test-driven-development

Test-driven development enforces correct software behavior by writing tests before implementation. The Red-Green-Refactor workflow involves writing a failing test, implementing minimal code to pass, and refactoring for clarity.

Apply test-driven development to new features and bug fixes by initially writing a failing test that defines expected behavior, then implementing the minimal production code to pass, reducing guesswork and surfacing design gaps early.

Yes, test-driven development is applicable for refactoring across diverse codebases. Writing tests before modifying code ensures automated validation and prevents regressions during incremental design improvements.

Writing tests before implementation helps with early failure detection by defining expected behavior upfront. This reduces guesswork, surfaces design gaps early, and ensures automated validation to prevent regressions during feature work.

The best way to start practicing test-driven development is to write a failing test first, implement the minimal code required to make it pass, and then refactor the code for clarity to achieve safer incremental design.