You have a date picker and you want to set the date on it using a NSDate object.

UITestDatePicker.swift

        let dateObject = NSDate()
        
        let dayFormatter = NSDateFormatter()
        dayFormatter.dateFormat = "MMM dd"
        
        let hourFormatter = NSDateFormatter()
        hourFormatter.dateFormat = "HH"
        
        let minuteFormatter = NSDateFormatter()
        minuteFormatter.dateFormat = "mm"
        
        let dayString = dayFormatter.stringFromDate(dateObject)
        let hourString = hourFormatter.stringFromDate(dateObject)
        let minuteString = minuteFormatter.stringFromDate(dateObject)
        
        dayPickerWheel.adjustToPickerWheelValue(dayString)
        hourPickerWheel.adjustToPickerWheelValue(hourString)
        minutePickerWheel.adjustToPickerWheelValue(minuteString)