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: I2de669d8e89b8daeb7ee5405ffab35af6307c40b

72 files changed, 103 insertions, 101 deletions

diff --git a/horizon/test/unit/hacking/test_checks.py b/horizon/test/unit/hacking/test_checks.py
index 54484a05b..6d4c9b3a0 100644
--- a/horizon/test/unit/hacking/test_checks.py
+++ b/horizon/test/unit/hacking/test_checks.py
@@ -11,10 +11,10 @@
 #    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 textwrap
+from unittest import mock
+
 
-import mock
 import pycodestyle
 
 from horizon.hacking import checks
diff --git a/horizon/test/unit/management/commands/test_startdash.py b/horizon/test/unit/management/commands/test_startdash.py
index fc67d8d17..ead4265e6 100644
--- a/horizon/test/unit/management/commands/test_startdash.py
+++ b/horizon/test/unit/management/commands/test_startdash.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 django.core.management import call_command
 from django.core.management import CommandError
diff --git a/horizon/test/unit/management/commands/test_startpanel.py b/horizon/test/unit/management/commands/test_startpanel.py
index 27d8999f3..17769ce00 100644
--- a/horizon/test/unit/management/commands/test_startpanel.py
+++ b/horizon/test/unit/management/commands/test_startpanel.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 django.core.management import call_command
 from django.core.management import CommandError
diff --git a/horizon/test/unit/middleware/test_base.py b/horizon/test/unit/middleware/test_base.py
index 01f75ec82..8528f681d 100644
--- a/horizon/test/unit/middleware/test_base.py
+++ b/horizon/test/unit/middleware/test_base.py
@@ -14,8 +14,8 @@
 #    under the License.
 
 import datetime
+from unittest import mock
 
-import mock
 import pytz
 
 from django.conf import settings
diff --git a/horizon/test/unit/middleware/test_operation_log.py b/horizon/test/unit/middleware/test_operation_log.py
index 673ce63cd..117a2dcc9 100644
--- a/horizon/test/unit/middleware/test_operation_log.py
+++ b/horizon/test/unit/middleware/test_operation_log.py
@@ -13,8 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
-from mock import patch
+from unittest import mock
+from unittest.mock import patch
 
 from django.conf import settings
 from django.core.exceptions import MiddlewareNotUsed
diff --git a/horizon/test/unit/tables/test_tables.py b/horizon/test/unit/tables/test_tables.py
index 1bc03501a..d34c9af19 100644
--- a/horizon/test/unit/tables/test_tables.py
+++ b/horizon/test/unit/tables/test_tables.py
@@ -16,6 +16,7 @@
 #    under the License.
 
 import unittest
+from unittest import mock
 import uuid
 
 from django import forms
@@ -25,7 +26,6 @@ from django.template import defaultfilters
 from django.test.utils import override_settings
 from django.urls import reverse
 from django.utils.translation import ungettext_lazy
-import mock
 
 from horizon import exceptions
 from horizon import tables
diff --git a/horizon/test/unit/workflows/test_workflows.py b/horizon/test/unit/workflows/test_workflows.py
index 7df55c208..f4e455176 100644
--- a/horizon/test/unit/workflows/test_workflows.py
+++ b/horizon/test/unit/workflows/test_workflows.py
@@ -12,7 +12,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
 
 from django import forms
 from django import http
diff --git a/lower-constraints.txt b/lower-constraints.txt
index 529a3b5b9..67b5295f5 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -47,7 +47,6 @@ kombu==4.0.0
 linecache2==1.0.0
 MarkupSafe==1.0
 mccabe==0.2.1
-mock==2.0.0
 monotonic==0.6
 msgpack-python==0.4.0
 munch==2.1.0
diff --git a/openstack_auth/tests/unit/test_auth.py b/openstack_auth/tests/unit/test_auth.py
index 42d3a6137..6b52ed1e5 100644
--- a/openstack_auth/tests/unit/test_auth.py
+++ b/openstack_auth/tests/unit/test_auth.py
@@ -11,6 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from unittest import mock
 import uuid
 
 from django.conf import settings
@@ -23,7 +24,7 @@ from keystoneauth1.identity import v3 as v3_auth
 from keystoneauth1 import session
 from keystoneclient.v3 import client as client_v3
 from keystoneclient.v3 import projects
-import mock
+
 
 from openstack_auth.plugin import password
 from openstack_auth.tests import data_v3
diff --git a/openstack_auth/tests/unit/test_policy.py b/openstack_auth/tests/unit/test_policy.py
index 45a15ede7..fe8541cb0 100644
--- a/openstack_auth/tests/unit/test_policy.py
+++ b/openstack_auth/tests/unit/test_policy.py
@@ -11,9 +11,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from unittest import mock
+
 from django import http
 from django import test
-import mock
 
