test-driven-development

Test-driven development prevents regression bugs by enforcing a strict workflow where you write failing tests before production code, ensuring every feature is verified and existing functionality remains intact during refactoring.

To start the Red-Green-Refactor cycle, write a failing test for the desired behavior, implement the minimum production code to make it pass, and then refactor the code while keeping the test green.

Yes, you can use pytest for terminal-based execution to validate code behavior against defined requirements, verifying that each piece of functionality passes before moving to the next.

The best way to handle complex feature development is to break the task into small, testable behaviors, writing a failing test first and iterating until each specific behavior passes.

Yes, test-driven development applies to bug fixing and refactoring tasks by requiring a failing test that captures the bug or validates the refactor before any production code changes are made.

Writing failing tests before production code eliminates the uncertainty of untested code and ensures every line of implementation is justified by a specific, verified requirement.