VOL-3705 Create option in kafka-topic-export to report ONU serial no in metrics in Hex format instead of ASCII chars

Change-Id: Id54f729efe4f9fee2accb3b18e97328b5e5db1ca
diff --git a/utils/utils_test.go b/utils/utils_test.go
new file mode 100644
index 0000000..5ea84f4
--- /dev/null
+++ b/utils/utils_test.go
@@ -0,0 +1,51 @@
+// Copyright 2018 Open Networking Foundation
+//
+// 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 utils gives type conversion helpers
+
+
+package utils
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestGetOnuSN(t *testing.T) {
+	testCases := []struct {
+		hexFlag        bool
+		input          string
+		expectedOutput string
+		expectedError  string
+	}{
+		{
+			hexFlag:        true,
+			input:          "SCOM00001B6D",
+			expectedOutput: "53434F4D00001B6D",
+		},
+
+		{
+			hexFlag:       false,
+			input:         "SCO00001B6D",
+			expectedOutput: "SCO00001B6D",
+		},
+	}
+
+	for _, testCase := range testCases {
+		OnuSNhex = testCase.hexFlag
+		hexFormat := GetOnuSN(testCase.input)
+		assert.Equal(t, testCase.expectedOutput, hexFormat)
+	}
+}
+
+