XCode 4 - 'Include Unit Tests'

Question

I just upgraded to XCode 4 and I was wondering if I need to 'include unit tests' when setting up an application? Also, what does that mean exactly?

Answer 1

You do not need to include unit tests.

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What does "unit testing" mean? (from the unit-testing FAQ)

Unit testing is a method by which individual units of source code are tested to determine if they are fit for use. A unit is the smallest testable part of an application. In procedural programming a unit may be an individual function or procedure. Unit tests are created by programmers or occasionally by white box testers.

Ideally, each test case is independent from the others: substitutes like method stubs, mock objects, fakes and test harnesses can be used to assist testing a module in isolation. Unit tests are typically written and run by software developers to ensure that code meets its design and behaves as intended.^Wikipedia

Unit testing is closely related to Test Driven Development.

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@ToddH points out:

It's easier to include [unit tests] when you setup the project. If you do it later there are quite a few steps involved in doing it correctly: http://twobitlabs.com/2011/06/...

Thanks for the protip, Todd!