From: Brian Adkins <lojicdotcom@...>
Date: 2007-10-12T16:25:03+09:00
Subject: Re: Child < Parent < Test::Unit::TestCase

On Oct 12, 2:48 am, Brian Adkins <lojicdot...@gmail.com> wrote:
> On Oct 11, 11:49 pm, George <george.og...@gmail.com> wrote:
>
> > On 10/12/07, Brian Adkins <lojicdot...@gmail.com> wrote:
> > > Is there a way to instruct Test::Unit to not attempt to run tests in
> > > intermediate classes in the hierarchy?
>
> > Hi Brian,
>
> > I don't know if it's advisable or not, but one way is to undefine
> > `default_test'.
>
> >   require 'test/unit'
>
> >   class AbstractTestCase < Test::Unit::TestCase
> >     undef_method :default_test
> >   end
>
> Thanks! I just looked through testcase.rb, and your suggestion seems
> to be exactly what I was asking for. I'm satisfied with the mixin
> approach for my current scenario, but it's nice to know I have an
> option for inheritance if the need arises.
>
> Another option is to just hide the class from ObjectSpace :)  I did
> some experimenting for the heck of it and came up with the following.
> It's just a hack for fun, but can anyone come up with a better way of
> passing in the class to be hidden to the redefined each_object method
> besides the ugly $cloaked global variable? The fact that the
> definition is being evaluated in the scope of the metaclass for
> ObjectSpace kind of complicates things.
>
> require "test/unit"
>

Using a Module class variable helps a bit, but it still doesn't feel
right. Of course, that's likely because it's way too late and my brain
shut off a couple hours ago :(

class Module
  def hide_class
    Module.cloaked << self
  end

  def Module.cloaked
    @@cloaked ||= []
  end
end

class << ObjectSpace
  alias orig_each_object each_object
  def each_object(klass)
    ObjectSpace.orig_each_object(klass) do |obj|
      yield obj if !Module.cloaked.include?(obj)
    end
  end
end


>
> class ParentTest < Test::Unit::TestCase
>   hide_class
>
>   def setup
>     puts 'setup called'
>   end
>
>   def teardown
>     puts 'teardown called'
>   end
> end