Does this skill support the older XCTest framework?

This skill is specifically optimized for the modern Swift Testing framework (using @Test and #expect). While it understands Swift, its primary purpose is enforcing best practices for the new testing APIs introduced by Apple.

Can it help with complex parameterized tests?

Yes, it specifically checks for common pitfalls in parameterized tests, such as ensuring zip() is used correctly to avoid unintended Cartesian product behavior when testing multiple argument sets.

How does it improve test failure diagnostics?

It ensures that expressions are passed directly into the #expect macro rather than being pre-computed into booleans, which allows the framework to capture and display the exact values that caused a failure.

Does it handle Swift Concurrency and async testing?

Absolutely. It includes specific checks for async sequences, confirmation patterns, and ensures completion handlers are correctly wrapped in continuations for modern testing.

Swift Testing Code Review

Name: Swift Testing Code Review
Author: existential-birds

byexistential-birds

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Mobile Development

Reviews Swift Testing code for modern framework patterns, macro usage, and asynchronous verification best practices.

概要

This skill provides expert-level guidance for reviewing code written with the modern Swift Testing framework. It ensures developers utilize #expect and #require macros correctly to maintain high diagnostic quality, validates parameterized test logic to avoid common pitfalls like accidental Cartesian products, and verifies asynchronous testing patterns including confirmations and continuations. By enforcing standardized organization through @Suite and traits, it helps maintain performant, reliable, and well-structured test suites for iOS, macOS, and server-side Swift projects.

主な機能

Validates parameterized tests for correct argument handling and zip() usage.
Optimizes test suite organization using @Suite, tags, and serialization traits.
14 GitHub stars
Detects logic mirroring and pre-computed boolean pitfalls that reduce test reliability.
Analyzes #expect vs #require usage to ensure optimal failure diagnostics and control flow.
Reviews asynchronous patterns including async sequences and checked continuations.

ユースケース

Conducting deep code reviews for teams transitioning from XCTest to the modern Swift Testing framework.
Debugging non-deterministic async tests or tests with poor failure diagnostic information.
Refactoring existing test suites to improve parallel execution performance and organization.

概要

主な機能

Validates parameterized tests for correct argument handling and zip() usage.
Optimizes test suite organization using @Suite, tags, and serialization traits.
14 GitHub stars
Detects logic mirroring and pre-computed boolean pitfalls that reduce test reliability.
Analyzes #expect vs #require usage to ensure optimal failure diagnostics and control flow.
Reviews asynchronous patterns including async sequences and checked continuations.

ユースケース

Conducting deep code reviews for teams transitioning from XCTest to the modern Swift Testing framework.
Debugging non-deterministic async tests or tests with poor failure diagnostic information.
Refactoring existing test suites to improve parallel execution performance and organization.