Close #73: Check inventory when creating an order

common.props

@@ -1,7 +1,7 @@
 <Project>
   <PropertyGroup>
     <LangVersion>latest</LangVersion>
-    <Version>0.3.8</Version>
+    <Version>0.4.0</Version>
     <NoWarn>$(NoWarn);CS1591</NoWarn>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <Authors>EasyAbp Team</Authors>

modules/EasyAbp.EShop.Orders/src/EasyAbp.EShop.Orders.Application/EasyAbp/EShop/Orders/Orders/NewOrderGenerator.cs

@@ -4,6 +4,7 @@ using System.Collections.ObjectModel;
 using System.Linq;
 using System.Threading.Tasks;
 using EasyAbp.EShop.Orders.Orders.Dtos;
+using EasyAbp.EShop.Products.ProductInventories;
 using EasyAbp.EShop.Products.Products;
 using EasyAbp.EShop.Products.Products.Dtos;
 using Volo.Abp.DependencyInjection;
@@ -75,6 +76,12 @@ namespace EasyAbp.EShop.Orders.Orders
             {
                 throw new OrderLineInvalidQuantityException(product.Id, productSku.Id, input.Quantity);
             }
+
+            if (productSku.Inventory < input.Quantity)
+            {
+                throw new InventoryInsufficientException(input.ProductId, input.ProductSkuId, input.Quantity,
+                    productSku.Inventory);
+            }
             
             return new OrderLine(
                 id: _guidGenerator.Create(),