swift-testing

Create Swift unit tests using the Swift Testing framework.

1|Updated Jun 24, 2026
One-click install
npx skills add https://github.com/eric-sabe/engsys --skill swift-testing-eric-sabe
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: swift-testing
Source: https://github.com/eric-sabe/engsys/tree/main/stacks/lang/swift/skills/swift-testing
Command: npx skills add https://github.com/eric-sabe/engsys --skill swift-testing-eric-sabe

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill eliminates the friction of writing and migrating Swift unit tests to the modern Swift Testing framework, removing the overhead of maintaining inconsistent legacy XCTest patterns, flaky async tests, and unorganized test suites for Swift 6+ and Xcode 16+ projects.

Core Features & Use Cases

  • Modern Test Syntax: Replace legacy XCTest assertions with @Test, #expect, #require, and @Suite for cleaner, more readable test code.
  • Advanced Test Patterns: Implement parameterized tests, async/actor-isolated testing, confirmation for async event validation, custom test traits, and known issue handling for flaky tests.
  • Test Architecture Best Practices: Apply protocol-based mocking, testable dependency injection, and logical suite organization to build maintainable, reliable test suites.
  • Use Case: A Swift developer migrating an existing XCTest suite to Swift Testing can use this Skill to convert test cases, add parameterized tests for repetitive validation logic, and configure custom tags for CI test filtering.

Quick Start

Request a complete Swift Testing test suite for your Swift data model, including parameterized validation tests, async error path tests, and custom tags to filter critical tests in your CI pipeline.

Frequently Asked Questions about swift-testing

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

FAQPage Schema
How do I migrate XCTest unit tests to the Swift Testing framework?

Parameterized tests in Swift Testing allow repetitive validation logic to run against multiple inputs efficiently. You can implement parameterized tests using the modern testing framework to replace exhaustive XCTest cases, applying custom tags to filter critical test runs in your CI pipeline.

Can I use Swift Testing for async and actor-isolated code testing?

Yes, Swift Testing fully supports async and actor-isolated code testing. The framework provides confirmation patterns specifically designed to validate asynchronous events reliably, eliminating the flaky test behaviors often associated with legacy XCTest async implementations.

What is the best way to organize a Swift Testing suite with custom traits?

The best way to organize a Swift Testing suite is by applying custom test traits and tags to categorize tests logically. This architecture allows developers to build maintainable test suites and configure custom tags specifically for filtering critical tests during CI pipeline execution.

How do I handle known issues and flaky tests in Swift Testing?

Swift Testing handles known issues and flaky tests through built-in known issue handling mechanisms. This feature allows developers to explicitly mark and manage flaky tests within their Swift 6+ projects, ensuring that intermittent failures do not disrupt the overall CI pipeline execution.

Do I need Xcode 16 and Swift 6 to use the Swift Testing framework?

Yes, Swift Testing requires Xcode 16 and Swift 6 or later versions. This modern testing framework is designed to integrate seamlessly with Swift 6+ environments, replacing legacy XCTest patterns while supporting advanced features like actor-isolated testing and protocol-based mocking.