From: Caleb Clausen <vikkous@...>
Date: 2006-07-28T01:57:56+09:00
Subject: Re: Wrapped method causing infinite recursion in rcov

On 7/27/06, Pedro C�rte-Real <pedro@pedrocr.net> wrote:
>   # Wrap around get to check the markup on :success requests.
>   alias_method :old_get, :get
>   def get(*args)
>     old_get(*args)
>     if @response.success?
>       assert_valid_markup
>     end
>   end
>
> This works fine with my tests. When running rcov though it creates
> infinite recursion in the call to old_get. Has anyone tried anything
> of the sort? Is it a bug in rcov?

At a guess, (something is) rcov is also wrapping #get and using the
same name for the old version of the method. At least, that's always
been the explanation when I've encountered these 'wrapping a method
causes infinite recursion' problems. Try this way instead, it should
eliminate any possibility that your code is participating in the
recursion.

old_get=instance_method(:get)
define_method(:get) do |*args|
   old_get[*args]
   if @response.success?
     assert_valid_markup
   end
 end

This trick was originated by Mauricio Fernandez, as far as I know.