swift-protocol-di-testing SKILL.md skillA
swift-protocol-di-testing from affaan-m/ecc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add affaan-m/ecc/swift-protocol-di-testing@git:20260607.4ad5756Pins git:20260607.4ad5756 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- affaan-m/ecc
- Path
.kiro/skills/swift-protocol-di-testing/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260607.4ad5756, committed Jun 7, 2026
- Size
- 6,077 bytes
- Repository stars
- 299,696
- License
- MIT
Protocol-based dependency injection for testable Swift code — mock file system, network, and external APIs using focused protocols and Swift Testing.
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 Protocol-Based Dependency Injection for Testing
Patterns for making Swift code testable by abstracting external dependencies (file system, network, iCloud) behind small, focused protocols. Enables deterministic tests without I/O.
## When to Activate
- Writing Swift code that accesses file system, network, or external APIs
- Need to test error handling paths without triggering real failures
- Building modules that work across environments (app, test, SwiftUI preview)
- Designing testable architecture with Swift concurrency (actors, Sendable)
## Core Pattern
### 1. Define Small, Focused Protocols
Each protocol handles exactly one external concern.
```swift
// File system access
public protocol FileSystemProviding: Sendable {
func containerURL(for purpose: Purpose) -> URL?
}
// File read/write operations
public protocol FileAccessorProviding: Sendable {
func read(from url: URL) throws -> Data
func write(_ data: Data, to url: URL) throws
func fileExists(at url: URL) -> Bool
}
// Bookmark storage (e.g., for sandboxed apps)
public protocol BookmarkStorageProviding: Sendable {
func saveBookmark(_ data: Data, for key: String) throws
…Read the whole file at its exact version.
How to install
mdr add affaan-m/ecc/swift-protocol-di-testing@sha256:00e270fc22289737The line at the top of this page pins the label git:20260607.4ad5756, 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_ex4k6t2mgktnzggq)
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Versions
The registry has recorded 1 version of this file, committed on Jun 7, 2026.
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 (6077 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
affaan-m/ecc · 299,696 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ex4k6t2mgktnzggq GET https://markdownregistry.com/api/v1/resolve?ref=affaan-m/ecc/swift-protocol-di-testing GET https://markdownregistry.com/api/v1/blob/00e270fc222897374cd09512536b22bea291b9ee921f9d610b2d020400332c04
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.