6. Framework for Integrated Test: Beauty Through Fragility

Michael Feathers

I have some ideas about what good design is. Every programmer does. We all develop these ideas through practice, and we draw on them as we work. If we're tempted to use a public variable in a class, we remember that public variables are usually a symptom of bad design, and if we see implementation inheritance, we remember that we should prefer delegation to inheritance.^[4]

^[4] Design Patterns: Elements of Reusable Object-Oriented Software, Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides, Addison-Wesley, 1995.