diff --git a/freezerclient/tests/unit/v2/test_client_clients.py b/freezerclient/tests/unit/v2/test_client_clients.py
new file mode 100644
index 0000000..4bea1ac
--- /dev/null
+++ b/freezerclient/tests/unit/v2/test_client_clients.py
@@ -0,0 +1,118 @@
+# (c) Copyright 2018 ZTE 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.
+
+import unittest
+
+import mock
+
+from freezerclient import exceptions
+from freezerclient.v2.managers import clients
+
+
+class TestClientManager(unittest.TestCase):
+    def setUp(self):
+        self.mock_client = mock.Mock()
+        self.mock_client.endpoint = 'http://testendpoint:9999'
+        self.mock_client.project_id = 'tecs'
+        self.mock_client.auth_token = 'testtoken'
+        self.r = clients.ClientManager(self.mock_client)
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_create(self, mock_requests):
+        self.assertEqual('http://testendpoint:9999/v2/tecs/clients/',
+                         self.r.endpoint)
+        self.assertEqual({'X-Auth-Token': 'testtoken',
+                          'Content-Type': 'application/json',
+                          'Accept': 'application/json'},
+                         self.r.headers)
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_create_ok(self, mock_requests):
+        mock_response = mock.Mock()
+        mock_response.status_code = 201
+        mock_response.json.return_value = {'client_id': 'qwerqwer'}
+        mock_requests.post.return_value = mock_response
+        retval = self.r.create(client_info={'client': 'metadata'})
+        self.assertEqual('qwerqwer', retval)
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_create_fail_when_api_return_error_code(self, mock_requests):
+        mock_response = mock.Mock()
+        mock_response.status_code = 500
+        mock_requests.post.return_value = mock_response
+        self.assertRaises(exceptions.ApiClientException, self.r.create,
+                          {'client': 'metadata'})
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_delete_ok(self, mock_requests):
+        mock_response = mock.Mock()
+        mock_response.status_code = 204
+        mock_requests.delete.return_value = mock_response
+        retval = self.r.delete('test_client_id')
+        self.assertIsNone(retval)
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_delete_fail(self, mock_requests):
+        mock_response = mock.Mock()
+        mock_response.status_code = 500
+        mock_requests.delete.return_value = mock_response
+        self.assertRaises(exceptions.ApiClientException, self.r.delete,
+                          'test_client_id')
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_get_ok(self, mock_requests):
+        mock_response = mock.Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {'client_id': 'qwerqwer'}
+        mock_requests.get.return_value = mock_response
+        retval = self.r.get('test_client_id')
+        self.assertEqual({'client_id': 'qwerqwer'}, retval)
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_get_none(self, mock_requests):
+        mock_response = mock.Mock()
+        mock_response.status_code = 404
+        mock_requests.get.return_value = mock_response
+        retval = self.r.get('test_client_id')
+        self.assertIsNone(retval)
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_get_raises_ApiClientException_on_error_not_404(self,
+                                                            mock_requests):
+        mock_response = mock.Mock()
+        mock_response.status_code = 500
+        mock_requests.get.return_value = mock_response
+        self.assertRaises(exceptions.ApiClientException, self.r.get,
+                          'test_client_id')
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_list_ok(self, mock_requests):
+        mock_response = mock.Mock()
+        mock_response.status_code = 200
+        client_list = [{'client_id_0': 'qwerqwer'},
+                       {'client_id_1': 'asdfasdf'}]
+        mock_response.json.return_value = {'clients': client_list}
+        mock_requests.get.return_value = mock_response
+        retval = self.r.list()
+        self.assertEqual(client_list, retval)
+
+    @mock.patch('freezerclient.v2.managers.clients.requests')
+    def test_list_error(self, mock_requests):
+        mock_response = mock.Mock()
+        mock_response.status_code = 404
+        client_list = [{'client_id_0': 'qwerqwer'},
+                       {'client_id_1': 'asdfasdf'}]
+        mock_response.json.return_value = {'clients': client_list}
+        mock_requests.get.return_value = mock_response
+        self.assertRaises(exceptions.ApiClientException, self.r.list)