olbrichj

DispatchQueue.main.async {
    // execute async on main thread
}

olbrichj

class CustomThread: Thread {
  override func main() {
    do_something
  }
}

let customThread = CustomThread()
customThread.start()

olbrichj

let task = Process()
task.launchPath = "/bin/sh" //executable you want to run
task.arguments = arguments //here is the information you want to pass

task.terminationHandler = {
  // do here something in case the process terminates
}

task.launch()

olbrichj

func method2() {
  statement1 {
    callback1()
  }
  statement2
}

olbrichj

func method1() {
  statement1()
  statement2()
  statement3()
  statement4()
}

olbrichj

var paws: MonkeyPaws?

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    if CommandLine.arguments.contains("--MonkeyPaws") {
        paws = MonkeyPaws(view: window!)
    }
    return true
}

olbrichj

func testMonkey() {
    let application = XCUIApplication(bundleIdentifier: "de.olbrich.jan.SnapshotTesting")
    _ = application.descendants(matching: .any).element(boundBy: 0).frame
    let monkey = Monkey(frame: application.frame)
    monkey.addDefaultUIAutomationActions()
    monkey.addXCTestTapAlertAction(interval: 100, application: application)

    monkey.monkeyAround()
}

olbrichj

func getRandomCoordinate() -> XCUICoordinate {
  let x = CGFloat(Float(arc4random()) / Float(UINT32_MAX))
  let y = CGFloat(Float(arc4random()) / Float(UINT32_MAX))
        
  let vector = CGVector(dx: x, dy: y)
  let coordinate = getCoordinateForVector(vector: vector)
        
  return coordinate
}

olbrichj

// our algorithm has this signature
func isCorrectEmail(email Email) -> Bool

property("emails should always be correct") <- forAll { (email: Email) in
  return isCorrectEmail(email)
}

olbrichj

extension Email: Arbitray {
  public static var arbitrary: Gen<Email> {
    return Gen.compose { comp in
      return Email(comp.generate(localEmail), comp.generate(hostname), comp.generate(tld))
    }
  }
}