test-driven-development

You can enforce test-driven development by applying the Red-Green-Refactor cycle, which requires writing a failing test for the expected behavior before implementing any production code, ensuring high code quality and regression prevention.

The best way to prevent regressions during refactoring is to maintain a test suite that validates existing behavior, ensuring all new code is strictly driven by failing tests before implementation to verify production code continuously.

To write tests first using pytest, define the expected API behavior in a test file and execute the suite to confirm it fails, then implement the minimal code required to turn the failing test green.

Yes, you need terminal access to execute testing frameworks like pytest and validate your test suites, as the Red-Green-Refactor cycle requires running tests to confirm initial failures and subsequent implementation success.

Test-driven development requires behavior-driven design because defining failing tests first ensures the implementation is strictly driven by actual requirements rather than assumptions, naturally enforcing reliable and bug-prone-free code.

No, this skill requires access to terminal tools and testing frameworks like pytest to execute and validate test suites, as the core mechanism relies on running tests to verify the Red-Green-Refactor cycle.