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guide-swift-testing

Swift Testing patterns — structs over classes, async confirmations, parameterized tests, exit tests, attachments, common agent mistakes. Use when writing, reviewing, or migrating Swift Testing code.

skills/guide-swift-testing/SKILL.md

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> **Guide Skill** — This is an expert workflow/pattern guide, not API reference documentation.
> Originally from [twostraws/Swift-Testing-Agent-Skill](https://github.com/twostraws/Swift-Testing-Agent-Skill) by Paul Hudson. MIT License.

# Swift Testing Patterns

Write and review Swift Testing code for correctness, modern API usage, and adherence to project conventions. Report only genuine problems — do not nitpick or invent issues.

## Core Instructions

- Target Swift 6.2 or later, using modern Swift concurrency.
- Swift Testing does *not* support UI tests — XCTest must be used there.
- Do not rewrite existing XCTest to Swift Testing unless requested.

## Review Process