public void CreateDatabaseSchemaTest() { ProductModel product = new ProductModel(); StockLevelModel stockLevel1 = new StockLevelModel(); stockLevel1.Amount = 10; stockLevel1.Products.Add(product); product.ProductName = "可口可乐"; product.UnitName = "瓶子"; product.StockLevels.Add(stockLevel1); productService.Add(product); stockLevelService.Add(stockLevel1); WarehouseModel warehouse = new WarehouseModel(); warehouse.Address = "chengdu shi"; warehouse.StockLevels.Add(stockLevel1); stockLevel1.Warehouses.Add(warehouse); warehouseService.Add(warehouse); IList <string> productNames = productService.GetAllProductNames(); Console.WriteLine(productNames); DistributorModel distributor = new DistributorModel(); distributor.Name = "黄凯"; distributor.Address = "贵州"; distributorService.Add(distributor); IList <string> distributorNames = distributorService.GetAllDistributorNames(); Console.WriteLine(distributorNames); }