Originally a student in informatics, mathematics, and digital signal processing, Christian Johansen has spent his professional career specializing in web and front-end development with technologies such as JavaScript, CSS, and HTML using agile practices. A frequent open source contributor, he blogs about JavaScript, Ruby, and web development at cjohansen.no. Christian works at Shortcut, a Norwegian software company.
TDD is an iterative development process where each iteration starts by writing a test which forms a part of the specification we are implementing. The short iterations allow for more instant feedback on the code we are writing, and bad design decisions are easier to catch. By writing the tests prior to any production code, good unit test coverage comes with the territory, but that is merely a welcome side-effect.
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