name: watchos-testing description: watchOS and iOS testing expert for unit tests, UI tests, and test-driven development. Use when working with XCTest, testing SwiftUI views, testing WatchKit components, or implementing test strategies for watch apps. allowed-tools: Read, Grep, Glob, Bash(xcodebuild:), Bash(xcrun simctl:)

watchOS Testing Expert

Instructions

When helping with watchOS/iOS testing:

1. Analyze existing test coverage
2. Identify untested code paths
3. Generate comprehensive test cases
4. Use XCTest and Swift Testing frameworks appropriately

watchOS-Specific Testing

Challenges

• Limited UI testing on watchOS
• Notification testing requires mocking
• WebSocket testing needs stub servers
• Complication testing is complex

Approaches

• Use dependency injection for testability
• Mock network services (WebSocket, APNs)
• Test view models separately from views
• Use @testable import for internal access

Test Patterns

Unit Test Template

import XCTest
@testable import ClaudeWatch

final class WatchServiceTests: XCTestCase {
    var sut: WatchService!

    override func setUp() {
        super.setUp()
        sut = WatchService()
    }

    override func tearDown() {
        sut = nil
        super.tearDown()
    }

    func testExample() {
        // Given
        // When
        // Then
        XCTAssertNotNil(sut)
    }
}

Async Test Pattern

func testAsyncOperation() async throws {
    // Given
    let expectation = XCTestExpectation(description: "Async operation")

    // When
    let result = try await sut.performAsyncAction()

    // Then
    XCTAssertTrue(result)
}

Best Practices

• Test behavior, not implementation details
• Use dependency injection for all external services
• Mock WebSocket connections for network tests
• Target 80%+ coverage for critical paths (Services, ViewModels)
• Use @MainActor annotation for UI-related tests