helper_name :foo will include FooHelper in the
> context.  How then can I mock out methods in this object?
>
> In case I am not being clear: say I have the following helper
>
> module FooHelper
>   def hello
>      "hello world"
>   end
>
>   def look_to_hello
>       hello
>   end
> end
>
> I want to make sure the "look_to_hello" method calls
"hello," without
> "hello" actually being called.
>
> Thanks.
>
> On 4/13/07, Chris Hoffman <bosshoff at gmail.com> wrote:
> > Okay, so if I use
> >
> > @controller.render :foo
> >
> > instead of just
> >
> > render :foo
> >
> > in the helper, I can mock it out fine in the specs with
> >
> > @controller.stub!(:render)
> >
> > Am I wrong to use the shortened "render :foo" form in the
helpers, or
> > is this a malfunction of RSpec?
> >
> > On 4/13/07, Chris Hoffman <bosshoff at gmail.com> wrote:
> > > Hello,
> > >   Does someone know where I can hook in to mock out a render call
from
> > > a helper in Rails?  I know I can do this in view specs with the
> > > following
> > >
> > > @controller.template.stub!(:render)
> > >
> > > but template doesn''t seem to be attached to @controller
in a helper
> > > context.  Thanks.
> > >
> > > -Chris
> > >
> >
>

On 13 Apr 2007, at 14:54, Chris Hoffman wrote:
> module FooHelper
>   def hello
>      "hello world"
>   end
>
>   def look_to_hello
>       hello
>   end
> end
Chris,

The approach I''ve taken is to turn the support methods into methods   
on separate objects, eg (not that I''ve had this exact problem)

module FooHelper
   class Greeter
     def hello
       "hello world"
     end
   end

   def look_to_hello
     Greeter.new.hello
   end
end

You could make it "hello" class method if you''re not bothered
about
blanket stubbing.  (I tend to go with objects just in case I want to  
inject them later, rather than have them created in-place with new)

Ashley