test-driven-development

The red-green-refactor loop in test-driven development involves writing a failing test, implementing minimal code to pass it, then refactoring for clarity. This enforces test-first discipline to catch regressions early and improve software reliability.

To start writing tests before code, write a failing test for a small feature, implement the minimal production code required to pass the test, and then refactor for maintainability. This incremental approach ensures reliable software development.

Use test-driven development for bug fixes and refactoring to catch regressions early and define expected behavior. Applying the test-first approach ensures your changes do not break existing functionality and provides a safety net for future modifications.

Yes, test-driven development works for configuration changes by requiring a failing test before implementing the change. This enforces test-first discipline across feature development, bug fixes, refactors, and configuration updates to catch edge cases early.

Writing a failing test before production code ensures you define expected behavior upfront and catch regressions early. This test-first discipline improves software design, creates living documentation, and guides incremental implementation.

Test-driven development requires strict discipline to write tests before code and may slow initial development. However, it catches edge cases early, serves as living documentation, and provides a safety net that improves long-term maintainability and reliability.