modernize-tests SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
modernize-tests from tartinerlabs/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tartinerlabs/skills/modernize-tests@git:20261106.0aff73cPins git:20261106.0aff73c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tartinerlabs/skills
- Path
xcode-skills/modernize-tests/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261106.0aff73c, committed Nov 6, 2026
- First version recorded
- Jul 13, 2026
- Size
- 8,954 bytes
- Repository stars
- 8
- License
- MIT
Migrate XCTests and XCUIAutomation suites to Swift Testing, and update existing Swift Testing tests to recommended patterns. Use when working with XCTest, XCUIAutomation, or when improving existing #expect/#require, @Test, and @Suite code.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
This skill covers two distinct actions:
- Migrating XCTests to Swift Testing, and
- Updating existing Swift Testing tests to recommended patterns
Much of the migration process is standard (mapping XCTAssert functions to
`#expect`, test cases to `@Test`, etc). However, there are specific areas where
the migration may be non-obvious, so this file attempts to describe most of
those places.
## Workflow
Survey the candidate files in one pass before editing any of them, looking for
the patterns described in this skill.
Settle naming and `struct`/`final class` choices up front so they stay
consistent, then migrate in parallel. Test files are typically independent, so
fan out subagents if you feel necessary. For small migrations, skip the fan-out.
Within a file, migrate one test class at a time. A single file may contain both
XCTest and Swift Testing tests during migration, and may import both frameworks.
## What cannot migrate
- Tests using the `measure { ... }` family must remain XCTests. Other methods in
the same `XCTestCase` can still migrate.
## Behavioral differences
### Foundation is no longer re-exported
…Read the whole file at its exact version.
How to install
mdr add tartinerlabs/skills/modernize-tests@sha256:968a6226dc1bf5bdThe line at the top of this page pins the label git:20261106.0aff73c, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_t2qhuhskd627wnq3)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jul 13, 2026 and Nov 6, 2026, about one every 116 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261106.0aff73c latest | 2026-11-06 | 0aff73c | 8,954 B | A | view · diff |
| git:20260713.ba4f7f8 | 2026-07-13 | ba4f7f8 | 9,464 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8954 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
tartinerlabs/skills · 8 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_t2qhuhskd627wnq3 GET https://markdownregistry.com/api/v1/resolve?ref=tartinerlabs/skills/modernize-tests GET https://markdownregistry.com/api/v1/blob/968a6226dc1bf5bd88b34ab7a33da806bcadabc3a2030ed039d01831f59f5aad
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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