OCUnit (also known as SenTestingKit) is a unit testing framework for Objective-C that's bundled with the XCode IDE. As a member of the xUnit family of testing frameworks, OCUnit is similar to other popular frameworks such as JUnit (for Java), and FlexUnit (for Adobe Flex).

Using OCUnit, you can combine FoneMonkey- and non-FoneMonkey-based tests into comprehensive test suites that can be invoked interactively, as well as from build scripts, and from continuous integration frameworks such as Hudson or Cruise Control. It is also possible to combine OCUnit tests with non-OCUnit (for example, JUnit) tests, and combine the output so as to provide considated test reporting across all front- and back-end components of your application.

Please note that to run FoneMonkey with OCUnit, you should not create a testing bundle. Instead, you use the FoneMonkeyOCUnit plug-in to launch your OCUnit tests cases, as described later in this section.

OCUnit test output will be written to the console. You can optionally write out the results in XML format.