public void AddWarehouseDb() { var prod = new Product { Id = 1, Category = "category", Description = "ddeskr", Name = "banan", Price = 10 }; var shop = new Shop { Name = "ShopName", Address = "new addr", OpeningTime = "Manday Never", Chain = new DbChain().GetChain(1), Cvr = "12121212", Warehouses = new List <Warehouse>() }; var shopId = new DbShop().AddShop(shop); shop.Id = shopId; var warehouse = new Warehouse(10, 5, prod, shop, null); var warehouseDb = new DbWarehouse(); var id = warehouseDb.AddWarehouse(warehouse); warehouseDb.DeleteWarehouse(id); Assert.AreNotEqual(0, id); }