test-driven-development

Test-driven development prevents regressions by mandating the creation of failing tests before writing implementation code. This strict sequence catches bugs early and improves overall code reliability during software development.

To apply the Red-Green-Refactor cycle, you first write a failing test for the missing feature, then write minimal implementation code to make it pass, and finally refactor the code for quality. This enforces strict TDD principles.

The best way to ensure code quality during agile debugging is enforcing the test-driven development cycle. You write tests before fixing bugs, which prevents future regressions and verifies the fix effectively.

Yes, you can use TDD principles for refactoring existing code. The process mandates writing tests to verify current behavior before refactoring, ensuring strict verification steps prevent regressions and maintain code quality.

You need to write tests before implementation code whenever developing new features, fixing bugs, or refactoring. This test-driven approach is required to prevent bugs and ensure all new code passes pre-existing, failing tests.