test-driven-development

The Red-Green-Refactor cycle in test-driven development involves writing a failing unit test, implementing production code to pass the test, and then refactoring to improve software quality while ensuring behavior remains validated.

To prevent unit testing anti-patterns when mocking behavior, follow a disciplined test-driven development workflow that focuses on testing real outcomes rather than mocking behavior, systematically avoiding common testing mistakes that create fragile code.

You write unit tests before production code by defining the expected behavior through a failing test case first, ensuring the solution is verified and regression-proof before implementing the actual feature logic.

You need test-driven development for fixing complex bugs when you want to define the expected behavior through a test first, ensuring the solution is verified, regression-proof, and prevents hidden bugs and technical debt accumulation.

Yes, you can use test-driven development to improve software quality during refactoring by enforcing a rigorous workflow backed by unit tests, ensuring high code quality and reliability while maintaining confidence throughout the codebase.

Test-driven development prevents technical debt in software engineering by enforcing a systematic creation of unit tests before production code, ensuring every line is backed by a failing test, avoiding hidden bugs, and validating software behavior to prevent regressions.