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test-first

Enforce Test-First Development by requiring a failing test before implementation code.

78|20|Updated Mar 9, 2026
Search Tags:#code quality#testing#tdd#refactoring#software development#test-first
One-click install
npx skills add https://github.com/NoobyGains/godmode --skill test-first-noobygains
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-first
Source: https://github.com/NoobyGains/godmode/tree/main/skills/test-first
Command: npx skills add https://github.com/NoobyGains/godmode --skill test-first-noobygains

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill enforces the Test-First Development (TDD) methodology, ensuring that all new code is written with a corresponding failing test, leading to more robust and reliable software.

Core Features & Use Cases

  • Mandatory Test-First Implementation: Guarantees that no production code is written without a preceding failing test.
  • Red-Green-Refactor Cycle Enforcement: Guides the developer through the TDD loop, ensuring tests are written, made to pass with minimal code, and then refactored.
  • Use Case: When implementing a new user authentication feature, you would first write a test for a successful login, watch it fail, write the minimal code to pass, and then refactor.

Quick Start

Use the test-first skill to implement the new feature by writing a failing test before any implementation code.

Frequently Asked Questions about test-first

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

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

Test-first development is enforced by requiring a failing test before any implementation code is written. This guarantees no production code is created for new features or bug fixes without a preceding failing test.

What is the Red-Green-Refactor cycle in TDD?▼

The Red-Green-Refactor cycle is a TDD mechanism where you write a failing test, implement minimal code to make it pass, and then refactor the code. This ensures robust software development through iterative test-first implementation.

How do I start writing code using a test-first methodology?▼

To start test-first coding, write a test for the desired behavior, watch it fail, and then write the minimal production code required to pass. This ensures quality by validating behavior before full implementation.

Can I use test-first development for behavior modifications?▼

Yes, test-first development applies to all behavior modifications. You must write a failing test that defines the new behavior before changing or adding any production code to ensure robust modifications.

When should I not use test-first development?▼

You should not use test-first development when writing production code that cannot be validated by a failing test. The methodology strictly enforces the principle that no production code is written without a preceding failing test.

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