Add unit test

Src/Asp.NetCore2/SqliteTest/UnitTest/CrossDatabase01.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace OrmTest
+{
+    public class CrossDatabase01
+    {
+        public static void Init() 
+        {
+
+        }
+    }
+}

Src/Asp.NetCore2/SqliteTest/UnitTest/CrossDatabase02.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace OrmTest
+{
+    public class CrossDatabase02
+    {
+        public static void Init() 
+        {
+
+        }
+    }
+}

Src/Asp.NetCore2/SqliteTest/UnitTest/CrossDatabase03.cs

@@ -0,0 +1,71 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using SqlSugar;
+namespace OrmTest
+{
+    public class CrossDatabase03
+    {
+        public static void Init()
+        {
+            var db = new SqlSugarClient(new List<ConnectionConfig>()
+            {
+                new ConnectionConfig(){ConfigId="OrderDb",DbType=DbType.Sqlite,ConnectionString="DataSource=/Db_OrderDb.sqlite",IsAutoCloseConnection=true},
+                new ConnectionConfig(){ConfigId="OrderItemDb",DbType=DbType.Sqlite,ConnectionString="DataSource=/Db_OrderItemDb.sqlite",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.QueryableWithAttr<OrderItem>()
+                .CrossQueryWithAttr()
+                .Includes(z => z.Order)
+                .ToList();
+
+            Console.WriteLine("OrderDb");
+            foreach (var item in db.GetConnection("OrderDb").DbMaintenance.GetTableInfoList(false))
+            {
+                Console.WriteLine(item.Name);
+            }
+            Console.WriteLine("OrderItemDb");
+            foreach (var item in db.GetConnection("OrderItemDb").DbMaintenance.GetTableInfoList(false))
+            {
+                Console.WriteLine(item.Name);
+            }
+        }
+        [Tenant("OrderDb")]
+        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("OrderDetail")]
+        [Tenant("OrderItemDb")]
+        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; }
+        }
+    }
+}

Src/Asp.NetCore2/SqliteTest/UnitTest/Main.cs

@@ -31,6 +31,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            CrossDatabase03.Init();
             ULock.Init();
             UNavQuery01.Init();
             UCustom012.Init();