Smart way to pick a random function

I am trying to pick and run a random function in swift.

Currently I have implemented a switch case like this

  switch Int.random(in: 1...2) {
                            case 1:   functionOne()
                            case 2:   functionTwo()
                            default:  print("error")
                            }

if there are more options the code gets really excessive.

How can I improve the code to make it save the extra lines? The optimum would be:

  [functionOne(), functionTwo()].randomElement()

This does not work but just runs the last element in the array. Is there a way to put functions in an array and let them run?