December 2007
Intermediate to advanced
511 pages
13h 10m
English
Content preview from PHP Objects, Patterns, and Practice, Second Edition
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CHAPTER 18Testing with PHPUnit
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 for every unwanted effect to be easily predicted, not least because systems often combine the work of many developers. To address this ...
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