Add unit test

Src/Asp.NetCore2/SqlSeverTest/UnitTest/Main.cs

@@ -1,4 +1,5 @@
-using SqlSugar;
+using SqlSeverTest.UnitTest;
+using SqlSugar;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -30,6 +31,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            UnitBulkMerge.Init();
             UnitBool.Init();
             UnitGridSave.Init();
             UnitNavDynamic.Init();

Src/Asp.NetCore2/SqlSeverTest/UnitTest/UnitBulkMerge.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using OrmTest;
+
+namespace SqlSeverTest.UnitTest
+{
+    internal class UnitBulkMerge
+    {
+        public static void Init()
+        {
+            var db = NewUnitTest.Db;
+            db.CodeFirst.InitTables<UnitaafdsTest>();
+            db.DbMaintenance.TruncateTable<UnitaafdsTest>();
+            var count = db.Fastest<UnitaafdsTest>()
+                .BulkMerge(new List<UnitaafdsTest>() { new UnitaafdsTest() { Id=Guid.NewGuid()
+                , CreateTime=DateTime.Now, Name="a"} });
+            var list = db.Queryable<UnitaafdsTest>().ToList();
+            if (list[0].Name != "a") { throw new Exception("unit error"); }
+            list[0].Name = "j";
+            var count2 = db.Fastest<UnitaafdsTest>()
+             .BulkMerge(list);
+            var list2 = db.Queryable<UnitaafdsTest>().ToList();
+            if (list2[0].Name != "j" || count2 != 1) { throw new Exception("unit error"); }
+            list2.Add(new UnitaafdsTest()
+            {
+                Id = Guid.NewGuid(),
+                CreateTime = DateTime.Now,
+                Name = "a"
+            });
+            list2.Add(new UnitaafdsTest()
+            {
+                Id = Guid.NewGuid(),
+                CreateTime = DateTime.Now,
+                Name = "a"
+            });
+            db.Fastest<UnitaafdsTest>()
+                .BulkMerge(list2);
+            var count3 = db.Queryable<UnitaafdsTest>()
+            .Count();
+            if (count3 != 3)
+            {
+                throw new Exception("unit error");
+            }
+            for (int i = 0; i < 1000; i++)
+            {
+                db.Fastest<UnitaafdsTest>()
+               .BulkMerge(list);
+            }
+        }
+    }
+    public class UnitaafdsTest
+    {
+        [SqlSugar.SugarColumn(IsPrimaryKey = true)]
+        public Guid Id { get; set; }
+        public string Name { get; set; }
+        public DateTime CreateTime { get; set; }
+    }
+}