Unit test for client module

This patch adds unit test for the client module.

Change-Id: Id6d03800bb082a48f1586fa75185c9ddb696a49b

senlinclient/tests/unit/test_client.py

@@ -0,0 +1,39 @@
+# 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 testtools
+
+from senlinclient import client as sc
+from senlinclient.common import utils
+
+
+class FakeClient(object):
+
+    def __init__(self, session):
+        super(FakeClient, self).__init__()
+        self.session = session
+
+
+class ClientTest(testtools.TestCase):
+
+    @mock.patch.object(utils, 'import_versioned_module')
+    def test_client_init(self, mock_import):
+        the_module = mock.Mock()
+        the_module.Client = FakeClient
+        mock_import.return_value = the_module
+        session = mock.Mock()
+
+        res = sc.Client('FAKE_VER', session)
+
+        mock_import.assert_called_once_with('FAKE_VER', 'client')
+        self.assertIsInstance(res, FakeClient)