JUnit3 | JUnit 4 | TestNG variations [Selenium Users]

History of Unit Testing Frameworks:

sUnit  |  ~1998, Kent Beck [for Smalltalk]
JUnit  |  ~2000, Kent Beck & Erich Gamma [Latest 3.x: 3.8.2 (March 2006)]
TestNG     |  ~2004 [Latest: 5.8 (March 2008)]
JUnit 4.x |  2006 [Latest: 4.5 (August 2008)]

Handling expected Exceptions

Test class | Methods

SetUp | Teardown