swift-testing-agent-skill

# Swift Testing Guidance for [COMPANY]

## Test Doubles Implementation
- **Mocks**: Use `Mock` to simulate dependencies, e.g., `MockAPIClient` for network calls.
- **Stubs**: Implement `Stub` for predefined responses, e.g., `StubUserService` returning mock user data.

## Fixtures Setup
- **Shared Fixtures**: Create `TestData` structs for reusable test data.
- **Temporary Fixtures**: Use `XCTestCase` setup methods for transient data.

## Async Patterns
- **Async/Await**: Use `await` with `XCTAssert` for async test assertions.
- **Combine**: Test publishers with `XCTAssertPublishers`.