What problem does it solve?
Test-driven development reduces defect rates by ensuring that software behavior is defined by tests before implementation, aligning teams around verifiable outcomes and protecting against brittle refactors.
Core Features & Use Cases
- Structured workflow: Planning, tracer bullets, vertical slicing, and red-green-refactor cycles guide feature delivery and bug fixes with measurable progress.
- Guardrails and best practices: Emphasizes testing through public interfaces, avoids testing internal details, and promotes end-to-end integration-style checks.
- Real-world use case: When starting a new feature, write a single end-to-end test for the desired behavior, then implement the minimal code to pass it, iterating until all scenarios are covered.
Quick Start
Begin a tracer bullet by writing one end-to-end test for a desired behavior, then implement the minimal code to pass it.