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test-driven-development

Guide developers through writing failing tests, minimal implementation, and refactoring cycles.

Updated Aug 27, 2026
Search Tags:#code quality#testing#tdd#best practices#software development
One-click install
npx skills add https://github.com/ndriyo/primepm --skill test-driven-development-ndriyo
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/ndriyo/primepm/tree/main/.agents/skills/test-driven-development
Command: npx skills add https://github.com/ndriyo/primepm --skill test-driven-development-ndriyo

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

It addresses the challenge of writing reliable, maintainable software by promoting thorough testing before implementation, reducing bugs and technical debt.

Core Features & Use Cases

  • Guided TDD cycle: Provides step-by-step instructions for writing failing tests, verifying failures, minimal implementation, and refactoring.
  • Best practices enforcement: Ensures tests are clear, minimal, and effectively demonstrate desired behavior.
  • Use Case: Developers can adopt TDD to systematically develop new features, catch regressions early, and improve code quality with confidence.

Quick Start

Write a test that verifies a function retries a failed operation three times, then observe it fail, implement the minimal function, and confirm it passes all tests.

Frequently Asked Questions about test-driven-development

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

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

Test-driven development is a methodology where you write failing tests before implementation, ensuring reliable code by catching issues early and reducing technical debt through structured testing cycles.

How do I start implementing a TDD cycle for a new software feature?▼

Start the TDD cycle by writing a test that verifies desired behavior, observe it fail, implement the minimal code required to pass, and then refactor safely while confirming all tests pass.

When should I use TDD practices in software development?▼

Use TDD practices when systematically developing new features, catching regressions early, or improving code maintainability with confidence during safe refactoring of existing implementations.

Does test-driven development require specific testing frameworks or dependencies?▼

Test-driven development does not require specific frameworks or dependencies, focusing instead on enforcing clear, minimal tests that effectively demonstrate desired behavior across any software development environment.

What is the best way to write a test that verifies a retry operation in TDD?▼

The best way to verify a retry operation in TDD is writing a test expecting three retries on failure, observing the failure, implementing the minimal retry function, and confirming all tests pass.

How does TDD facilitate safe code refactoring without introducing bugs?▼

TDD facilitates safe refactoring by maintaining a suite of clear, minimal tests that verify behavior, allowing developers to modify code with confidence that regressions will be caught immediately.

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