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.
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Guide Skill — This is an expert workflow/pattern guide, not API reference documentation. Originally from twostraws/Swift-Testing-Agent-Skill by Paul Hudson. MIT License.
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.
references/core-rules.md.references/writing-better-tests.md.references/async-tests.md.references/new-features.md.references/migrating-from-xctest.md.If doing partial work, load only the relevant reference files.
| Topic | Reference |
|---|---|
Structs over classes, @Suite, parallel execution, withKnownIssue, tags | references/core-rules.md |
Test hygiene, structure, DI, #expect vs #require, Issue.record(), verification methods | references/writing-better-tests.md |
Serialized tests, confirmation(), time limits, actor isolation, mocking networking | references/async-tests.md |
| Raw identifiers, exit tests, attachments, test scoping traits, range-based confirmations | references/new-features.md |
| XCTest-to-Swift Testing conversion, assertion mappings, floating-point tolerance | references/migrating-from-xctest.md |
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Optimize Apple App Store metadata in store.config.json for ASO (App Store Optimization). Use when working with store.config.json, App Store keywords, titles, subtitles, descriptions, or localizing app metadata. Helps maximize app visibility and downloads.
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Index of Apple developer documentation for iOS, macOS, and related frameworks. Use when looking up what APIs exist in a framework, browsing available documentation, or deciding what docs to fetch. Covers SwiftUI, UIKit, Core Animation (QuartzCore), XCTest, HealthKit, Combine, SwiftData, and more.
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API reference: BackgroundTasks. Query for BGTaskScheduler, app refresh, background processing.
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API reference: Combine. Query for publishers, subscribers, operators, async data streams.
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API reference: Core Animation (QuartzCore). Query for CALayer, CAAnimation, CABasicAnimation, CAKeyframeAnimation, CASpringAnimation, CATransaction, CAShapeLayer, CAGradientLayer, CAEmitterLayer, CATransform3D, CADisplayLink.
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API reference: Core Haptics. Query for CHHapticEngine, haptic patterns, tactile feedback.
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