diff --git a/session_sum_test.go b/session_sum_test.go
index 5cfd7283..59e0f3cd 100644
--- a/session_sum_test.go
+++ b/session_sum_test.go
@@ -17,6 +17,8 @@ func isFloatEq(i, j float64, precision int) bool {
 }
 
 func TestSum(t *testing.T) {
+	assert.NoError(t, prepareEngine())
+
 	type SumStruct struct {
 		Int   int
 		Float float32
diff --git a/session_update_test.go b/session_update_test.go
new file mode 100644
index 00000000..eb1b79df
--- /dev/null
+++ b/session_update_test.go
@@ -0,0 +1,36 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xorm
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUpdateMap(t *testing.T) {
+	assert.NoError(t, prepareEngine())
+
+	type UpdateTable struct {
+		Id   int64
+		Name string
+		Age  int
+	}
+
+	assert.NoError(t, testEngine.Sync2(new(UpdateTable)))
+	var tb = UpdateTable{
+		Name: "test",
+		Age:  35,
+	}
+	_, err := testEngine.Insert(&tb)
+	assert.NoError(t, err)
+
+	cnt, err := testEngine.Table("update_table").Where("id = ?", tb.Id).Update(map[string]interface{}{
+		"name": "test2",
+		"age":  36,
+	})
+	assert.NoError(t, err)
+	assert.EqualValues(t, 1, cnt)
+}