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Why XP Emphasises Testing

publish date: 2026/06/04 11:00:1.932879 UTC

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With incremental development there is no system specification that an external testing team can use to develop system tests. What is XP's response to this problem?

XP emphasises the importance of program testing and includes an approach that reduces the chances of introducing undiscovered errors — featuring test-first development, incremental test development from scenarios, user involvement, and automated test frameworks

XP eliminates system testing entirely and relies on customer feedback after release

XP defers all testing to the acceptance stage where the customer tests using real data

XP uses an independent external testing team who write tests based on user stories

Correct Answer

Explanation

Without a system specification, some incremental development approaches have very informal testing. To avoid this, XP emphasises the importance of program testing and includes an approach with four key features: test-first development, incremental test development from scenarios, user involvement in test development and validation, and automated testing frameworks.

Reference

Software Engineering, Ian Sommerville, 9th edition

Quizzes you can take where this question appears

Testing in XP