CCP:The Common Closure Principle. For courses in Object-Oriented Design, C++ Intermediate Programming, and Object-Oriented Programming. CRP:The Common Reuse Principle. The idea of test-driven development is hit & miss because most companies will not allow testers to drive product development For courses in Object-Oriented Design, C++ Intermediate Programming, and Object-Oriented n for software engineers “in the trenches,” this text focuses on the technology—the principles, patterns, and process—