 from openstack_auth import policy
 from openstack_auth import user
diff --git a/openstack_auth/tests/unit/test_user.py b/openstack_auth/tests/unit/test_user.py
index 9ad14ea5a..0e8bd1758 100644
--- a/openstack_auth/tests/unit/test_user.py
+++ b/openstack_auth/tests/unit/test_user.py
@@ -11,8 +11,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from unittest import mock
+
 from django import test
-import mock
 
 from openstack_auth import user
 
diff --git a/openstack_dashboard/dashboards/admin/aggregates/tests.py b/openstack_dashboard/dashboards/admin/aggregates/tests.py
index 96881f7a9..3ed03ba57 100644
--- a/openstack_dashboard/dashboards/admin/aggregates/tests.py
+++ b/openstack_dashboard/dashboards/admin/aggregates/tests.py
@@ -10,7 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
 
 from django.urls import reverse
 from django.utils import html
diff --git a/openstack_dashboard/dashboards/admin/defaults/tests.py b/openstack_dashboard/dashboards/admin/defaults/tests.py
index 83ebbc3b3..259f8106f 100644
--- a/openstack_dashboard/dashboards/admin/defaults/tests.py
+++ b/openstack_dashboard/dashboards/admin/defaults/tests.py
@@ -12,9 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/admin/flavors/tests.py b/openstack_dashboard/dashboards/admin/flavors/tests.py
index 47e7bbbe0..07ddef47b 100644
--- a/openstack_dashboard/dashboards/admin/flavors/tests.py
+++ b/openstack_dashboard/dashboards/admin/flavors/tests.py
@@ -10,10 +10,11 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from unittest import mock
+
 import django
 from django.conf import settings
 from django.urls import reverse
-import mock
 from novaclient.v2 import flavors
 
 from openstack_dashboard import api
diff --git a/openstack_dashboard/dashboards/admin/hypervisors/tests.py b/openstack_dashboard/dashboards/admin/hypervisors/tests.py
index 5d21a9042..be8af4a51 100644
--- a/openstack_dashboard/dashboards/admin/hypervisors/tests.py
+++ b/openstack_dashboard/dashboards/admin/hypervisors/tests.py
@@ -12,9 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/admin/images/tests.py b/openstack_dashboard/dashboards/admin/images/tests.py
index a75ba4d72..5d5fe2a12 100644
--- a/openstack_dashboard/dashboards/admin/images/tests.py
+++ b/openstack_dashboard/dashboards/admin/images/tests.py
@@ -12,12 +12,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 from django.conf import settings
 from django.test.utils import override_settings
 from django.urls import reverse
 
-import mock
-
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
 
diff --git a/openstack_dashboard/dashboards/admin/info/tests.py b/openstack_dashboard/dashboards/admin/info/tests.py
index fa46da271..fed5d001c 100644
--- a/openstack_dashboard/dashboards/admin/info/tests.py
+++ b/openstack_dashboard/dashboards/admin/info/tests.py
@@ -12,7 +12,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
 
 from django.urls import reverse
 
diff --git a/openstack_dashboard/dashboards/admin/instances/tests.py b/openstack_dashboard/dashboards/admin/instances/tests.py
index 4f331093e..57b858265 100644
--- a/openstack_dashboard/dashboards/admin/instances/tests.py
+++ b/openstack_dashboard/dashboards/admin/instances/tests.py
@@ -13,11 +13,9 @@
 #    under the License.
 
 from collections import OrderedDict
-
+from unittest import mock
 import uuid
 
-import mock
-
 from django.conf import settings
 from django.test import override_settings
 from django.urls import reverse
diff --git a/openstack_dashboard/dashboards/admin/metadata_defs/tests.py b/openstack_dashboard/dashboards/admin/metadata_defs/tests.py
index 31b216b67..bcc1ac397 100644
--- a/openstack_dashboard/dashboards/admin/metadata_defs/tests.py
+++ b/openstack_dashboard/dashboards/admin/metadata_defs/tests.py
@@ -15,11 +15,10 @@
 
 
 import json
+from unittest import mock
 
 from django.urls import reverse
 
-import mock
-
 from openstack_dashboard import api
 from openstack_dashboard.dashboards.admin.metadata_defs \
     import constants
diff --git a/openstack_dashboard/dashboards/admin/networks/agents/tests.py b/openstack_dashboard/dashboards/admin/networks/agents/tests.py
index 78d19396a..74100abff 100644
--- a/openstack_dashboard/dashboards/admin/networks/agents/tests.py
+++ b/openstack_dashboard/dashboards/admin/networks/agents/tests.py
@@ -13,9 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/admin/networks/ports/tests.py b/openstack_dashboard/dashboards/admin/networks/ports/tests.py
index 57676f18f..7ff7cc942 100644
--- a/openstack_dashboard/dashboards/admin/networks/ports/tests.py
+++ b/openstack_dashboard/dashboards/admin/networks/ports/tests.py
@@ -14,12 +14,11 @@
 #    under the License.
 
