iOS / MonoTouch MonoTouch recently gained an on-device unit testing framework. And unlike the Windows Phone version, this one is officially supported.

Unit tested code reduces the defect density in an application. The motive of this article is not to elucidate the benefits of unit testing (see references for that), but to provide a collection of ...

JUnit and NUnit are open source unit testing frameworks; the former for Java applications, the latter for .Net programs.

Unit testing is a fine-grained technique for finding bugs. Here's how to apply it to C++ projects.