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test-driven-development

Enforce the Red-Green-Refactor cycle for test-first software development.

115|13|Updated Mar 24, 2026
Search Tags:#code quality#tdd#refactoring#bug prevention#test-driven development#software testing#production code
One-click install
npx skills add https://github.com/Houseofmvps/ultraship --skill test-driven-development-houseofmvps
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/Houseofmvps/ultraship/tree/main/skills/test-driven-development
Command: npx skills add https://github.com/Houseofmvps/ultraship --skill test-driven-development-houseofmvps

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill eliminates the risk of shipping untested, buggy production code that causes regressions, missed edge cases, and hours of costly post-deployment debugging by enforcing a strict test-first workflow.

Core Features & Use Cases

  • Strict TDD Cycle Enforcement: Mandates the Red-Green-Refactor workflow with required verification steps to ensure tests actually validate behavior, not implementation details.
  • Anti-Pattern Guidance: Includes dedicated guidance for avoiding common testing mistakes like testing mock behavior, adding test-only code to production, and incomplete mocking.
  • Use Case: When building a new payment processing feature, this Skill ensures you write a failing test for invalid card number handling first, eliminating the risk of shipping broken payment logic.

Quick Start

Ask the AI to implement the new user profile editing feature using test-driven development, requiring it to write a failing test for unauthorized edit attempts before writing any implementation code.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
How does test-driven development prevent shipping buggy production code?▼

Test-driven development prevents buggy production code by enforcing a strict Red-Green-Refactor cycle, mandating test failure verification before implementation to ensure tests validate real user-facing behavior.

How do I enforce the Red-Green-Refactor cycle when implementing new features?▼

To enforce the Red-Green-Refactor cycle, mandate writing a failing test for specific user behavior before any implementation code, verifying the test fails initially before moving to the green phase.

What are common test-driven development anti-patterns I should avoid?▼

Common test-driven development anti-patterns to avoid include testing mock behavior instead of real functionality, adding test-only code to production systems, and utilizing incomplete mocking strategies.

Can I use test-driven development for refactoring and bug fixes?▼

Yes, test-driven development applies to refactoring and bug fixes for production-grade software, requiring strict adherence to test-first workflows to eliminate regressions and post-deployment debugging.

Why does test-first coding require verifying test failure before implementation?▼

Test-first coding requires verifying test failure before implementation to guarantee the test actually validates the intended user-facing behavior and is not passing due to a false positive.

When do I need test-driven development for my software engineering workflow?▼

You need test-driven development when building production-grade software systems implementing features, bug fixes, or refactoring, ensuring you eliminate the risk of shipping untested code and regressions.

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