test-driven-development

The red-green-refactor cycle drives test-driven development by first writing a failing test, then implementing the minimal code to pass it, and finally refactoring systematically with guardrails to ensure verifiable behavior and protect against regressions.

Start by writing a minimal failing unit test that explicitly defines the expected behavior, then implement the simplest code to pass the test and iterate with small, testable increments and safe refactoring.

Use test-driven development when adding or modifying core logic that requires explicit behavior specification and regression protection, ensuring verifiable behavior through small, testable increments and safe refactoring.

The best way to prevent regressions is enforcing a test-driven development cycle with guardrails, writing tests before implementation to verify desired behavior and systematically refactoring with safe, testable increments.

Test-driven development requires no specific dependencies or testing frameworks, focusing instead on the disciplined process of writing failing tests first, implementing minimal code, and refactoring systematically.