test-driven-development

To enforce test-driven development, you must follow a strict Red-Green-Refactor cycle. This requires writing a failing test first to verify the requirement, implementing minimal production code to pass it, and then refactoring safely.

The Red-Green-Refactor cycle is a test-driven development process where you write a failing test, implement minimal code to make it pass, and then refactor the code. This ensures all production code is verified by failing tests before implementation.

You can prevent untested edge cases and technical debt by applying quality guardrails that prohibit production code implementation until a corresponding failing test case is established and verified, ensuring safe refactoring and high code quality.

Yes, a test-first approach applies to both bug fixes and feature development. By establishing a failing test case that proves the requirement is understood, you verify the test is valid before any implementation begins, preventing regressions.

You should avoid a test-first approach when implementation must precede verification, as this method strictly prohibits writing production code until a failing test case is established and verified to ensure high code quality.

The best way to ensure safe refactoring is to enforce a rigorous Red-Green-Refactor development cycle. This verifies all production code against failing tests before implementation, maintaining high code quality and preventing regressions.