test-driven-development

The Red-Green-Refactor cycle in test-driven development involves writing a failing test first, implementing minimal code to pass it, and then refactoring the code while tests remain green. It ensures reliable code and prevents regressions.

To start writing tests before implementation, write a failing test defining the desired feature behavior, then write the minimal code required to pass that test, and finally refactor the implementation to improve code quality without breaking functionality.

Use test-driven development to prevent technical debt when starting new features or modifying existing code. Enforcing this rigorous practice ensures requirements are met and code is well-tested before implementation begins, preventing future bugs.

Test-driven development prevents regressions in agile workflows by enforcing a strict cycle of writing failing tests before implementation. This ensures new code does not break existing functionality and maintains high code quality standards.

The best way to refactor code after writing failing tests is to wait until all tests are green, then improve the code structure while adhering to TDD principles. Refactor only after tests pass to ensure functionality remains intact.