Michael Feathers: Working Effectively with Legacy Code (2011)

• Buy the book on Amazon (affiliate link)
• Growing Object-Oriented Software Guided by Tests taught me how to test greenfield projects, and how to approach a test-driven mindset when you explore a domain. But this book takes the practical side of writing tests and shows how to bring order to messy code.

Full reference I use in my notes:

[#feathers2011legco]: Michael C. Feathers (2011):
  _Working effectively with legacy code_,
  Upper Saddle River, NJ: Prentice Hall Professional Technical Reference.

Relevant Blog Posts

These are e.g. tagged with #design-pattern.