Test::Fixme

http://search.cpan.org/~evdb/Test-Fixme/lib/Test/Fixme.pm

It is common to litter your code with comments that say something like '# FIXME - this will not work on Tuesdays'. It is also common toforget that these comments are there. Test::Fixme allows you to add a simple file to your tests that will catch them for you.