Every component in a system depends for its continued smooth running on the consistency of operation and interface of its peers. By definition, then, development breaks systems. As you improve your classes and packages, you must remember to amend any code that works with them. For some changes, this can create a ripple effect, affecting components far away from the code you originally changed. Eagle-eyed vigilance and an encyclopedic knowledge of a system’s dependencies can help to address this problem. Of course, while these are excellent virtues, systems soon grow too complex ...
© Matt Zandstra 2016
MATT ZANDSTRA, PHP Objects, Patterns, and Practice, 10.1007/978-1-4842-1996-6_18
18. Testing with PHPUnit
Matt Zandstra1
(1)Liverpool, Merseyside, UK
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