Red-Green-Refactor

Red-Green-Refactor is a development cycle used in test-driven programming. First, “Red” means writing a test that identifies a new feature or fix, which initially fails (color red). Next, “Green” involves writing just enough code to pass the test, making the test succeed (color green). Finally, “Refactor” is optimizing and cleaning up the code without changing its behavior, improving clarity and efficiency. This approach ensures continuous testing and quality, helping developers build reliable, maintainable software step-by-step.