Add unit test

Src/Asp.Net/SqlServerTest/UnitTest/UCustom20.cs

@@ -11,14 +11,41 @@ namespace OrmTest
         public static void Init() 
         {
             var db = NewUnitTest.Db;
-            var list = db.Queryable<Order>()
+            db.DbMaintenance.TruncateTable<Order>();
+            db.Insertable(new Order() { Id = 1, Name = "jack", CreateTime = DateTime.Now, CustomId = 1 }).ExecuteCommand();
+           var test1= db.Queryable<Order>()
+                .ToList(z => new {
+                    name1 = new { z.Id, z.Name , ZId=100 }
+                }).First();
+
+            if (test1.name1.Id != 1 || test1.name1.Name != "jack" || test1.name1.ZId != 100) 
+            {
+                throw new Exception("unit error");
+            }
+
+            var test2 = db.Queryable<Order>()
+           .ToList(z => new {
+               name1 = new { z.Id, z.Name, ZId = z.Id.ToString() }
+           }).First();
+
+            if (test2.name1.Id != 1 || test2.name1.Name != "jack" || test2.name1.ZId != "1")
+            {
+                throw new Exception("unit error");
+            }
+
+            var test3 = db.Queryable<Order>()
             .Take(2)
              .Select(i => new TestDTO
              {
-                 SubOne = new TestSubDTO { NameOne = i.Name, NameTwo = i.Name },
+                 SubOne = new TestSubDTO { NameOne = "a1", NameTwo = i.Id.ToString() },
-                 SubTwo = new TestSubDTO { NameOne = i.Name, NameTwo = i.Name }
+              //   SubTwo = new TestSubDTO { NameOne = i.Name, NameTwo = i.Name }
              })
-             .ToList();
+             .First();
+
+            if (test3.SubOne.NameOne !="a1"|| test3.SubOne.NameTwo != "1")
+            {
+                throw new Exception("unit error");
+            }
         }
 
         public class TestDTO