test-driven-development

Test-driven development prevents code regressions by enforcing the Red-Green-Refactor loop, which requires writing failing tests before implementation and validating strict test-code relationships to build robust software.

To start writing failing tests before implementation, use the test-driven development methodology to define your feature requirements as tests first, write minimal code to pass them, and then refactor for code quality.

Yes, test-driven development actively prevents common testing anti-patterns by identifying and discouraging pitfalls like testing mocks or writing code before tests, ensuring strict adherence to the Red-Green-Refactor cycle.

Test-driven development is suitable for a user authentication module because it enforces writing failing tests first, implementing minimal code to pass, and refactoring, which leads to more reliable and maintainable authentication logic.

You should not use test-driven development if you cannot adhere to the strict Red-Green-Refactor cycle, as the methodology actively prevents rationalizations and requires strict validation of test-code relationships to ensure code quality.