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Macos test diagnoser

Skill Xopoko/plug-n-skills/plugins/build-swift-apps/skills/macos-test-diagnoser

Triage failing macOS tests across Xcode and SwiftPM workflows. Use when asked to run macOS tests, narrow failing scopes, explain assertion or crash failures, or separate real test regressions from setup and environment problems.From its SKILL.md

Install
npx -y skills add Xopoko/plug-n-skills --skill macos-test-diagnoser

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

  • 9 stars9 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

SKILL.md

1.6 KB, 323 tokens by cl100k_base, as published. Nobody here has run it

macOS Test Diagnoser

Quick Start

Use this skill to run the smallest meaningful test scope first, classify failures precisely, and avoid treating every test failure like a product bug.

Workflow

  1. Detect the test harness.

    • Use xcodebuild test for Xcode-based projects.
    • Use swift test for SwiftPM packages.

  2. Narrow the scope.

    • If the user gave a target, product, or test filter, use it.
    • If not, prefer the smallest likely failing target before a full suite.

  3. Classify the result.

    • Build failure
    • Assertion failure
    • Crash or signal
    • Async timing or flake
    • Environment or fixture setup issue
    • Missing entitlement or host app issue

  4. Rerun intelligently.

    • Use focused reruns when a specific case fails.
    • Avoid burning time on full-suite reruns without new information.

  5. Summarize clearly.

    • What command ran
    • Which tests failed
    • What kind of failure it was
    • The best next proof step or fix path

Guardrails

  • Distinguish compilation failures from test execution failures.
  • Call out when a test appears to assume iOS-only or simulator-only behavior.
  • Mark likely flakes as such instead of overstating confidence.

Output Expectations

Provide:

  • the command used
  • the smallest failing scope
  • the top failure category
  • a concise explanation of the likely cause
  • the next rerun or fix step

What ships with it: 1 file

301 B alongside SKILL.md

agents/

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