test-driven-development

Test-driven development is a test-first workflow where you write a failing test, implement minimal production code to pass it, and then refactor. This red-green-refactor cycle reduces regression risk and guides disciplined software engineering.

To enforce test-first discipline, ensure a failing test is present before writing any production code for bug fixes or features. This approach guarantees safety nets exist and drives API design by requiring tests to fail first.

Yes, test-driven development is cross-language applicable. It works across any programming languages and tools that support automated tests, allowing you to maintain quality assurance regardless of your specific software engineering stack.

The best way to start is to write a failing test for the new feature, implement the minimal production logic to make it pass, and then refactor the code for clarity and maintainability while keeping all tests green.

Writing a failing test before implementing production code ensures coverage by design. It validates that your safety nets are effective, guides API design, and reduces regression risk throughout feature development and refactoring.