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Provides file paths to language-specific reference files for the test ANALYSIS skills (assertion-quality, test-anti-patterns, test-gap-analysis, test-smell-detection, test-tagging). Call this skill to discover available extension files (e.g., dotnet.md for .NET/MSTest/xUnit/NUnit/TUnit, python.md for pytest/unittest, typescript.md for Jest/Vitest/Mocha, java.md for JUnit/TestNG, etc.).
Passed 18 of 21 test cases with the skill, and 4 of 21 without it.
and 15 more in the full report
15 fixed4 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 15 test cases the skill fixed. Same model, same prompt, with and without the skill.
Which extension file contains pattern rules for pytest fixtures, pytest markers, and unittest TestCase classes?
| Checked | Without skill | With skill |
|---|---|---|
| The response identifies extensions/python.md as the reference file. | Missed | Passed |
The instructions your model reads when the skill loads.
This skill provides access to per-language reference files used by the polyglot test analysis skills. Call this skill to get the list of available extension files, then read the one matching the target codebase's language and test framework.
| File | Languages / Frameworks | Contents |
|---|---|---|
| extensions/dotnet.md | .NET (C#/F#/VB) — MSTest, xUnit, NUnit, TUnit | Test markers, assertion APIs, sleep/delay patterns, skip annotations, mystery guest, integration markers, setup/teardown, tag support |
| extensions/python.md | Python — pytest, unittest | Same categories, with pytest fixtures/markers and unittest TestCase |
| extensions/typescript.md | TypeScript / JavaScript — Jest, Vitest, Mocha, Jasmine, node:test | Same categories, with async/await pitfalls |
| extensions/java.md | Java — JUnit 4, JUnit 5 (Jupiter), TestNG | Same categories, with @Tag / @Category / groups |
| extensions/go.md | Go — testing package, testify | Same categories, with table-driven idiom and build tags |
| extensions/ruby.md | Ruby — RSpec, Minitest | Same categories, with RSpec metadata and Minitest tags |
| extensions/rust.md | Rust — built-in #[test], cargo test | Same categories, with #[ignore], #[should_panic], feature flags |
| extensions/swift.md | Swift — XCTest, Swift Testing | Same categories, with @Test, @Tag, @Suite |
| extensions/kotlin.md | Kotlin — JUnit 5, Kotest, MockK | Same categories, with @Tag and Kotest tags |
| extensions/powershell.md | PowerShell — Pester v5 | Same categories, with -Tag and Skip |
| extensions/cpp.md | C++ — GoogleTest, Catch2, doctest | Same categories, with [tags] and * filters |
Each extension file declares per-capability support so skills can gate behaviour safely:
test-tagging skill) — one of:
auto-edit — language has a canonical attribute/marker the skill can safely write.test cases passed, vs 4 / 21 without
Published skills whose descriptions closely match this one, with their headline benchmark lift.
More skills from the same source and nearby in the registry, with their headline benchmark lift.