> **Test-driven development** (**TDD**) is a [software development process](https://en.wikipedia.org/wiki/Software_development_process "Software development process") relying on software requirements being converted to [test cases](https://en.wikipedia.org/wiki/Test_case "Test case") before software is fully developed, and tracking all software development by repeatedly testing the software against all test cases. This is as opposed to software being developed first and test cases created later. ## See also [[Red-Green-Refactor cycle]] --- ## References - https://en.wikipedia.org/wiki/Test-driven_development