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Tests Must Pass After Integration
publish date: 2026/06/04 11:00:4.827056 UTC
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True or False: In XP, when new code is integrated into the system, it is acceptable for some existing tests to fail temporarily while the new functionality is stabilised.
Correct Answer
False
Explanation
False. In XP, all tests must be successfully executed when new code is integrated into the system. There is a short time gap between releases of the system. A new build is accepted only if all tests — both existing and new — execute successfully. Allowing existing tests to fail, even temporarily, is not acceptable under XP.
Reference
Software Engineering, Ian Sommerville, 9th edition