public void FindCustomerByTime()
{
haircutter1.Times.Add(new DateTime(2016, 12, 12, 18, 00, 00));
customer1.Times.Add(new DateTime(2016, 12, 12, 17, 00, 00));
customer2.Times.Add(new DateTime(2016, 12, 12, 20, 00, 00));
customer2.Times.Add(new DateTime(2016, 12, 12, 18, 00, 00));
DateTime nextTime = haircutter1.NextTime();
Assert.AreEqual(userFunctions.FindCustomerByTime(nextTime, "Louise"), customer2);
}