TDD means writing tests before code At a very high level: Write the most basic case and it will fail (no code written). Write code so the test passes. Now wr

TDD means writing tests before code At a very high level: Write the most basic case and it will fail (no code written). Write code so the test passes. Now write another test that will fail. Then write code so that tests passes. It forces you to write code in a way that is testable and you catch any regressions if previous tests fail. In the end... you shouldn't.... write any code that isn't required to pass a test.