Test Double is generic term for fakes, mocks, stubs, dummies and spies.| martinfowler.com
Design Patterns and Refactoring articles and guides. Design Patterns video tutorials for newbies. Simple descriptions and full source code examples in Java, C++, C#, PHP and Delphi.| sourcemaking.com
Source code: Lib/unittest/__init__.py(If you are already familiar with the basic concepts of testing, you might want to skip to the list of assert methods.) The unittest unit testing framework was ...| Python documentation