Rewrite simple test (only grpc output)

vendor/github.com/huandu/xstrings/util_test.go

@@ -0,0 +1,33 @@
+// Copyright 2015 Huan Du. All rights reserved.
+// Licensed under the MIT license that can be found in the LICENSE file.
+
+package xstrings
+
+import (
+	"strings"
+	"testing"
+)
+
+type _M map[string]string
+
+const (
+	separator = " ¶ "
+)
+
+func runTestCases(t *testing.T, converter func(string) string, cases map[string]string) {
+	for k, v := range cases {
+		s := converter(k)
+
+		if s != v {
+			t.Fatalf("case fails. [case:%v]\nshould => %#v\nactual => %#v", k, v, s)
+		}
+	}
+}
+
+func sep(strs ...string) string {
+	return strings.Join(strs, separator)
+}
+
+func split(str string) []string {
+	return strings.Split(str, separator)
+}