Debian has various packaging tools including package checkers and build helpers (such as Lintian and debhelper). But there are very few utilities to assist with tests of these utilties - the end result is that many tools has limited testing.
This framework is intended to end this unfortunate tendency by greatly reducing the boilerplate code and package fragments needed to build and "post process" a package. This is basically a fork of the Lintian test suite with a goal to make it useful for other programs.