Axiom Testing

Covers the entire testing landscape for Swift and Xcode, from unit tests with Swift Testing to UI automation with XCUITest. The quick reference table is genuinely useful for jumping to the right pattern when tests are flaky or slow. Notable for its opinionated stance on Swift Testing over XCTest for unit tests, complete with migration guidance and the "fast tests without simulator" architecture. The anti-rationalization section calling out sleep() in tests is spot on. Includes decision trees for routing to the right sub-skill and references to companion agents for automated test analysis. If you write tests in Swift, this consolidates patterns that would otherwise live in scattered Xcode documentation and Stack Overflow threads.

Install to Claude Code

npx -y skills add charleswiltgen/axiom --skill axiom-testing --agent claude-code