Add unit test

Src/Asp.Net/SqlServerTest/SqlServerTest.csproj

@@ -111,6 +111,7 @@
     <Compile Include="UnitTest\UCustom020.cs" />
     <Compile Include="UnitTest\UCustom019.cs" />
     <Compile Include="UnitTest\UintDynamic.cs" />
+    <Compile Include="UnitTest\UNavDynamic111N.cs" />
     <Compile Include="UnitTest\UnitManyToMany.cs" />
     <Compile Include="UnitTest\UCustom018.cs" />
     <Compile Include="UnitTest\Models\Order.cs" />

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

@@ -31,6 +31,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            UNavDynamic111N.Init();
             UCustomNavigate01.Init();
             UCustom023.Init();
             UCustom22.Init();

Src/Asp.Net/SqlServerTest/UnitTest/UNavDynamic111N.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SqlSugar;
+namespace OrmTest
+{
+    public class UNavDynamic111N
+    {
+
+        public static void Init() 
+        {
+
+            var db = NewUnitTest.Db;
+            db.CodeFirst.InitTables<UnitaSchoolA, UnitaStudentA>();
+            db.DbMaintenance.TruncateTable<UnitaSchoolA, UnitaStudentA>();
+            db.Insertable(new UnitaSchoolA() { SchoolId = 1, CityId = 1001001, School_Name = "北大" }).ExecuteCommand();
+            db.Insertable(new UnitaSchoolA() { SchoolId = 2, CityId = 2, School_Name = "清华" }).ExecuteCommand();
+            db.Insertable(new UnitaSchoolA() { SchoolId = 3, CityId = 3, School_Name = "青鸟" }).ExecuteCommand();
+
+            db.Insertable(new UnitaStudentA() { StudentId = 1, SchoolId = 1, Name = "北大jack" }).ExecuteCommand();
+            db.Insertable(new UnitaStudentA() { StudentId = 2, SchoolId = 1, Name = "北大tom" }).ExecuteCommand();
+            db.Insertable(new UnitaStudentA() { StudentId = 3, SchoolId = 2, Name = "清华jack" }).ExecuteCommand();
+            db.Insertable(new UnitaStudentA() { StudentId = 4, SchoolId = 2, Name = "清华tom" }).ExecuteCommand();
+            db.Insertable(new UnitaStudentA() { StudentId = 5, SchoolId = null, Name = "清华tom" }).ExecuteCommand();
+            db.Insertable(new UnitaStudentA() { StudentId = 6, SchoolId = 3, Name = "青鸟学生" }).ExecuteCommand();
+
+            var list=db.Queryable<UnitaStudentA>()
+                .Includes(x => x.SchoolA).ToList();
+        }
+        public class UnitaStudentA
+        {
+            public int StudentId { get; set; }
+            public string Name { get; set; }
+            [SugarColumn(IsNullable = true)]
+            public int? SchoolId { get; set; }
+            [Navigate(NavigateType.OneToOne, nameof(SchoolId),nameof(UnitaSchoolA.SchoolId))]
+            public UnitaSchoolA SchoolA { get; set; }
+ 
+
+        }
+        public class UnitaSchoolA
+        {
+            public int SchoolId { get; set; }
+            [SugarColumn(IsNullable = true)]
+            public int CityId { get; set; }
+            [SugarColumn(ColumnName = "SchoolName")]
+            public string School_Name { get; set; }
+
+        }
+    }
+}