 import collections
+from unittest import mock
 
 from django.test.utils import override_settings
 from django.urls import reverse
 
-import mock
-
 from horizon.workflows import views
 
 from openstack_dashboard import api
diff --git a/openstack_dashboard/dashboards/admin/networks/subnets/tests.py b/openstack_dashboard/dashboards/admin/networks/subnets/tests.py
index b95d42feb..155054356 100644
--- a/openstack_dashboard/dashboards/admin/networks/subnets/tests.py
+++ b/openstack_dashboard/dashboards/admin/networks/subnets/tests.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 import collections
+from unittest import mock
 
 from django.urls import reverse
-import mock
 
 from horizon.workflows import views
 
diff --git a/openstack_dashboard/dashboards/admin/networks/tests.py b/openstack_dashboard/dashboards/admin/networks/tests.py
index b6f919d87..de9be31cd 100644
--- a/openstack_dashboard/dashboards/admin/networks/tests.py
+++ b/openstack_dashboard/dashboards/admin/networks/tests.py
@@ -13,12 +13,11 @@
 #    under the License.
 
 import collections
+from unittest import mock
 
 from django.urls import reverse
 from django.utils.http import urlunquote
 
-import mock
-
 from horizon import forms
 
 from openstack_dashboard import api
diff --git a/openstack_dashboard/dashboards/admin/overview/tests.py b/openstack_dashboard/dashboards/admin/overview/tests.py
index e665f3ffa..a8dda841c 100644
--- a/openstack_dashboard/dashboards/admin/overview/tests.py
+++ b/openstack_dashboard/dashboards/admin/overview/tests.py
@@ -17,14 +17,13 @@
 #    under the License.
 
 import datetime
+from unittest import mock
 
 from django.test.utils import override_settings
 from django.urls import reverse
 from django.utils import encoding
 from django.utils import timezone
 
-import mock
-
 from horizon.templatetags import sizeformat
 
 from openstack_dashboard import api
diff --git a/openstack_dashboard/dashboards/admin/rbac_policies/tests.py b/openstack_dashboard/dashboards/admin/rbac_policies/tests.py
index 8858b7ac8..226e91b07 100644
--- a/openstack_dashboard/dashboards/admin/rbac_policies/tests.py
+++ b/openstack_dashboard/dashboards/admin/rbac_policies/tests.py
@@ -11,8 +11,10 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
+
+from unittest import mock
+
 from django.urls import reverse
-import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/admin/routers/tests.py b/openstack_dashboard/dashboards/admin/routers/tests.py
index 28c8dd273..f9718bc06 100644
--- a/openstack_dashboard/dashboards/admin/routers/tests.py
+++ b/openstack_dashboard/dashboards/admin/routers/tests.py
@@ -12,9 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from openstack_dashboard import api
 from openstack_dashboard.dashboards.project.routers import tests as r_test
diff --git a/openstack_dashboard/dashboards/admin/snapshots/tests.py b/openstack_dashboard/dashboards/admin/snapshots/tests.py
index 3403ac721..c1f7b8cf7 100644
--- a/openstack_dashboard/dashboards/admin/snapshots/tests.py
+++ b/openstack_dashboard/dashboards/admin/snapshots/tests.py
@@ -10,11 +10,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from unittest import mock
+
 from django.conf import settings
 from django.test.utils import override_settings
 from django.urls import reverse
 from django.utils.http import urlunquote
-import mock
 
 from openstack_dashboard.api import cinder
 from openstack_dashboard.api import keystone
diff --git a/openstack_dashboard/dashboards/admin/vg_snapshots/tests.py b/openstack_dashboard/dashboards/admin/vg_snapshots/tests.py
index 0e3614de7..5e4df7b72 100644
--- a/openstack_dashboard/dashboards/admin/vg_snapshots/tests.py
+++ b/openstack_dashboard/dashboards/admin/vg_snapshots/tests.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 from django.urls import reverse
-import mock
 
