Resources

• "Endo-Testing: Unit Testing with Mock Objects," by Tim Mackinnon, Steve Freeman, and Philip Craig, is the paper that introduced the term mock objects.
  
  
• The Mock Objects Project is a framework that supports the implementation of mock objects.
  
  
• The source of the factory method and abstract factory design patterns is Design Patterns: Elements of Reusable Object-Oriented Software (Addison-Wesley, 1997) by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides -- also known as the Gang of Four.
  
  
• If you're new to the world of design patterns, you may also want to take this free, two-part tutorial:
  • Java design patterns 101 (developerWorks, January 2002) introduces patterns.
  • Java design patterns 201 (developerWorks, April 2002) takes you beyond the patterns described by the Gang of Four.
  
  
• Read this online write-up of The Factory Method Design Pattern.
  
  
• The Refactoring Home Page maintained by Martin Fowler is a great resource for tidy programmers.
  
  
• In addition, Refactoring: Improving the Design of Existing Code (Addison-Wesley, 1999) by Martin Fowler makes for good reading.
  
  
• JUnit is the most popular unit-testing framework for the Java language.
  
  
• Check out the XP and Refactoring resource list at Purple Technology.
  
  
• The Demystifying Extreme Programming column by XP coach and Java developer Roy Miller offers insight into this methodology, in which testing is a critical component. Don't miss the accompanying discussion forum.
  
  
• Nicholas Lesiecki's "Test Flexibly with AspectJ and mock objects" (developerWorks, May 2002), details using AspectJ and mock objects when unit testing.
  
  
• "Diagnosing Java code: Unit tests and automated code analysis working together" by Eric Allen (developerWorks, October 2002) examines the relationship between unit testing and static analysis.
  
  
• The WebSphere Developer Domain offers a look at unit testing with JUnit in "Application Quality Assurance: Unit Testing."
  
  
• "Debugging and Unit-Testing Server-Side Web Applications," also from the WebSphere Developer Domain, describes a scenario for server-side Web development that includes interactive debugging and iterative unit testing.
  
  
• Find hundreds more Java technology articles and tutorials on the developerWorks Java technology zone.