test-driven-development

To implement test-driven development for a new software feature, write a failing test first, then write the minimal code required to pass it, and finally refactor the implementation to improve code quality while ensuring the test stays green.

The Red-Green-Refactor cycle in TDD is a strict workflow where you write a failing test, implement the minimal code to make it pass, and then refactor the code to improve design and maintainability without breaking existing functionality.

Yes, you can use TDD for bug fixes and refactoring existing code by writing a failing test that reproduces the bug or verifies current behavior before making changes, ensuring regressions are prevented throughout the process.

Writing tests before implementation improves code quality by enforcing a testable and maintainable software design, ensuring the code strictly meets requirements and preventing future regressions from untracked changes.

The best way to prevent regressions during agile software development is to enforce a rigorous test-driven development methodology, ensuring all new code and bug fixes are covered by tests written before implementation.

You might avoid a strict TDD workflow for exploratory prototyping or throwaway scripts where immediate feedback is prioritized over long-term code quality, as the overhead of writing failing tests first can slow down initial experimentation.