test-driven-development

Guide teams through Red-Green-Refactor cycles for test-first development.

Updated Mar 31, 2026
One-click install
npx skills add https://github.com/hetsheth-droid/toolbox-template --skill test-driven-development-hetsheth-droid
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/hetsheth-droid/toolbox-template/tree/main/incubating/superpowers-skills/test-driven-development
Command: npx skills add https://github.com/hetsheth-droid/toolbox-template --skill test-driven-development-hetsheth-droid

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Writing tests before production code to guide design, prevent regressions, and ensure maintainable, well-specified behavior across features and fixes.

Core Features & Use Cases

  • Red-Green-Refactor workflow: write failing tests, implement minimal code to pass, then refactor safely.
  • Clear guidance for feature development, bug fixes, and refactors with a test-first mindset.
  • Real-world applicability across modern web and backend projects, ensuring verifiable behavior with minimal, verifiable tests.

Quick Start

Start by writing a failing test for the desired behavior, then implement the minimal code to make it pass.

Frequently Asked Questions about test-driven-development

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

FAQPage Schema
How do I start writing tests before code using the Red-Green-Refactor cycle?

To start test-driven development, write a failing unit test for the desired behavior, implement the minimal code required to make it pass, then consciously refactor the code while keeping the test green. This ensures behavior-driven validation and verifiable code quality.

What is test-driven development and when should I use it for feature development?

Test-driven development is a tests-first workflow used for feature development, bug fixes, and refactoring. You should use it to guide software design, prevent regressions, and ensure maintainable, well-specified behavior across modern web and backend projects.

Can I use test-first workflows for bug fixes and refactoring existing code?

Yes, test-first workflows apply directly to bug fixes and refactoring. You write explicit failing tests that reproduce the bug or verify the desired behavior, implement incremental code to pass them, and then refactor with safe guardrails to prevent regressions.

What is the best way to ensure code quality when implementing minimal code in TDD?

The best way to ensure code quality in test-driven development is to write minimal, verifiable implementations to pass failing tests, then consciously refactor the code with safe guardrails. This behavior-driven validation prevents regressions and ensures maintainable design.

Does test-driven development work with modern web and backend test frameworks?

Yes, test-driven development applies to modern web and backend projects using common test frameworks. It emphasizes real-world applicability by requiring explicit failing unit tests and incremental code to ensure verifiable behavior across your stack.

Why write failing tests first instead of writing production code and tests together?

Writing failing tests first guides your software design and ensures maintainable, well-specified behavior. This test-driven approach prevents regressions by requiring explicit failing tests and minimal implementations before conscious refactoring, yielding reliable code.