[Zope] How to access the content of a file in a test suite in a portable way

[Marco Bizzarri]

Hi all.

I'm writing a number of acceptance tests where I need to compare
whether the content of a text file is equals to another file.

The comparision files are in a subdirectory of the acceptance test
directory itself, therefore, once I know where my product is on the
filesystem, I can access the test files from there.

What is the accepted way to do know the directory of a product?

Regards
Marco

-- 
Marco Bizzarri
http://notenotturne.blogspot.com/
http://iliveinpisa.blogspot.com/