Different Styles of TDD

Uncle Bob's rules of TDD: http://blog.jeffreyfredrick.com/2008/06/27/blog-recursion/

Michael Feather's rules of unit tests: http://www.artima.com/weblogs/viewpost.jsp?thread=126923

BY SPEED

  1. Quick Test (in CI: 100 tests/sec)
  2. Slow Test

BY TEST DOUBLE

  1. Stub
  2. Mocks
     steve freeman - paper/newsletter - mock is not for testing, but interface discovery
     i.e always write adapter to talk to 3rd party library
  3. Object Mother

Types of Test Doubles: http://xunitpatterns.com/Test%20Double.html

BY LEVELS

  1. Atomic - test double
  2. Molecular - a few classes together
  3. Integration
  4. Functional / Acceptance

BY ASSERTION TYPE

  1. example
  2. theory

Randomized test data/Theories: http://xunitpatterns.com/Test%20Double.html

DEV: does the work code as dev expect QA/TESTER: does the app work as client expect