Appointment.GetAlertTime C# (CSharp) 메소드

    public static DateTime GetAlertTime(DateTime appointment, AlertLevel alertLevel)
    {
        throw new NotImplementedException("Please implement the (static) Appointment.GetAlertTime() method");
    }

 public void GetAlertTime_standard()
 {
     Assert.Equal(new DateTime(2019, 07, 25, 14, 15, 0),
                  Appointment.GetAlertTime(new DateTime(2019, 7, 25, 16, 0, 0),
                                           AlertLevel.Standard));
 }