tdd

Guide red-green-refactor cycles by writing failing tests before implementation.

Updated Mar 28, 2026
One-click install
npx skills add https://github.com/zaeem-rafiq/tatheer-swift-sdk --skill tdd-zaeem-rafiq
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: tdd
Source: https://github.com/zaeem-rafiq/tatheer-swift-sdk/tree/main/.claude/skills/dev-workflow/tdd
Command: npx skills add https://github.com/zaeem-rafiq/tatheer-swift-sdk --skill tdd-zaeem-rafiq

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

TDD helps teams build features with a disciplined, test-first approach that reduces defects and clarifies design.

Core Features & Use Cases

  • Red–Green–Refactor cycle drives incremental implementation and early failure detection.
  • Behavior-based tests guide API design and improve maintainability across languages/frameworks.
  • Use cases include creating new features, safely refactoring legacy code, and validating interfaces before integration.

Quick Start

Start by writing one failing test, then implement the minimal code to pass, and refactor.

Frequently Asked Questions about tdd

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is test-driven development and how does it improve software quality?

Test-driven development is a test-first approach that drives software quality by steering design through tests before implementation, ensuring robust interfaces and early defect detection across languages and frameworks.

How do I apply the red-green-refactor cycle when building new features?

To apply the red-green-refactor cycle, write one failing test, implement the minimal code required to pass that test, then refactor while keeping all tests green to ensure incremental progress and early failure detection.

Can I use test-driven development for refactoring legacy code and debugging?

Yes, test-driven development supports safely refactoring legacy code and debugging tasks by validating interfaces before integration, guiding behavior-based tests that improve maintainability across any language or framework.

What's the best way to write tests that guide clean code and API design?

The best way to guide clean code and API design is through behavior-based tests, which clarify interfaces and improve maintainability by enforcing strict red-green-refactor discipline during implementation.

Does test-driven development work across different programming languages and frameworks?

Test-driven development works across all languages and frameworks without specific dependencies, applying red-green-refactor cycles universally to guide new features, refactors, and debugging tasks with minimal code.

When should I not use a strict test-first approach for software testing?

You should avoid strict test-driven development when rapid prototyping without defined interfaces, as it enforces writing one failing test per cycle and implementing minimal code, which requires clear behavior targets.