test-driven-development

Test-driven development is a coding workflow where you write a failing test first, implement the minimal code to pass it, then refactor for clarity. This red-green-refactor cycle establishes a contract for expected behavior and catches regressions early.

Describe the small feature, write a failing unit test that codifies expected behavior, then implement the minimal production code required to pass the test. This behavior-first approach ensures changes stay aligned with requirements before you write the implementation.

Yes, test-driven development applies to bug fixes and refactors across projects. Write a failing test that reproduces the bug or verifies the refactor, implement minimal code to pass, and guard against future regressions using the updated test suite.

Adopt test-driven development to reduce regressions by establishing a behavior contract upfront. Writing tests before code provides immediate feedback through incremental development, ensuring the test suite validates requirements before production code is written.

Writing failing tests first establishes a contract for expected behavior, reducing ambiguity in your code. It enforces a red-green-refactor workflow with minimal, focused code that passes tests, ensuring the test suite validates requirements before writing production code.