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acp-test-first

Write a failing test before implementing code changes.

29|12|Updated May 4, 2026
Search Tags:#code quality#refactoring#feature development#test-driven development#bug fixes
One-click install
npx skills add https://github.com/bravekingzhang/agent-coding-playbook --skill acp-test-first
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: acp-test-first
Source: https://github.com/bravekingzhang/agent-coding-playbook/tree/main/skills/acp-test-first
Command: npx skills add https://github.com/bravekingzhang/agent-coding-playbook --skill acp-test-first

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps in implementing code changes in a structured, test-driven manner, ensuring that changes adhere to expected behavior before they are made to the codebase.

Core Features & Use Cases

  • Test-Driven Development: Ensures that code changes are validated by tests before implementation.
  • Bug Fixes: Assists in writing failing tests for bugs before writing the code to fix them.
  • Behavior Changes: Guides the process for adding new features while maintaining existing functionality.
  • Refactoring: Ensures refactoring does not break existing functionality.

Quick Start

Use this skill to create a failing test for a new feature before writing the code for the feature.

Frequently Asked Questions about acp-test-first

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

FAQPage Schema
How do I implement test-driven development for bug fixes and new features?▼

Test-driven development for bug fixes and features is implemented by first writing a failing test for the desired behavior, then writing the minimum code required to pass that test.

Do I need an existing test framework to use test-driven development for code changes?▼

Yes, an existing test framework is required. This approach applies to projects with a test framework to validate behavior changes and ensure code correctness before implementation.

What is the best way to ensure refactoring does not break existing functionality?▼

To ensure refactoring does not break existing functionality, implement changes in a test-driven way by validating code changes against expected behavior before applying them to the codebase.

How does writing a failing test before coding improve code quality?▼

Writing a failing test before coding improves code quality by structuring development to ensure changes adhere to expected behavior, validating correctness before modifying the codebase.

Can I use this test-driven approach for behavior changes in existing projects?▼

Yes, you can use this test-driven approach for behavior changes in existing projects. It guides adding new features or fixing bugs while maintaining existing functionality through structured validation.

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