What languages does this unit testing skill support?

The skill provides optimized testing patterns and code snippets for both TypeScript (using Vitest/Jest) and Python (using Pytest).

Does it support advanced Pytest features?

Yes, it includes 2026 best practices for fixture scoping (function, module, session) and indirect parametrization for efficient testing.

What is the AAA pattern provided by this skill?

AAA stands for Arrange-Act-Assert, a structural pattern that organizes tests into three clear sections to improve readability and maintainability.

What are the recommended coverage targets?

The skill suggests 90%+ coverage for business logic, 100% for critical paths/new features, and 80%+ for utility functions.

How does it handle test isolation?

It provides boilerplate for fresh service instances and repository mocks to ensure tests are deterministic and do not share state.

Unit Testing Patterns

Name: Unit Testing Patterns
Author: yonatangross

byyonatangross

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Seguridad y Pruebas

Implements high-performance, isolated unit testing patterns using the AAA methodology across TypeScript and Python environments.

This skill provides a standardized framework for writing deterministic, fast-running unit tests for business logic within Claude Code. It includes production-ready implementations for Vitest and Pytest, covering advanced topics like fixture scoping, indirect parametrization, and strict test isolation. By following these patterns, developers can ensure high code coverage and reliability while maintaining a clean separation between implementation and behavior in AI-assisted development workflows.

Características Principales

01Cross-language support for TypeScript (Vitest) and Python (Pytest)

02Predefined coverage targets for business logic and critical paths

03Strict test isolation and dependency mocking templates

04Advanced fixture scoping and indirect parametrization patterns

0569 GitHub stars

06AAA (Arrange-Act-Assert) pattern standardization

Casos de Uso

01Implementing combinatorial testing for complex edge-case validation

02Setting up mock-heavy service layer tests with clean isolation

03Writing fast, deterministic tests for isolated business logic

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add yonatangross/orchestkit unit-testing

For use in Claude.ai and ChatGPT

Download Skill