 from openstack_dashboard import api
 
diff --git a/openstack_dashboard/dashboards/admin/volume_groups/tests.py b/openstack_dashboard/dashboards/admin/volume_groups/tests.py
index 579ea9b86..8a0ea243d 100644
--- a/openstack_dashboard/dashboards/admin/volume_groups/tests.py
+++ b/openstack_dashboard/dashboards/admin/volume_groups/tests.py
@@ -12,9 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/admin/volume_types/qos_specs/tests.py b/openstack_dashboard/dashboards/admin/volume_types/qos_specs/tests.py
index ee4af64a6..4bc2ed717 100644
--- a/openstack_dashboard/dashboards/admin/volume_types/qos_specs/tests.py
+++ b/openstack_dashboard/dashboards/admin/volume_types/qos_specs/tests.py
@@ -10,9 +10,9 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from openstack_dashboard import api
 from openstack_dashboard.dashboards.admin.volume_types.qos_specs \
diff --git a/openstack_dashboard/dashboards/admin/volume_types/tests.py b/openstack_dashboard/dashboards/admin/volume_types/tests.py
index e2a44c562..fb6a734e2 100644
--- a/openstack_dashboard/dashboards/admin/volume_types/tests.py
+++ b/openstack_dashboard/dashboards/admin/volume_types/tests.py
@@ -10,8 +10,9 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from unittest import mock
+
 from django.urls import reverse
-import mock
 
 from horizon import exceptions
 
diff --git a/openstack_dashboard/dashboards/identity/application_credentials/tests.py b/openstack_dashboard/dashboards/identity/application_credentials/tests.py
index f5e0d5b58..496e6a2e9 100644
--- a/openstack_dashboard/dashboards/identity/application_credentials/tests.py
+++ b/openstack_dashboard/dashboards/identity/application_credentials/tests.py
@@ -12,7 +12,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
 
 from django.urls import reverse
 
diff --git a/openstack_dashboard/dashboards/identity/domains/tests.py b/openstack_dashboard/dashboards/identity/domains/tests.py
index 754d669a4..af9ae709f 100644
--- a/openstack_dashboard/dashboards/identity/domains/tests.py
+++ b/openstack_dashboard/dashboards/identity/domains/tests.py
@@ -12,9 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from horizon.workflows import views
 
diff --git a/openstack_dashboard/dashboards/identity/groups/tests.py b/openstack_dashboard/dashboards/identity/groups/tests.py
index 28ec1d20c..7ebf95794 100644
--- a/openstack_dashboard/dashboards/identity/groups/tests.py
+++ b/openstack_dashboard/dashboards/identity/groups/tests.py
@@ -12,9 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/identity/projects/tests.py b/openstack_dashboard/dashboards/identity/projects/tests.py
index 93ceac359..e284d82b5 100644
--- a/openstack_dashboard/dashboards/identity/projects/tests.py
+++ b/openstack_dashboard/dashboards/identity/projects/tests.py
@@ -14,14 +14,13 @@
 
 import datetime
 import logging
+from unittest import mock
 
 from django.test import tag
 from django.test.utils import override_settings
 from django.urls import reverse
 from django.utils import timezone
 
-import mock
-
 from horizon.workflows import views
 
 from openstack_dashboard import api
diff --git a/openstack_dashboard/dashboards/identity/roles/tests.py b/openstack_dashboard/dashboards/identity/roles/tests.py
index 16ed5356c..b24ec3985 100644
--- a/openstack_dashboard/dashboards/identity/roles/tests.py
+++ b/openstack_dashboard/dashboards/identity/roles/tests.py
@@ -12,9 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/identity/users/tests.py b/openstack_dashboard/dashboards/identity/users/tests.py
index 68fc2affe..2c1edd717 100644
--- a/openstack_dashboard/dashboards/identity/users/tests.py
+++ b/openstack_dashboard/dashboards/identity/users/tests.py
@@ -17,12 +17,11 @@
 #    under the License.
 
 from socket import timeout as socket_timeout
+from unittest import mock
 
 from django.test.utils import override_settings
 from django.urls import reverse
 
-import mock
-
 from openstack_dashboard import api
 from openstack_dashboard.dashboards.identity.users import tabs
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/project/floating_ips/tests.py b/openstack_dashboard/dashboards/project/floating_ips/tests.py
index 4664d11a1..d900b5c13 100644
--- a/openstack_dashboard/dashboards/project/floating_ips/tests.py
+++ b/openstack_dashboard/dashboards/project/floating_ips/tests.py
@@ -17,11 +17,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 from django.urls import reverse
 from django.utils.http import urlencode
 
