Artifact: XP Unit Test
Used to ensure that a specific functionality of a component of the system is working properly.

An XP Unit Test is written by developers to ensure that all system components work as expected. XP Unit Test give the developers the confidence to modify the system and feel confident that everything still works.

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Main Description

XP Unit Tests are usually implemented at the class level (in OO languages) and test the public interface. For every class in the system, a test class exists. Popular test frameworks are available usually for free (such as JUnit, CppUnit, CppUnitLite, NUnit). These are simple tools that help the developer to organize and run unit tests. These tests drive the programmer development and tell the programmer that the code works as the programmer expects.

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