Wrapped Asynchronous Function with ReactiveSwift

reactiveSwiftWrapper-WrappedFunction.swift

// Wrapping Asynchronous Function
func wrappedFunction() -> SignalProducer<String, MockError> {
	return SignalProducer { observer, disposable in
		mockAsyncFunction { (optionalReturnedString, optionalReturnedError) in
			if let returnedString = optionalReturnedString {
				observer.send(value: returnedString)
				observer.sendCompleted()
			} else if let returnedError = optionalReturnedError {
				observer.send(error: returnedError)
			}
		}
	}
}