Use unittest.mock instead of third party mock

Now that we no longer support py27, we can use the standard library
unittest.mock module instead of the third party mock lib.

Change-Id: I880d1d8d6183d002b81ac34e2f2a3b2625abb4ff

freezerclient/tests/unit/test_client.py

@@ -12,8 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
 import unittest
+from unittest import mock
 
 from freezerclient import client
 from freezerclient import v1

freezerclient/tests/unit/v1/test_client.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from keystoneauth1 import loading as kaloading
 

freezerclient/tests/unit/v1/test_client_actions.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from freezerclient import exceptions
 from freezerclient.v1.managers import actions

freezerclient/tests/unit/v1/test_client_backups.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from freezerclient import exceptions
 from freezerclient.v1.managers import backups

freezerclient/tests/unit/v1/test_client_clients.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from freezerclient import exceptions
 from freezerclient.v1.managers import clients

freezerclient/tests/unit/v1/test_client_jobs.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from oslo_serialization import jsonutils as json
 

freezerclient/tests/unit/v1/test_client_sessions.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from oslo_serialization import jsonutils as json
 

freezerclient/tests/unit/v2/test_client.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from keystoneauth1 import loading as kaloading
 

freezerclient/tests/unit/v2/test_client_actions.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from freezerclient import exceptions
 from freezerclient.v2.managers import actions

freezerclient/tests/unit/v2/test_client_backups.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from freezerclient import exceptions
 from freezerclient.v2.managers import backups

freezerclient/tests/unit/v2/test_client_clients.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from freezerclient import exceptions
 from freezerclient.v2.managers import clients

freezerclient/tests/unit/v2/test_client_jobs.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from oslo_serialization import jsonutils as json
 

freezerclient/tests/unit/v2/test_client_sessions.py

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 import unittest
-
-import mock
+from unittest import mock
 
 from oslo_serialization import jsonutils as json
 

lower-constraints.txt

@@ -16,7 +16,6 @@ keystoneauth1==3.4.0
 linecache2==1.0.0
 logilab-common==1.4.1
 MarkupSafe==1.0
-mock==2.0.0
 monotonic==0.6
 netaddr==0.7.18
 netifaces==0.10.4

test-requirements.txt

@@ -6,7 +6,6 @@
 hacking>=3.0,<3.1.0 # Apache-2.0
 
 coverage!=4.4,>=4.0 # Apache-2.0
-mock>=2.0.0 # BSD
 stestr>=2.0.0 # Apache-2.0
 testtools>=2.2.0 # MIT
 astroid==2.1.0 # LGPLv2.1