[FAB-4069] Write unit tests for peer/version

This patch adds a test for the package peer/version.
Code coverage is 100%.

Change-Id: Iba6e4bb81314b3341ede23748a4d7ad02051dd3f
Signed-off-by: Yuki Kondo <[email protected]>

Author: yuki-kon

peer/version/version_test.go

@@ -0,0 +1,28 @@
+/*
+ Copyright Hitachi America, Ltd. 2017 All Rights Reserved.
+
+ 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,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+package version
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCmd(t *testing.T) {
+	cmd := Cmd()
+	assert.NoError(t, cmd.Execute(), "expected version command to succeed")
+}