test.js

var five = require("johnny-five")
  , board = new five.Board()
  , leds  = [2, 3, 4, 5, 6, 7, 8, 9]

board.on("ready", function() {
  var led = new five.Led(6)
  this.repl.inject({unlockDoor: unlockDoor.bind(this, led)})
})

function unlockDoor(led) {
  led.on()
  this.wait(4000, function() {
    led.off()
  })
}
function dance(led, board) {
  led.on()
  board.wait(100, function() {
    led.off()
  })
}
function getRandomInt(min, max) {
  return Math.floor(Math.random() * (max - min) + min)
}