JUnit was developed by Kent Beck and Erich Gamma. Beck is an exponent of patterns and Extreme Programming (XP); Gamma is one of the authors of the celebrated design patterns book.
You can download the source code and documentation for JUnit from http://www.junit.org.
JUnit has several packages:
framework for the basic framework,
runner for some abstract classes for running tests,
textui and swingui for user interfaces,
extensions for some useful additions to the framework.
Copyright © 1998-2009 Dilvan Moreira