public void CanAddOrder()
{
InMemoryOrderRepo repo = new InMemoryOrderRepo();
DateTime date = new DateTime(2012, 5, 4);
Material product = new Material("Wood", 2.50m, 4.50m);
StateTax tax = new StateTax("HI", "Hawaii", 15m);
Order order = new Order(date, product, tax, "Bob", 150);
repo.SaveOrder(order);
var orders = repo.GetAllOrdersOnDate(new DateTime(2012, 5, 4));
Assert.AreEqual(2, orders.Count());
}
