*: Fix issue 393

See: https://github.com/pingcap/tidb/issues/393

util/stringutil/string_util_test.go

@@ -0,0 +1,47 @@
+// Copyright 2015 PingCAP, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package stringutil
+
+import (
+	"testing"
+
+	. "github.com/pingcap/check"
+)
+
+func TestT(t *testing.T) {
+	TestingT(t)
+}
+
+var _ = Suite(&testStringUtilSuite{})
+
+type testStringUtilSuite struct {
+}
+
+func (s *testStringUtilSuite) TestRemoveUselessBackslash(c *C) {
+	table := []struct {
+		str    string
+		expect string
+	}{
+		{"xxxx", "xxxx"},
+		{`\x01`, `x01`},
+		{`\b01`, `\b01`},
+		{`\B01`, `B01`},
+		{`'\'a\''`, `'\'a\''`},
+	}
+
+	for _, t := range table {
+		x := RemoveUselessBackslash(t.str)
+		c.Assert(x, Equals, t.expect)
+	}
+}