test-driven-development

Start test-driven development by writing a failing test case that defines the expected behavior for your new feature. You then implement the minimal code required to pass that test before moving into the refactoring phase.

The Red-Green-Refactor cycle in unit testing is a mandatory workflow where you write a failing test, implement minimal code to make it pass, and then systematically refactor the implementation to ensure high code reliability.

TDD prevents technical debt by enforcing a failing-test-first development methodology, ensuring every feature is verified by a test before implementation. This guarantees clear behavioral documentation and prevents regressions in software engineering tasks.

You should use a test-first approach for bug fixing and refactoring whenever a development task requires high code reliability and regression prevention. It ensures the bug is captured by a failing test before the minimal fix is implemented.

Common unit testing anti-patterns include mocking behavior instead of testing real logic. Identifying and avoiding these testing pitfalls ensures your tests accurately validate requirements rather than masking implementation flaws during refactoring.

Yes, you can use TDD methodology for implementing user authentication features by defining the expected behavior in a test file first. This ensures your authentication implementation is driven by requirements rather than assumptions.