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tdd

Guide test-first development cycles with writing tests, implementation, and safe refactoring.

Updated Jun 12, 2026
Search Tags:#code quality#TDD#refactoring#test-driven development#software testing
One-click install
npx skills add https://github.com/flowel/AiSkills --skill tdd-flowel
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: tdd
Source: https://github.com/flowel/AiSkills/tree/main/skills/codex/tdd
Command: npx skills add https://github.com/flowel/AiSkills --skill tdd-flowel

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps streamline the process of test-driven development, ensuring that code is well-tested and behavior-focused.

Core Features & Use Cases

  • Test-First Approach: Encourages writing tests before writing the actual code.
  • Behavior-Driven Development: Ensures tests describe the behavior of the system, not the implementation.
  • Refactoring Safety: Assists in identifying refactor candidates after a TDD cycle.
  • Use Case: Ideal for developers who want to implement features or fix bugs in a way that emphasizes testing and code quality.

Quick Start

Use the tdd skill to create a test for a new feature and watch it fail. Then, write the minimum code required to pass the test.

Frequently Asked Questions about tdd

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

FAQPage Schema
How do I start test-driven development for a new feature?▼

No, behavior-driven development focuses tests on describing system behavior rather than implementation. This approach ensures tests validate expected outcomes instead of internal code structure.

When do I need to refactor code during the TDD cycle?▼

Refactor code after passing a test-driven development cycle to identify and execute refactoring candidates safely. This ensures code quality improvements happen without breaking existing behavior verification.

What do I need to know before applying test-first principles?▼

You need a solid understanding of test-first principles and code refactoring before starting. This Skill targets developers who already focus on behavior verification and software testing.

Does test-driven development work for fixing existing bugs?▼

Yes, test-driven development works for fixing bugs by emphasizing testing and code quality. Write a test that reproduces the bug, implement the fix to pass it, and refactor safely.

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