test-driven-development

Test-driven development is a disciplined approach where you write a failing unit test for a feature, implement minimal production code to pass it, and then refactor. This cycle ensures behavior is verified from the start.

The red-green-refactor cycle in test-driven development involves writing a failing test, producing the minimal code to make it pass, and then cleaning up the design. This workflow catches regressions early and drives reliable code quality.

Use test-driven development during new features, bug fixes, and refactors to maintain software quality and confidence. It encourages writing small, testable units and driving design with tests to prevent defects and catch regressions early.

Test-driven development does not require specific external dependencies or frameworks. It is an agile workflow discipline that can be applied to any software engineering task requiring robust unit tests and reliable code quality.

The best way to ensure reliable code quality in agile development is adopting test-driven development. By enforcing a failing-test-first workflow and writing minimal production code, you prevent defects and verify behavior from the start.