diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/UOneManyMany 2.cs b/Src/Asp.Net/SqlServerTest/UnitTest/UOneManyMany 2.cs
index e5611fa26..0bc31a981 100644
--- a/Src/Asp.Net/SqlServerTest/UnitTest/UOneManyMany 2.cs	
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/UOneManyMany 2.cs	
@@ -116,6 +116,12 @@ namespace OrmTest
             db.InsertNav(list.Last().school_001)
               .ThenInclude(x => x.rooms)
               .ThenInclude(x => x.desk);
+
+            if (db.Queryable<Desk_002>().Count() != 4 || db.Queryable<Room_002>().Count() != 4
+               || db.Queryable<School_002>().Count() != 2 || db.Queryable<Student_002>().Count() != 0)
+            {
+                throw new Exception("unit error");
+            }
         }
 
         public class Student_002