Add unit test

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

@@ -47,6 +47,14 @@ namespace OrmTest
             var ids2 = db.Insertable(new List<UnitIdentity01>() { new UnitIdentity01() { Name = "c" }, new UnitIdentity01() { Name = "c" } }).ExecuteReturnPkList<int>();
             if (ids2.Count(z => z > 0) != 2) { throw new Exception("unit error"); }
             if (db.Queryable<UnitIdentity01>().In(ids2).Count() != 2) { throw new Exception("unit error"); }
+            var list = new List<UnitIdentity01>();
+            for (int i = 0; i < 1000; i++)
+            {
+                list.Add(new UnitIdentity01() { Name = "a" });
+            }
+            var ids3 = db.Insertable(list).ExecuteReturnPkList<int>();
+            if (db.Queryable<UnitIdentity01>().In(ids3).Count() != 1000) { throw new Exception("unit error"); }
+            db.DbMaintenance.TruncateTable<UnitIdentity01>();
         }
 
         public class UnitGuid123