Google's framework for writing C++ tests on a variety of platforms
(Linux, Mac OS X, Windows, Cygwin, Windows CE, and Symbian).

Based on the xUnit architecture. Supports automatic test discovery,
a rich set of assertions, user-defined assertions, death tests,
fatal and non-fatal failures, type-parameterized tests, various
options for running the tests, and XML test report generation.

WWW: http://code.google.com/p/googletest/