What exactly IS a unit test?

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Unit testing From Wikipedia, the free encyclopedia (Redirected from Unit test) Jump to: navigation, search

In computer programming, unit testing is a method of testing that verifies the individual units of source code are working properly. A unit is the smallest testable part of an application. In procedural programming a unit may be an individual program, function, procedure, etc., while in object-oriented programming, the smallest unit is a method, which may belong to a base/super class, abstract class or derived/child class.

Ideally, each test case is independent from the others; Double objects like stubs, mock or fake objects[1] as well as test harnesses can be used to assist testing a module in isolation. Unit testing is typically done by software developers to ensure that the code other developers have written meets software requirements and behaves as the developer intended.