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: Ia6c5910a2e37d5f53e194f4cefdf57dae4dde5b2
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

mistralclient/tests/unit/base.py

@@ -12,7 +12,8 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
+
 from oslotest import base
 from requests_mock.contrib import fixture
 

mistralclient/tests/unit/test_client.py

@@ -15,8 +15,8 @@
 
 import os
 import tempfile
+from unittest import mock
 
-import mock
 from oslo_serialization import jsonutils
 from oslo_utils import uuidutils
 from oslotest import base

mistralclient/tests/unit/test_httpclient.py

@@ -14,8 +14,8 @@
 
 import base64
 import copy
+from unittest import mock
 
-import mock
 from six.moves.urllib import parse as urlparse
 
 from oslo_utils import uuidutils

mistralclient/tests/unit/test_shell.py

@@ -12,7 +12,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 import mistralclient.tests.unit.base_shell_test as base
 

mistralclient/tests/unit/v2/base.py

@@ -13,7 +13,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 from mistralclient.api.v2 import client
 from mistralclient.tests.unit import base

mistralclient/tests/unit/v2/test_cli_action_execs.py

@@ -16,10 +16,10 @@
 
 import copy
 import sys
+from unittest import mock
 
 import six
 
-import mock
 
 from oslo_serialization import jsonutils
 

mistralclient/tests/unit/v2/test_cli_actions.py

@@ -15,7 +15,8 @@
 #    under the License.
 #
 
-import mock
+from unittest import mock
+
 import six
 
 from mistralclient.api.v2 import actions

mistralclient/tests/unit/v2/test_cli_cron_triggers.py

@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-import mock
+from unittest import mock
 
 from mistralclient.api.v2 import cron_triggers
 from mistralclient.commands.v2 import cron_triggers as cron_triggers_cmd

mistralclient/tests/unit/v2/test_cli_environments.py

@@ -16,10 +16,10 @@ import copy
 import datetime
 import os
 import tempfile
+from unittest import mock
 
 from oslo_serialization import jsonutils
 
-import mock
 import yaml
 
 from mistralclient.api.v2 import environments

mistralclient/tests/unit/v2/test_cli_event_triggers.py

@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-import mock
+from unittest import mock
 
 from mistralclient.api.v2 import event_triggers
 from mistralclient.commands.v2 import event_triggers as event_triggers_cmd

mistralclient/tests/unit/v2/test_cli_executions.py

@@ -16,8 +16,8 @@
 #    under the License.
 #
 
-import mock
 import pkg_resources as pkg
+from unittest import mock
 
 from oslo_serialization import jsonutils
 

mistralclient/tests/unit/v2/test_cli_members.py

@@ -12,7 +12,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 from mistralclient.api.v2 import members
 from mistralclient.commands.v2 import members as member_cmd

mistralclient/tests/unit/v2/test_cli_services.py

@@ -12,7 +12,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 from mistralclient.api.v2 import services
 from mistralclient.commands.v2 import services as service_cmd

mistralclient/tests/unit/v2/test_cli_tasks.py

@@ -15,9 +15,10 @@
 #    under the License.
 #
 
+from unittest import mock
+
 from oslo_serialization import jsonutils
 
-import mock
 
 from mistralclient.api.v2.executions import Execution
 from mistralclient.api.v2 import tasks

mistralclient/tests/unit/v2/test_cli_workbooks.py

@@ -13,7 +13,7 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
 
 from mistralclient.api.v2 import workbooks
 from mistralclient.commands.v2 import workbooks as workbook_cmd

mistralclient/tests/unit/v2/test_cli_workflows.py

@@ -13,7 +13,8 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-import mock
+from unittest import mock
+
 import six
 
 from mistralclient.api.v2 import workflows

test-requirements.txt

@@ -4,7 +4,6 @@
 coverage>=4.0 # Apache-2.0
 hacking>=1.1.0 # Apache-2.0
 python-openstackclient>=3.12.0 # Apache-2.0
-mock>=2.0.0 # BSD
 oslotest>=3.2.0 # Apache-2.0
 requests-mock>=1.2.0 # Apache-2.0
 tempest>=17.1.0 # Apache-2.0