test-driven-development

Test-driven development is a practice where you write failing tests before implementation. The red-green-refactor cycle drives design by writing a failing test, implementing minimal code to pass, and then refactoring for maintainability.

To write unit tests before implementation, start by writing a failing test for the feature you plan to implement. Then, implement the minimal code required to pass that test to ensure correctness and prevent regressions.

Yes, test-first development is applicable to bug fixes and refactors. By writing tests before coding, you improve reliability and maintainability, reducing debugging time and ensuring your changes do not introduce regressions.

Enforcing test-first discipline is the best way to prevent regressions and guide design. It promotes code quality by driving feature work through explicit test-driven rules and code hygiene to increase confidence during development.

Writing tests before code improves maintainability by guiding design through the red-green-refactor workflow. This approach prevents regressions, increases confidence during feature work, and significantly reduces debugging time.

No specific testing frameworks are required. The focus is on enforcing a test-first discipline through the red-green-refactor cycle to drive design, ensure code correctness, and maintain code hygiene across your project.