Does this skill provide guidance on test coverage?

Yes, it encourages strategic coverage rather than 100% metrics, focusing high coverage on entity validation, business rules, and critical user journeys.

How does this skill handle layer boundaries?

It provides specific patterns for testing at the interface between the functional core (pure logic) and the effectful edge (I/O), ensuring tests focus on behavior rather than internal implementation.

What is Stub-Driven TDD?

Stub-Driven TDD is a workflow where you first create minimal interface/function signatures (stubs), write tests against those stubs, and then implement the real logic to make tests pass.

What should I avoid testing according to this skill?

The skill advises against testing private methods, framework-specific behavior (like Express or DB drivers), and trivial code like simple getters/setters without logic.

Is this skill specific to a certain programming language?

While the examples are provided in TypeScript, the principles of stubbing, TDD workflows, and architectural boundaries are applicable to most modern development environments.

Atelier Testing & TDD

Name: Atelier Testing & TDD
Author: martinffx

bymartinffx

•

安全与测试

Implements a robust stub-driven TDD workflow and layer boundary testing for functional core and effectful edge architectures.

This skill optimizes Claude's ability to perform Test-Driven Development (TDD) by emphasizing a 'stub-first' approach that defines interfaces before logic. It provides a structured methodology for testing at component boundaries, distinguishing between the functional core (pure business logic) and the effectful edge (I/O, databases, and APIs). By using these patterns, developers can ensure high-quality software architecture, reduce brittle tests, and maintain a clear separation of concerns across entities, services, and integration layers.

主要功能

013 GitHub stars

02Layer boundary testing patterns for functional core and effectful edge

03Anti-pattern detection to prevent testing implementation details or framework code

04Domain-specific templates for Entity, Service, and Router tests

05Strategic test coverage guidelines focused on critical business logic

06Stub-driven TDD workflow (Stub → Test → Implement → Refactor)

使用场景

01Creating reliable integration tests for API endpoints and database repositories using stubbed services

02Implementing new features using a test-first approach to define clean interface signatures

03Writing high-speed unit tests for pure business logic and entity validation rules

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add martinffx/claude-code-atelier testing

For use in Claude.ai and ChatGPT

Download Skill