test-driven-development

Test-driven development starts by writing a failing test before any implementation code. You then write the minimal code required to pass that test, ensuring the feature is well-tested and robust from the beginning.

The Red-Green-Refactor cycle is the core TDD mechanism. Red means writing a failing test, Green means writing minimal code to pass it, and Refactor means improving the code structure without changing its behavior to prevent regressions.

Code regressions in TDD often happen when skipping the Refactor step or falling into testing anti-patterns. Identifying and resolving these rationalizations ensures code quality and maintains the integrity of your software.

Yes, TDD principles are highly effective for refactoring existing software. By writing failing tests before modifying the implementation, you ensure code quality, improve maintainability, and prevent regressions during the refactoring process.

Apply test-driven development in agile software development whenever starting a new feature. Writing failing tests first ensures code quality, prevents regressions, and improves overall software design and maintainability.

The best way to prevent testing anti-patterns is to strictly enforce the TDD methodology. This involves following the Red-Green-Refactor cycle and addressing common rationalizations that bypass writing failing tests before implementation.