test-driven-development

The Red-Green-Refactor cycle enforces writing a failing test first, then creating minimal production code to pass it, and finally cleaning up the design. This strict test-driven development workflow ensures code remains tested and regression-free.

To prevent regressions during refactoring, enforce writing a failing test before modifying any production code. This behavior-driven testing approach catches breaking changes automatically by verifying that all existing and new functionality remains intact.

You need to write a failing test for a new feature before any production code is created. This test-driven development requirement proves the feature's necessity, prevents over-engineering, and eliminates technical debt caused by writing untested code.

Yes, test-driven development applies to both bug fixes and new feature implementation. It requires establishing a corresponding failing test first for any code change, ensuring high software quality and preventing regressions across all development tasks.

The best way to enforce strict TDD is to prohibit the creation of production code without prior test verification. Mandating the Red-Green-Refactor methodology ensures all team members write minimal, tested, and clean code for every task.

Writing code before tests causes technical debt because it skips verifying requirements upfront. Test-driven development eliminates this instability by ensuring every feature is backed by a failing test that proves its necessity before implementation begins.