Why use protocol-based DI in Swift?

It decouples your business logic from external systems like the file system or network, making your code significantly easier to test, maintain, and run in Xcode previews.

Can I simulate network errors with this approach?

Absolutely. By using mock implementations, you can configure specific error properties to trigger catch blocks and test your app's error handling logic.

Does this skill support Swift Concurrency?

Yes, the patterns provided specifically address Sendable conformance and how to inject dependencies safely into actors.

Is this compatible with the new Swift Testing framework?

Yes, the skill is designed to work with the modern Swift Testing framework while remaining compatible with XCTest.

Swift Protocol DI & Testing

Name: Swift Protocol DI & Testing
Author: Fabio29T

byFabio29T

0•

보안 및 테스팅

Implements protocol-based dependency injection to create highly testable and mockable Swift codebases.

This skill provides standardized patterns for decoupling Swift applications from external dependencies like file systems, networks, and APIs using focused protocols. It enables developers to write deterministic tests, simulate complex error paths, and ensure full compatibility with Swift Concurrency (actors and Sendable) by abstracting I/O behind mockable interfaces. This approach is essential for building robust, modular Swift applications that function seamlessly across production, automated testing suites, and SwiftUI preview environments.

주요 기능

01Default parameter injection patterns for clean production code

02Swift Concurrency support with Sendable-conformant protocols

03Error simulation for testing edge cases and failure paths

040 GitHub stars

05Mock implementations for deterministic unit testing without I/O

06Small, focused protocol abstractions for external concerns

사용 사례

01Creating stable SwiftUI previews for components that rely on external data

02Testing file system operations without performing actual disk I/O

03Simulating network failures or API errors in unit and integration tests

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add fabio29t/everything-claude swift-protocol-di-testing

For use in Claude.ai and ChatGPT

주요 기능

01Default parameter injection patterns for clean production code

02Swift Concurrency support with Sendable-conformant protocols

03Error simulation for testing edge cases and failure paths

040 GitHub stars

05Mock implementations for deterministic unit testing without I/O

06Small, focused protocol abstractions for external concerns

사용 사례

01Creating stable SwiftUI previews for components that rely on external data

02Testing file system operations without performing actual disk I/O

03Simulating network failures or API errors in unit and integration tests

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add fabio29t/everything-claude swift-protocol-di-testing

For use in Claude.ai and ChatGPT