test-driven-development

Test-driven development prevents misaligned implementations by enforcing a failing test before coding, ensuring the production code strictly validates the intended behavior of features and bug fixes.

The Red-Green-Refactor cycle in TDD is a workflow that mandates a failing RED verification first, implements minimal code to reach GREEN, and then drives safe refactoring to improve code quality.

To start a new feature using test-first development, write a failing test that defines the desired behavior, then implement the smallest amount of code required to make that test pass.

Yes, you can use TDD for refactoring existing codebases safely by verifying outcomes against tests to support safe behavior changes without breaking current functionality.

Test-driven development works for bug fixes and behavior changes by applying the test-first workflow to validate intent, ensuring the fix or change is captured by a failing test before implementation.

You should write a failing test before production code to validate your intent and ensure the minimal implementation strictly aligns with the expected feature behavior and quality assurance standards.