test-driven-development

The red-green-refactor cycle in test-driven development involves writing a failing test first, implementing minimal code to pass that test, then refactoring while keeping tests green. This enforces test design as the driving force behind feature implementation.

To start test-driven development for a new feature, write a failing test that encodes the intended behavior, then implement only the minimal code necessary to make that test pass, ensuring development is guided by tests.

Yes, test-driven development applies to bug fixes, refactoring efforts, and behavior changes across languages and frameworks. It validates progress through automated tests and prevents unverified behavior and regressions.

Writing a failing test before implementation acts as a preemptive quality gate. It encourages early validation of requirements and prevents scope creep by maintaining focused, testable goals throughout the development process.

Test-driven development is applicable across languages and frameworks. It enforces the red-green-refactor cycle and validates progress through automated tests, making it language-agnostic for software engineering projects.

Test-driven development requires strict adherence to the red-green-refactor cycle, which may slow initial implementation. It focuses on testable behavior, so UI design or exploratory programming might require supplementary approaches.