@ioloro/ios-testing

A Claude Code skill for writing correct, modern iOS and macOS tests using Swift Testing, XCTest, and XCUITest.

What it does

This skill teaches Claude (and other AI) when and how to use each Apple testing framework:

• Swift Testing — default for all new unit and integration tests (@Test, #expect, @Suite, parameterized tests)
• XCTest — performance benchmarks (measure {}, XCTClockMetric, XCTCPUMetric, XCTMemoryMetric, XCTStorageMetric), energy/power measurement (XCTOSSignpostMetric)
• XCUITest — UI automation, accessibility audits, animation hitch testing, scroll performance

Why

AI models frequently:

• Default to XCTest when Swift Testing should be used
• Mix XCTAssertEqual with #expect in the same file
• Use bare measure {} instead of specific XCTMetric subclasses
• Skip parameterized tests in favor of copy-pasted test functions
• Forget about performance, power, and animation testing entirely

This skill fixes all of that.

Install

# Via npm
npm install -g @ioloro/ios-testing

# Then enable in Claude Code
/plugin install @ioloro/ios-testing

What's included

| File | Covers | |------|--------| | SKILL.md | Framework selection rules, critical rules, decision tree | | swift-testing.md | @Test, @Suite, #expect, #require, parameterized tests, traits, tags, async patterns, confirmation() | | xctest.md | measure {}, all XCTMetric subclasses, manual measurement, signpost-based energy testing, baselines | | xcuitest.md | Element queries, accessibility identifiers, waiting patterns, launch config, scroll/animation performance, accessibility audits, page object pattern |

License

MIT