Add unitest for restclient PoolManager and http proxy

Author: Sergi Almacellas Abellana

rest_test.py

@@ -0,0 +1,42 @@
+# Copyright 2017 The Kubernetes Authors.
+#
+# 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 unittest
+import urllib3
+
+from mock import patch
+
+from kubernetes.client import Configuration
+from kubernetes.client.rest import RESTClientObject
+
+
+class RestTest(unittest.TestCase):
+
+    def test_poolmanager(self):
+        'Test that a poolmanager is created for rest client'
+        with patch.object(urllib3, 'PoolManager') as pool:
+            RESTClientObject(config=Configuration())
+            pool.assert_called_once()
+
+    def test_proxy(self):
+        'Test that proxy is created when the config especifies it'
+        config = Configuration()
+        config.http_proxy_url = 'http://proxy.example.com'
+
+        with patch.object(urllib3, 'proxy_from_url') as proxy:
+            RESTClientObject(config=config)
+            proxy.assert_called_once()
+
+
+if __name__ == '__main__':
+    unittest.main()