From: Tim Pease <tim.pease@...>
Date: 2007-08-16T07:00:37+09:00
Subject: Re: Unit tests and destructive methods

On 8/15/07, darren kirby <bulliver@badcomputer.org> wrote:
> Hello all,
>

Cheers!

>
> I am thinking that I need to write code which makes a copy of the reference
> file, write the changes, read the copy to ensure the changes were written
> correctly, then delete the copy.
>

That is one option. You could also look into mockfs -- it's a Ruby
library that creates a mock file system in memory, and fakes out the
Ruby kernel into using that for File.open, etc.

http://mockfs.rubyforge.org/

Blessings,
TwP