Sunday, 14 December 2014

Three Steps to Code Quality via TDD

Common complaints and problems that I've both encountered and hear other developers raise when it comes to the practice of Test Driven Development are:
  • Impossible to refactor without all the tests breaking
  • Minor changes require hours of changes to test code
  • Test setup is huge, slow to write and difficult to understand
  • The use of test doubles (mocks, stubs and fakes is confusing)

Over the next three posts I will demonstrate three easy steps that can resolve the problems above. In turn this will allow developers to gain one of the benefits that TDD promises - the ability to refactor your code mercifully in order to improve code quality.

Steps

  1. Stop Making Everything Public
  2. Limit the Amount of Dependencies you Use
  3. A Unit is Not Always a Method or Class

Code quality is a tricky subject and highly subjective, however if you follow the three guidelines above you should have the ability to radically change implementation details and therefore improve code quality when needed.

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