Growing Object-Oriented Software, Guided by Tests by Steve Freeman and Nat Pryce

I did not realize how much I still have to learn about writing good object-oriented (OO) code, and about hewing to a tight test driven development (TDD) methodology, before I read Growing Object-Oriented Software, Guided By Tests. My education in OO and unit testing has been largely theoretical, with no time spent directly learning from experienced OO programmers; my best mentor was a COBOL coder. Books like Design Patterns: Elements of Reusable Object-Oriented Software, Patterns of Enterprise Application Architecture, Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and Iterative Development, Xunit Test Patterns: Refactoring Test Code, and others are wonderful but have few detailed real-world business-case examples.