swift-test-driven-development

Guide Swift feature and bugfix implementation through the Red-Green-Refactor TDD cycle.

Updated Aug 27, 2026

Search Tags:#testing #tdd #unit testing #swift #xcode #xcuittest #swift testing

Ready to run

npx skills add https://github.com/StrongAI/claude-skills-code-swift-test-driven-development --skill swift-test-driven-development

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Skill: swift-test-driven-development
Source: https://github.com/StrongAI/claude-skills-code-swift-test-driven-development/tree/main
Command: npx skills add https://github.com/StrongAI/claude-skills-code-swift-test-driven-development --skill swift-test-driven-development

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps developers implement features and fix bugs in Swift projects by guiding them through the Test-Driven Development (TDD) process, ensuring robust and well-tested code.

Core Features & Use Cases

Swift Testing Framework: Leverages the Swift Testing framework for writing modern, concise tests.
TDD Cycle Implementation: Guides users through the Red-Green-Refactor cycle with Swift-specific tooling.
Testing Async/Actors: Provides patterns for testing concurrent Swift code, including async/await and actors.
Dependency Injection: Demonstrates best practices for making Swift code testable through dependency injection.
UI Testing Patterns: Outlines strategies for TDD in SwiftUI, including snapshot and XCUITest.
Use Case: When starting a new feature in a Swift application, use this Skill to write a failing test first, then implement the minimal code to pass, and finally refactor.

Quick Start

Use the swift-test-driven-development skill to write a new test for a Swift function that adds items to a shopping cart.

Frequently Asked Questions about swift-test-driven-development

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I write unit tests for asynchronous Swift code using async/await and actors?▼

Testing asynchronous Swift code requires specific patterns for async/await and actors to handle concurrency safely. This Skill provides testing patterns for concurrent Swift code, ensuring your async functions and actors are validated correctly within the Test-Driven Development cycle.

What is the best way to start using Test-Driven Development in a Swift application?▼

Test-Driven Development in a Swift application follows the Red-Green-Refactor cycle: write a failing test first, implement the minimal code to pass it, then refactor. This Skill guides you through this TDD cycle using Swift-specific tooling and the modern Swift Testing framework.

How do I make my Swift code testable using dependency injection?▼

Making Swift code testable through dependency injection involves abstracting dependencies to allow mock injections during testing. This Skill demonstrates best practices for dependency injection patterns, ensuring your components are isolated and verifiable within your test suite.

Can I use XCUITest and snapshot testing for SwiftUI views?▼

XCUITest and snapshot testing are fully supported for validating SwiftUI views. This Skill outlines specific UI testing patterns for SwiftUI, including strategies for snapshot testing and XCUITest integration to drive your interface development through TDD.

Does this TDD approach support the modern Swift Testing framework in Xcode?▼

The Swift Testing framework is fully supported and leveraged for writing modern, concise tests. This Skill integrates the framework directly into the Test-Driven Development workflow, allowing you to write robust tests natively within your Xcode environment.

Why does testing @MainActor annotated code require special patterns in Swift?▼

Testing @MainActor code requires special patterns because UI-related operations must execute on the main thread, complicating async test execution. This Skill provides targeted patterns for testing actors and @MainActor isolated code, ensuring your concurrent Swift code remains thread-safe during validation.