add tests of hardware module

teeth_agent/tests/hardware.py

@@ -0,0 +1,36 @@
+"""
+Copyright 2013 Rackspace, 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,
+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.
+"""
+
+import mock
+import unittest
+
+from teeth_agent import hardware
+
+
+class TestBaseTeethAgent(unittest.TestCase):
+    def setUp(self):
+        self.hardware = hardware.HardwareInspector()
+
+    @mock.patch('__builtin__.open')
+    def test_decom_mode(self, mocked_open):
+        f = mocked_open.return_value
+        f.read.return_value = '00:0c:29:8c:11:b1\n'
+
+        mac_addr = self.hardware.get_primary_mac_address()
+        self.assertEqual(mac_addr, '00:0c:29:8c:11:b1')
+
+        mocked_open.assert_called_once_with('/sys/class/net/eth0/address', 'r')
+        f.read.assert_called_once_with()