Add user test case

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

@@ -31,6 +31,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            UnitTest.Init();
             Unitdfasfasfa.Init();
             UnitAddRemark.Init();
             UnitSplitTask.Init();

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

@@ -0,0 +1,54 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{
+    internal class UnitTest
+    {
+        public static void Init()
+        {
+            var db = NewUnitTest.Db;
+            db.CodeFirst.SetStringDefaultLength(200)
+                .SplitTables()
+                .InitTables(typeof(tb_test));
+            db.Insertable(new tb_test
+            {
+                Key = "123"
+            })
+        .SplitTable()
+        .ExecuteCommand();
+ 
+
+           var rows=db.Updateable(new tb_test
+            {
+               Id=Guid.NewGuid(),
+                Key = "123",
+                Value = "901"
+            })
+                .WhereColumns(c => c.Key)
+                .UpdateColumns(c => c.Value)
+                .SplitTable()
+                .ExecuteCommand();
+            if (rows == 0) 
+            {
+                throw new Exception("unit error");
+            }
+        }
+    }
+    [SplitTable(SplitType.Day)]  //需要这里取消并InitTables时不用SplitTables()，SetStringDefaultLength才会生效
+    [SugarTable("tb_test_{year}{month}{day}")]
+    public class tb_test
+    {
+        [SugarColumn(IsPrimaryKey = true)]
+        public Guid Id { get; set; }
+
+        public string Key { get; set; }
+        [SugarColumn(IsNullable = true)]
+        public string Value { get; set; }
+    }
+}