test-driven-development

To implement test-driven development for new features, you write a failing test defining the desired behavior, write minimal code to pass the test, and then refactor while keeping the test green. This Red-Green-Refactor cycle ensures reliable and maintainable code.

Test-first development fixes bugs by writing a failing test that reproduces the specific bug, then modifying the code until the test passes. This approach prevents regression and ensures the bug is genuinely resolved before considering the task complete.

The Red-Green-Refactor cycle in TDD works by writing a failing test to define behavior, writing minimal code to pass the test, and refactoring the implementation to improve code quality while ensuring the test continues to pass.

Yes, you need unit testing knowledge to apply TDD principles. Understanding unit testing and test-first development principles is required to structure your tests effectively and ensure code quality and bug prevention.

You should not use test-driven development practices when exploring experimental prototypes where behavior is undefined, or when facing common anti-patterns that lead to writing tests for trivial code, as identified by the TDD methodology.

Yes, you can use TDD practices for refactoring existing code. By ensuring tests cover current behavior before making changes, you can safely refactor the implementation while the test suite verifies that functionality remains intact.