This week, Pierre-Etienne suggested that we should try Cenqua Clover (http://www.cenqua.com/clover/) for Tom.

Once integrated into our build system, this code coverage tool gives many useful advices.
I wasn't convinced that code coverage can be useful, but after testing it, now I am.
Running the Tom test suite and some examples build shows many things we do not really test at all, and spots areas of improvement.