modernize-tests skillA
modernize-tests is agent-read markdown (skill) from tartinerlabs/skills: Modernize test suites to use modern Swift Testing features or migrate from XCTest..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Modernize Tests
Test modernization refers to two potential actions: migrating from XCTest to Swift Testing, and updating existing Swift Testing tests to use recommended patterns.
XCTests should be migrated to Swift Testing when possible. However, not all XCTests can be migrated to Swift Testing.
- UI tests (those that use XCUIAutomation) cannot be written with Swift Testing, and must remain XCTests.
- XCTests that use the `measure { ... }` family of APIs for performance measurement cannot be migrated. However, other test methods within an XCTestCase that do not use XCTest performance APIs can be migrated.
## Migration Reference
### Imports
Replace `import XCTest` with `import Testing`. A file can import both if it contains mixed test content during incremental migration.
When removing `import XCTest`, check whether the file uses Foundation types (URL, CharacterSet, ProcessInfo, Data, etc.). XCTest re-exports Foundation, so add `import Foundation` if needed.
### Test Classes to Suites
Remove `XCTestCase` inheritance. Prefer structs over classes:
- `final class FoodTruckTests: XCTestCase { ... }` -> `struct FoodTruckTests { ... }`
…Read the whole file at its exact version.
How to install
mdr add tartinerlabs/skills/modernize-tests@git:20260713.ba4f7f8mdr add tartinerlabs/skills/modernize-tests@sha256:b036784a0d2bca48Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_t2qhuhskd627wnq3)
1 badge views in 30 days
Versions
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 (9464 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 2026-09-19 · 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/b036784a0d2bca48840f07cdc8c175352664236e1ebfe6312fe0f14083feb49e
Your agent 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.
More from tartinerlabs/skills
Every file in tartinerlabs/skills