RadLib
RadLib is a collection of Lua utility functions for Corona SDK development.
The original tests were written in Test::More, but I have started rewriting them in busted (http://olivinelabs.com/busted/). If you want to contribute and learn Lua testing at the same time, the easiest way to do so is by helping out in rewriting the tests.
Credits
This code is MIT licensed, see http://developer.coronalabs.com/code/license