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swift-testing-expert

Guide Swift testing with #expect and #require macros and XCTest migration.

Updated Apr 6, 2026
Search Tags:#testing#migration#swift#xctest#parameterized-testing#trait-metadata
One-click install
npx skills add https://github.com/jperezdelreal/GymBro --skill swift-testing-expert-jperezdelreal
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swift-testing-expert
Source: https://github.com/jperezdelreal/GymBro/tree/main/.squad/skills/ios/swift-testing-expert
Command: npx skills add https://github.com/jperezdelreal/GymBro --skill swift-testing-expert-jperezdelreal

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Swift tests often become brittle, hard to migrate from XCTest, and difficult to scale across Apple platforms or Swift server projects. This skill provides expert guidance to structure tests, migrate where needed, and improve reliability with modern Swift Testing approaches.

Core Features & Use Cases

  • Structured guidance on test organization, macros (#expect/#require), and trait-based metadata.
  • Parameterized tests, test plans, parallel execution strategies, and approaches to reduce flakiness.
  • Migration pathways from XCTest, debugging strategies for flaky tests, and guidance for cross-platform Swift testing scenarios.

Quick Start

Review and enhance your Swift test suites for structure, parallel execution, and XCTest migration.

Frequently Asked Questions about swift-testing-expert

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I migrate XCTest suites to Swift Testing macros?▼

Migrating XCTest to Swift Testing involves replacing assertions with #expect and #require macros, adapting async waiting, and restructuring tests using trait-based metadata to improve overall test scalability.

How do I write parameterized tests in Swift Testing?▼

Parameterized tests in Swift Testing use trait-based metadata to inject multiple arguments into a single test function, reducing code duplication and ensuring broad coverage across various input combinations.

What is the best way to handle parallel test execution and flaky tests in Swift?▼

Handling parallel test execution and flaky Swift tests requires structured test plans, OS-gated execution annotations, and specific debugging strategies to isolate timing issues and improve reliability.

Does Swift Testing work with Swift server projects and Apple platforms?▼

Yes, Swift Testing works across Apple platforms and Swift server projects, providing guidance for cross-platform scenarios, structured test organization, and robust async waiting mechanisms.

When should I use #require instead of #expect in Swift tests?▼

Use #require to halt test execution upon failure when subsequent code depends on the assertion, whereas #expect continues evaluating remaining assertions to capture multiple failures within a single test run.

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