• A software development process that relies on the repetition of a short development cycle: Requirements are turned into specific test cases, then the code is improved so that the tests pass. This is opposed to software development that allows code to be added that is not proven to meet requirements. Test-driven development is related to the “test first” programming concepts of extreme programming (XP), begun in 1999, but more recently has created more general interest in its own right. ← Wikipedia

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