Swift Post Testability Example Code

Testability5.swift

func application(_ application: UIApplication, 
                 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
    let isUnitTesting = ProcessInfo.processInfo.environment["IS_UNIT_TESTING"] == "1"
    if isUnitTesting == false {
        // Do UI-related setup, which can be skipped when testing
    }
    return true
}