From: Nikolai Weibull <nikolai.weibull@...>
Date: 2009-10-02T22:00:10+09:00
Subject: Re: Config.datadir during testing

On Oct 1, 8:12 pm, "nikolai.weib...@gmail.com"
<nikolai.weib...@gmail.com> wrote:
> How do I deal with Config.datadir during testing?  I don’t want it to
> point to where the Gem will be, once it has been installed, but to the
> ”data” directory in my current work directory.
>
> I figured that I’d override Config.datadir
>
> module Config
>   def self.datadir(package)
>     parts = File.expand_path('.').split(/[#{Regexp.escape
> (File::SEPARATOR + File::ALT_SEPARATOR)}]/)
>     until parts.empty?
>       break if parts.last == package
>     end
>     return <what>(package) if parts.empty?
>     parts.push 'data', package
>     File.join(*parts)
>   end
> end
>
> but the question is what I should replace <what> with.  I first
> figured I’d do
>
> module ConfigWrapper
>   def self.datadir(package)
>     parts = File.expand_path('.').split(/[#{Regexp.escape
> (File::SEPARATOR + File::ALT_SEPARATOR)}]/)
>     until parts.empty?
>       break if parts.last == package
>     end
>     return super(package) if parts.empty?
>     parts.push 'data', package
>     File.join(*parts)
>   end
> end

OK, I’m a fucking moron.  That should be

while last = parts.pop
  break if last == package
end

Still, it would be nice to see alternative solutions to this.