tdd

Test-driven development is a test-first design approach that requires writing failing tests before implementation to reduce defects. It guides teams through Red/Green/Verify cycles, keeping changes small and maintainable while improving code quality.

Start the Red Green Refactor cycle by writing a failing test for the desired behavior, implement just enough minimal code to pass that test, then verify with quality checks and refactor incrementally while maintaining strict coverage discipline.

Yes, test-first development applies across development phases including refactors and incremental enhancements. It enforces early testing and coverage discipline, enabling faster and safer evolution of existing software.

Test-driven development requires tests before implementation to guide software design and enforce minimalism. This discipline prevents adding unneeded code or helpers until necessary, keeping changes maintainable and reducing defects.

Strict test-first development requires high discipline to avoid premature abstraction and maintain minimal changes. It demands continuous verification with coverage checks throughout iterative refinement, which may slow initial feature delivery for rapid prototyping.

Test-driven development ensures quality assurance by embedding verification directly into the development workflow. By enforcing Red/Green/Verify cycles and strict coverage practices, it distinguishes itself from traditional post-development testing approaches.