add test for tablename (go-xorm#885)

Author: lunny

engine_table_test.go

@@ -0,0 +1,28 @@
+// Copyright 2018 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"
+)
+
+type MCC struct {
+	ID          int64  `xorm:"pk 'id'"`
+	Code        string `xorm:"'code'"`
+	Description string `xorm:"'description'"`
+}
+
+func (mcc *MCC) TableName() string {
+	return "mcc"
+}
+
+func TestTableName1(t *testing.T) {
+	assert.NoError(t, prepareEngine())
+
+	assert.EqualValues(t, "mcc", testEngine.TableName(new(MCC)))
+	assert.EqualValues(t, "mcc", testEngine.TableName("mcc"))
+}