Replace third party mock

... by the builtin unittest.mock module, to reduce external
dependencies.

Change-Id: Id29822674672cd1a1231fcb627722c3949be2682

test-requirements.txt

@@ -1,6 +1,5 @@
 # Test cases requirements
 
-mock>=3.0.5                    # BSD
 pytest>=7.2.0                  # MIT
 pytest-html>=4.1.1             # MIT
 pytest-xdist[psutil]>=3.5.0    # MIT

tobiko/tests/unit/_patch.py

@@ -14,8 +14,7 @@
 from __future__ import absolute_import
 
 import time
-
+from unittest import mock
-import mock
 
 import tobiko
 from tobiko import common

tobiko/tests/unit/openstack/_case.py

@@ -14,7 +14,7 @@
 #    under the License.
 from __future__ import absolute_import
 
-import mock
+from unittest import mock
 
 from tobiko.tests.unit.openstack import _keystone
 from tobiko.tests import unit

tobiko/tests/unit/openstack/heat/test_client.py

@@ -13,8 +13,9 @@
 #    under the License.
 from __future__ import absolute_import
 
+from unittest import mock
+
 from heatclient.v1 import client as heatclient
-import mock
 
 from tobiko.openstack import keystone
 from tobiko.openstack import heat

tobiko/tests/unit/openstack/heat/test_stack.py

@@ -15,10 +15,10 @@ from __future__ import absolute_import
 
 from collections import abc
 import time
+from unittest import mock
 
 from heatclient.v1 import client as heatclient
 from heatclient import exc
-import mock
 
 import tobiko
 from tobiko.openstack import heat

tobiko/tests/unit/openstack/keystone/test_session.py

@@ -14,8 +14,9 @@
 #    under the License.
 from __future__ import absolute_import
 
+from unittest import mock
+
 from keystoneauth1 import session as keystonesession
-import mock
 
 from tobiko.openstack import keystone
 from tobiko.tests.unit import openstack

tobiko/tests/unit/openstack/octavia/test_client.py

@@ -14,9 +14,9 @@
 from __future__ import absolute_import
 
 import inspect
+from unittest import mock
 
 from keystoneclient.v3 import endpoints
-import mock
 from octaviaclient.api.v2 import octavia as octaviaclient
 
 from tobiko.openstack import keystone

tobiko/tests/unit/openstack/test_client.py

@@ -15,9 +15,9 @@
 from __future__ import absolute_import
 
 import inspect
+from unittest import mock
 
 from keystoneauth1 import session as _session
-import mock
 
 import tobiko
 from tobiko.openstack import _client

tobiko/tests/unit/openstack/tests/test_neutron.py

@@ -14,7 +14,7 @@
 #    under the License.
 from __future__ import absolute_import
 
-import mock
+from unittest import mock
 
 from tobiko.openstack import tests
 from tobiko.tests.unit import openstack

tobiko/tests/unit/shell/test_ssh.py

@@ -17,8 +17,8 @@ from __future__ import absolute_import
 
 import io
 import os
+from unittest import mock
 
-import mock
 import paramiko
 
 import tobiko

tobiko/tests/unit/test_config.py

@@ -15,8 +15,7 @@
 from __future__ import absolute_import
 
 import os
-
+from unittest import mock
-import mock
 
 from tobiko.tests import unit
 from tobiko import config

tobiko/tests/unit/test_conftest.py

@@ -13,8 +13,9 @@
 #    under the License.
 from __future__ import absolute_import
 
+from unittest import mock
+
 from oslo_log import log
-import mock
 
 import tobiko
 from tobiko.tests import unit

tobiko/tests/unit/test_fixture.py

@@ -16,9 +16,9 @@ from __future__ import absolute_import
 import os
 import sys
 import unittest
+from unittest import mock
 
 import fixtures
-import mock
 import testtools
 from testtools import content
 

tobiko/tests/unit/test_retry.py

@@ -14,8 +14,8 @@
 from __future__ import absolute_import
 
 import itertools
+from unittest import mock
 
-import mock
 import testtools
 
 import tobiko

tobiko/tests/unit/test_time.py

@@ -13,7 +13,7 @@
 #    under the License.
 from __future__ import absolute_import
 
-import mock
+from unittest import mock
 
 import tobiko
 from tobiko.tests import unit