Pat Maddox recently defined unit testing in a tweet (and being so concise is surprisingly enlightening): "a unit test is any test that you'd be 99% happy to ha

Pat Maddox recently defined unit testing in a tweet (and being so concise is surprisingly enlightening): "a unit test is any test that you'd be 99% happy to have if it ran continuously" (http://twitter.com/patmaddox/status/23988815286 http://twitter.com/patmaddox/status/23988815286) Followed up with: "99% happy implies: fast; no false positives; flexible under code changes; catch errors as they occur" (http://twitter.com/patmaddox/status/23988868590 http://twitter.com/patmaddox/status/23988868590)