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Understanding Legacy Code with Characterization Testing

by Kurt Christensen on  Mar 31, 2007 2

Alberto Savoia has written a series of four articles describing "characterization testing" - the process of writing unit tests to understand and work with legacy code.

Easing into XP - for the Harried and Stressed

by Deborah Hartmann Preuss on  Oct 12, 2006

One can't always start from scratch with Agile - sometimes it's used to salvage troubled projects, but Emanuel Gaillot notes that "What's tough about XP is, the more you need it to get your project in a better shape, the harder it is to start doing it." Can a team really afford to switch in the middle of a troubled project? Gaillot recently shared his approach to gradual XP implementation.

InfoQ Article: Using Logging Seams for Legacy Code Unit Testing

by Floyd Marinescu on  Aug 03, 2006 3

Ian Roughley shows how to use logging seams to easily create unobtrusive unit tests around legacy classes, without needing to edit class logic as well as avoiding behavior changes.

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