test-driven-development

Test-driven development improves software quality by enforcing a test-first workflow that prevents regressions and guides intentional design. Writing a failing test before production code ensures minimal implementation and promotes iterative, verifiable progress across features and refactoring tasks.

To apply the red-green-refactor cycle, first write a failing test that defines the desired behavior. Next, implement minimal production code to pass the test. Finally, refactor the code while keeping the tests green, ensuring continuous, verifiable progress.

Yes, a test-first workflow applies to bug fixes and refactoring tasks across software projects. For bug fixes, write a failing test that reproduces the error first. For refactoring, rely on existing tests to verify that structural changes do not alter behavior.

The best way to prevent untested changes is to enforce a test-first workflow that guards production code. By requiring a failing test before implementation, you ensure every feature addition or refactor is incrementally verified and production-safe.

Yes, you need to write a failing test before implementing new features. This disciplined testing mindset satisfies requirements by defining the expected behavior upfront, which then guides the minimal production code needed to pass the test.

Writing minimal code to pass a failing test ensures you only implement what is required by the test, preventing over-engineering. This disciplined approach promotes iterative design and keeps the production code focused, maintainable, and production-safe.