Update unit test

Src/Asp.Net/SqlServerTest/UnitTest/CrossDatabase01.cs

@@ -1,14 +1,77 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
-
+using SqlSugar;
+using System.Linq;
 namespace OrmTest
 {
     public class CrossDatabase01
     {
         public static void Init()
         {
+            var db = new SqlSugarClient(new List<ConnectionConfig>()
+            {
+                new ConnectionConfig(){ConfigId="OrderDb",DbType=DbType.SqlServer,ConnectionString="server=.;uid=sa;pwd=sasa;database=SQLSUGAR4XTEST",IsAutoCloseConnection=true},
+                new ConnectionConfig(){ConfigId="OrderItemDb",DbType=DbType.SqlServer,ConnectionString="server=.;uid=sa;pwd=sasa;database=SQLSUGAR4XTEST2",IsAutoCloseConnection=true  }
+            });
+
+            db.GetConnection("OrderDb").CodeFirst.InitTables<Order>();
+            db.GetConnection("OrderItemDb").CodeFirst.InitTables<OrderItem>();
+
+            db.GetConnection("OrderDb").DbMaintenance.TruncateTable<Order>();
+            db.GetConnection("OrderItemDb").DbMaintenance.TruncateTable<OrderItem>();
+
+            db.GetConnection("OrderDb").Insertable(new Order() { Id = 1, CreateTime = DateTime.Now, Name = "a", Price = 10, CustomId = 1 }).ExecuteCommand();
+            db.GetConnection("OrderItemDb").Insertable(new OrderItem() { OrderId = 1, CreateTime = DateTime.Now, Price = 10 }).ExecuteCommand();
 
+            var list =db.GetConnection("OrderItemDb").Queryable<OrderItem>()
+                .CrossQuery(typeof(Order), "OrderDb")
+                .Includes(z => z.Order)
+                .ToList();
+
+
+            var list2 = db.GetConnection("OrderDb").Queryable<Order>()
+                 .CrossQuery(typeof(OrderItem), "OrderItemDb")
+                 .Includes(z => z.Items)
+                  .ToList();
+
+
+            if (list.First().Order == null)
+            {
+                throw new Exception("unit error");
+            }
+            if (list2.First().Items.Count == 0)
+            {
+                throw new Exception("unit error");
+            }
+    
+        }
+        [SqlSugar.SugarTable("Order8")]
+        public class Order
+        {
+            [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+            public int Id { get; set; }
+
+            public string Name { get; set; }
+            public decimal Price { get; set; }
+            [SugarColumn(IsNullable = true)]
+            public DateTime CreateTime { get; set; }
+            [SugarColumn(IsNullable = true)]
+            public int CustomId { get; set; }
+            [Navigate(NavigateType.OneToMany, nameof(OrderItem.OrderId))]
+            public List<OrderItem> Items { get; set; }
+        }
+        [SqlSugar.SugarTable("OrderDetail8")]
+        public class OrderItem
+        {
+            [SqlSugar.SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+            public int ItemId { get; set; }
+            public int OrderId { get; set; }
+            public decimal? Price { get; set; }
+            [SqlSugar.SugarColumn(IsNullable = true)]
+            public DateTime? CreateTime { get; set; }
+            [Navigate(NavigateType.OneToOne, nameof(OrderId))]
+            public Order Order { get; set; }
         }
     }
 }