test-driven-development

Test-driven development requires writing a failing test for a feature first, then implementing the minimal production code to pass it, and iterating safely through cleanup. This enforces Red-Green-Refactor discipline to drive design through failure and reduce bug risk.

The Red-Green-Refactor workflow drives software design by first writing a failing test, implementing minimal code to make it pass, and then cleaning up. This incremental implementation encourages clean, maintainable code with deterministic guardrails to prevent regressions.

Yes, test-driven development applies to bug fixes, refactors, and behavior changes across common development stacks. It guides teams through failure-first design to ensure tests precede production code, promoting clearer requirements and preventing future regressions.

Writing tests before implementation improves software quality by forcing failure-first design, which clarifies requirements and reduces bug risk. This test-first workflow ensures production code is guided by deterministic guardrails, yielding clean and maintainable code.

The best way to start a test-first workflow is to write a failing test first, then implement the minimal production code required to pass it. This incremental approach enforces Red-Green-Refactor discipline and ensures safe iteration.