- Take a local copy of the Math::RPN module located in (examples/Math-RPN) and add 30 test cases. See what is Reverse Polish Notation.
- You can also look for a module on CPAN - maybe one that you are using a lot. Maybe one that you found a problem with.
- Download the tar.gz file from CPAN unzip it (don't install the module) and write at least 20 tests.