1 files changed, 52 insertions, 0 deletions
diff --git a/tests/test_envmon.py b/tests/test_envmon.py
new file mode 100644
index 0000000..74b61ee
--- /dev/null
+++ b/tests/test_envmon.py
@@ -0,0 +1,52 @@
+# Copyright 2014 Microsoft Corporation
+#
+# 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.
+#
+# Requires Python 2.4+ and Openssl 1.0+
+#
+# Implements parts of RFC 2131, 1541, 1497 and
+# http://msdn.microsoft.com/en-us/library/cc227282%28PROT.10%29.aspx
+# http://msdn.microsoft.com/en-us/library/cc227259%28PROT.13%29.aspx
+
+import tests.env
+from tests.tools import *
+import unittest
+import time
+from azurelinuxagent.future import text
+from azurelinuxagent.utils.osutil import OSUTIL
+from azurelinuxagent.distro.default.env import EnvMonitor
+
+class MockDhcpHandler(object):
+    def conf_routes(self):
+        pass
+
+def mock_get_dhcp_pid():
+    return "1234"
+
+def mock_dhcp_pid_change():
+    return text(time.time())
+
+class TestEnvMonitor(unittest.TestCase):
+
+    @mock(OSUTIL, 'get_dhcp_pid', mock_get_dhcp_pid)
+    def test_dhcp_pid_not_change(self):
+        monitor = EnvMonitor(MockDhcpHandler())
+        monitor.handle_dhclient_restart()
+
+    @mock(OSUTIL, 'get_dhcp_pid', mock_dhcp_pid_change)
+    def test_dhcp_pid_change(self):
+        monitor = EnvMonitor(MockDhcpHandler())
+        monitor.handle_dhclient_restart()
+
+if __name__ == '__main__':
+    unittest.main()