Programming Tools: Refactoring
"Refactoring is the process of modifying code without affecting either its input or output; that is, the code's interface remains the same. How do we know that refactoring works? The only objective way to find the answer is by testing the code before and after refactoring occurs. The results should match exactly. This makes testing an integral part of any refactoring effort--you cannot successfully separate the two."
(Submitted by Noel Thu Feb 10, 2005 )
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