Swift Unit Testing Skill SKILL.md skillA
Swift Unit Testing Skill from fal3/claude-skills-collection is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add fal3/claude-skills-collection/Swift Unit Testing Skill@git:20260917.7201e74Pins git:20260917.7201e74 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- fal3/claude-skills-collection
- Path
skills/swift-unit-testing-skill/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260917.7201e74, committed Sep 17, 2026
- First version recorded
- Oct 22, 2025
- Size
- 7,617 bytes
- Repository stars
- 20
- License
- MIT
Design, write, migrate, and review Swift unit and integration tests using Swift Testing by default, with XCTest retained for UI automation, performance metrics, Objective-C interoperability, and legacy suites. Use for @Test, #expect, #require, parameterized tests, async tests, dependency injection, mocks/fakes, test plans, XCTest, XCUITest, TDD, flaky tests, and test architecture. Do not use UI-test polling or XCTest subclasses for ordinary new Swift unit tests, and do not introduce…
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
# Swift Unit Testing Build deterministic tests around observable behavior. Prefer Swift Testing for new Swift unit and integration tests; choose XCTest only where it still provides the required runner or API. ## Compatibility baseline - Swift Testing requires Swift 6 / Xcode 16 or newer. It supports Apple platforms, Linux, and Windows. - XCTest remains appropriate for `XCUIApplication`, `XCTMetric`, Objective-C tests, and incremental maintenance of existing XCTest suites. - Swift Testing and XCTest can coexist in one test target. Do not mix `@Test` methods into an `XCTestCase` subclass. - State the app's actual deployment targets and CI Xcode version before recommending availability-sensitive traits or APIs. - Treat APIs first introduced after the installed SDK as future-cycle features and gate them explicitly. ## Select the test layer | Goal | Default | | --- | --- | | Pure Swift unit or integration behavior | Swift Testing | | Async/throws, parameterized cases, traits, tags | Swift Testing | | UIKit/SwiftUI end-to-end interaction | XCTest UI testing | | Runtime, CPU, memory, launch, or signpost metrics | XCTest performance APIs | …
Read the whole file at its exact version.
How to install
mdr add fal3/claude-skills-collection/Swift Unit Testing Skill@sha256:e25630d57b9b7164The line at the top of this page pins the label git:20260917.7201e74, 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_2ixramm3kbmaocn6)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Oct 22, 2025 and Sep 17, 2026, about one every 165 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260917.7201e74 latest | 2026-09-17 | 7201e74 | 7,617 B | A | view · diff |
| git:20260814.a9c26d7 | 2026-08-14 | a9c26d7 | 7,620 B | A | view · diff |
| v1 | 2025-10-22 | 4c2260c | 16,248 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 (7617 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
fal3/claude-skills-collection · 20 stars · license MIT · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2ixramm3kbmaocn6 GET https://markdownregistry.com/api/v1/resolve?ref=fal3/claude-skills-collection/Swift Unit Testing Skill GET https://markdownregistry.com/api/v1/blob/e25630d57b9b7164fe70b70361f1ad3bc5310d19deec9856d1bd7f397fd6e278
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.