A refreshingly different approach to testing, and a mindset that complements the traditional way to look at testing. This module deserves a chapter on its own in any book on testing with perl!
A very practical way of testing code by throwing hundreds or thousands of random inputs at it. LectroTest provides a concise syntax for describing the input domain and expected output, runs the tests automatically, and prints the result in TAP, so they can be digested by Test::Harness. The documentation is excellent.