Update mysql bytes empty

Src/Asp.NetCore2/MySqlTest/UserTestCases/UnitTest/UnitBytesEmpty.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{
+    internal class UnitBytesEmpty
+    {
+        public static void Init() 
+        {
+            var db = NewUnitTest.Db;
+            db.CodeFirst.InitTables<Unitadfasfa2>();
+            db.Insertable(new Unitadfasfa2() { bytes = new byte[] { } }).ExecuteCommand();
+            var xxx=db.Queryable<Unitadfasfa2>().ToList();
+            if (xxx.First().bytes.Length != 0) 
+            {
+                throw new Exception("unit error");
+            }
+        }
+        public class Unitadfasfa2 
+        {
+            public byte[] bytes { get; set; }
+        }
+    }
+}