Does it support UI testing with XCUIApplication?

The skill focuses on the Swift Testing framework but follows the contract of keeping UI automation in XCTest where native Swift Testing support is not yet optimal.

How does it handle parallel test execution?

It defaults to parallel-safe guidance, proposing fixes for shared state and dependency isolation before suggesting the use of .serialized traits.

Can this skill help me migrate from XCTest?

Yes, it provides an incremental migration workflow, helping you convert assertions first, then reorganize suites, and finally introduce modern features like parameterization.

What is the advantage of using traits and tags here?

The skill recommends traits for behavior and metadata (like bug tracking or time limits) over old-fashioned naming conventions, making your test reports much cleaner.

Swift Testing Expert

Name: Swift Testing Expert
Author: AvdLee

byAvdLee

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271

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Security & Testing

Guides developers through writing, migrating, and optimizing modern Swift Testing suites with best-practice macros and parallel-safe patterns.

Swift Testing Expert is a specialized capability for Claude designed to modernize and refine Apple-platform and Swift server-side testing workflows. It provides deep domain expertise in the modern Swift Testing framework, helping developers leverage macros like #expect and #require, implement sophisticated parameterized tests, and organize suites using traits and tags. Whether you are performing an incremental migration from XCTest, debugging flaky tests through better isolation, or architecting parallel-safe test plans, this skill ensures your test code is readable, maintainable, and aligned with the latest Swift standards.

Key Features

01Expert guidance on Swift Testing macros including #expect and #require

02Optimization for parallel execution and robust test isolation

03271 GitHub stars

04Advanced test organization using traits, tags, and OS-gated behavior

05Incremental migration strategies from legacy XCTest suites

06Implementation of parameterized tests to eliminate boilerplate

Use Cases

01Designing robust, parallel-safe unit tests for complex app logic

02Modernizing legacy XCTest suites into native Swift Testing code

03Debugging and resolving flaky tests through dependency isolation

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add avdlee/swift-testing-agent-skill swift-testing-expert

For use in Claude.ai and ChatGPT

Download Skill