public void Setup()
{
supplier = TestSupplier.CreateNaked(session);
supplier.CreateSampleCore(session);
supplier.Prices[0].Core.Where(c => c.Producer != null)
.Each(c => TestAssortment.CheckAndCreate(session, c.Product, c.Producer));
var client = TestClient.CreateNaked(session);
var order = new TestOrder(client.Users[0], supplier.Prices[0]);
order.Processed = false;
order.WriteTime = DateTime.Today.AddDays(-1);
order.AddItem(supplier.Prices[0].Core[0], 1);
session.Save(order);
supplier.Maintain(session);
session.Transaction.Commit();
calculator = new CostCalculator();
ratings = RatingCalculator
.Caclucated(DateTime.Today.AddDays(-10), DateTime.Today)
.Take(3)
.ToArray();
}