tdd-workflow

Test-driven development using the red-green-refactor cycle involves writing a failing test first to specify behavior, implementing minimal production code to pass it, and then improving the structure incrementally while keeping tests green.

The best way to structure tests for TDD is using the AAA pattern, which organizes tests into Arrange, Act, and Assert sections for clarity, ensuring you keep tests small with one behavior per test.

You should use test-driven development for software development when working on new features, bug fixes, or refactors, as it ensures tests define expected behavior before implementation and prevents regression.

The TDD workflow enforces minimal production code during the green phase by prompting developers to implement only what is necessary to pass the failing test, ensuring robust and maintainable software design.

To perform refactoring without introducing new test failures, you improve the code structure during the refactor phase while strictly preserving the green tests, making small incremental refactors to maintain robustness.