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This skill gives concrete guidance for Swift Testing: test structure, assertions, parameterized tests, async patterns, and incremental migration from XCTest. It helps Swift developers on Apple platforms and server projects write clearer tests, isolate flaky failures, and adopt modern test patterns without rewriting everything at once.
WHO IT'S FOR
Apple Platform Developers
write modern Swift tests for Apple platforms
Swift Server Developers
write and maintain tests for Swift server projects
Compatible AgentsThe repository documents support for these agents. The skills may also work with other agents that can load SKILL.md files, but they may need some setup or small changes.
Follow the documented setup, then try a first task.
I’m using
Install with skills.sh
Installs: Installs the swift-testing-expert skill from the Swift-Testing-Agent-Skill repository. · Any AI coding tool that supports the Agent Skills open format
Run this terminal command to add the swift-testing-expert skill from the repository.
Path to a Swift test target, or its pasted test code
Xcode/Swift version and platform targets
Whether failures are deterministic or flaky
Any shared databases, files, network resources, or global state used by the tests
Use the swift-testing-expert skill and review this test target for migration opportunities and flaky parallel behavior. Start with a concise list of the highest-value findings and suggested next steps; do not modify files. Test target: <path-or-pasted-test-code>.
Path to, or pasted code for, a small group of repetitive Swift tests
Xcode/Swift version and platform targets
Use the swift-testing-expert skill to review these repetitive Swift tests: <path-or-pasted-tests>. Propose one small conversion to a parameterized @Test(arguments:) test, with a clean argument design and a brief explanation of how the change preserves behavior. Do not modify files.
Path to, or pasted code for, an XCTest test or test file
Xcode/Swift version and platform targets
Use the swift-testing-expert skill to assess this XCTest test or test file: <path-or-pasted-test-code>. Produce a small first-step migration plan that converts assertions before reorganizing suites or adding parameterization and traits. Identify anything that should remain in XCTest, such as UI automation, performance metrics, or Objective-C-only test code. Do not modify files.
Claude
Codex
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