superpowers-tdd

Test-driven development is enforced by defining a failing test, confirming the red failure, implementing minimal code to pass, and refactoring while keeping tests green. This prevents untested features from entering production.

The red-green-refactor cycle is a test-first workflow where you write a failing test, implement minimal code to pass it, and clean up the code without changing behavior. This reduces regressions and improves overall code quality.

To start writing tests before production code for a bug fix, define a failing test that captures the expected behavior, run the tests to confirm the failure, and then implement the minimal code required to make the test pass.

Yes, test-first development applies to refactoring across software projects. You ensure testing precedes production code changes and use green tests to support the refactoring process without altering the software's behavior.

Writing real tests before implementation prevents regressions by validating the red failure first, ensuring only minimal code is added to pass, and maintaining green tests during refactoring to reduce unexpected behavioral changes.

The best way to maintain testing discipline is to follow a strict red-green-refactor cycle, which provides clear naming, coverage guidance, and refactoring rules to ensure every feature is implemented with confidence.