Test Generator

Generate test templates for unit tests, integration tests, and UI tests in iOS/macOS apps.

When This Skill Activates

Use this skill when the user:

• Asks to "add tests" or "write tests" for their app
• Asks about unit testing, UI testing, or XCTest
• Wants to test ViewModels, services, or repositories
• Mentions TDD or test-driven development
• Asks about Swift Testing framework (@Test, #expect, @Suite)
• Wants mock objects or test helpers
• Asks about snapshot testing or preview tests

Decision Tree

What tests do you need?
|
+-- Unit tests for business logic
|   +-- Swift Testing (@Test, #expect) -- recommended for iOS 16+
|   +-- XCTest -- for iOS 13-15 support or existing XCTest projects
|
+-- Integration tests (component interactions)
|   +-- Protocol-based mocks with dependency injection
|
+-- UI tests
|   +-- XCUITest with Screen Object pattern
|
+-- Snapshot/preview tests
    +-- PreviewSnapshots or swift-snapshot-testing

Pre-Generation Checks

1. Project Context Detection

• Identify existing test targets and test runner
• Detect testing framework already in use (Swift Testing vs XCTest)
• Verify deployment target (Swift Testing requires iOS 16+ / macOS 13+)
• Identify project architecture pattern (MVVM, TCA, Repository, etc.)
• Locate source file directories

2. Conflict Detection

Search for existing test infrastructure:

Glob: **/*Tests.swift, **/*Tests/**/*.swift, **/*Spec.swift
Grep: "import XCTest" or "import Testing" or "@Suite" or "@Test"
Grep: "MockItemRepository" or "protocol.*Repository" or "class Mock"

If existing tests are found:

• Ask user whether to follow the existing framework (XCTest vs Swift Testing) or migrate
• Check for existing mock objects to reuse or extend
• Identify existing test helpers and factories