-import mock
-
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
 from openstack_dashboard.usage import quotas
diff --git a/openstack_dashboard/dashboards/project/images/images/tests.py b/openstack_dashboard/dashboards/project/images/images/tests.py
index b450c596f..9cf1fa371 100644
--- a/openstack_dashboard/dashboards/project/images/images/tests.py
+++ b/openstack_dashboard/dashboards/project/images/images/tests.py
@@ -17,14 +17,13 @@
 #    under the License.
 
 import tempfile
+from unittest import mock
 
 from django.conf import settings
 from django.core.files.uploadedfile import InMemoryUploadedFile
 from django.test.utils import override_settings
 from django.urls import reverse
 
-import mock
-
 from horizon import tables as horizon_tables
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/project/images/snapshots/tests.py b/openstack_dashboard/dashboards/project/images/snapshots/tests.py
index 4e598d3ce..48d5d8fec 100644
--- a/openstack_dashboard/dashboards/project/images/snapshots/tests.py
+++ b/openstack_dashboard/dashboards/project/images/snapshots/tests.py
@@ -16,9 +16,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from django.urls import reverse
+from unittest import mock
 
-import mock
+from django.urls import reverse
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/project/images/tests.py b/openstack_dashboard/dashboards/project/images/tests.py
index 07413808f..5599ae0e6 100644
--- a/openstack_dashboard/dashboards/project/images/tests.py
+++ b/openstack_dashboard/dashboards/project/images/tests.py
@@ -21,11 +21,10 @@ import os
 from socket import timeout as socket_timeout
 import tempfile
 import unittest
+from unittest import mock
 
 from django.urls import reverse
 
-import mock
-
 from horizon import exceptions
 
 from openstack_dashboard import api
diff --git a/openstack_dashboard/dashboards/project/instances/tests.py b/openstack_dashboard/dashboards/project/instances/tests.py
index 7b9df1fbb..b7ef8cac8 100644
--- a/openstack_dashboard/dashboards/project/instances/tests.py
+++ b/openstack_dashboard/dashboards/project/instances/tests.py
@@ -20,6 +20,7 @@ import collections
 import json
 import logging
 import sys
+from unittest import mock
 
 from django.conf import settings
 from django.forms import widgets
@@ -28,7 +29,6 @@ import django.test
 from django.test.utils import override_settings
 from django.urls import reverse
 from django.utils.http import urlencode
-import mock
 from novaclient import api_versions
 
 from horizon import exceptions
diff --git a/openstack_dashboard/dashboards/project/key_pairs/tests.py b/openstack_dashboard/dashboards/project/key_pairs/tests.py
index 0f5ce7391..cbfdc5004 100644
--- a/openstack_dashboard/dashboards/project/key_pairs/tests.py
+++ b/openstack_dashboard/dashboards/project/key_pairs/tests.py
@@ -16,10 +16,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
 from urllib import parse
 
 from django.urls import reverse
-import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.dashboards.project.key_pairs.forms \
diff --git a/openstack_dashboard/dashboards/project/network_topology/tests.py b/openstack_dashboard/dashboards/project/network_topology/tests.py
index 5d5c50cac..ac7330ca1 100644
--- a/openstack_dashboard/dashboards/project/network_topology/tests.py
+++ b/openstack_dashboard/dashboards/project/network_topology/tests.py
@@ -12,10 +12,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 import django.test
 from django.urls import reverse
 
-import mock
 from oslo_serialization import jsonutils
 
 from openstack_dashboard import api
diff --git a/openstack_dashboard/dashboards/project/networks/ports/tests.py b/openstack_dashboard/dashboards/project/networks/ports/tests.py
index 4bcb07779..61bc3f484 100644
--- a/openstack_dashboard/dashboards/project/networks/ports/tests.py
+++ b/openstack_dashboard/dashboards/project/networks/ports/tests.py
@@ -15,12 +15,11 @@
 
 import collections
 import copy
+from unittest import mock
 
 from django.test.utils import override_settings
 from django.urls import reverse
 
-import mock
-
 from openstack_auth import utils as auth_utils
 
 from horizon.workflows import views
diff --git a/openstack_dashboard/dashboards/project/networks/subnets/tests.py b/openstack_dashboard/dashboards/project/networks/subnets/tests.py
index 598a3c091..d8f6f25af 100644
--- a/openstack_dashboard/dashboards/project/networks/subnets/tests.py
+++ b/openstack_dashboard/dashboards/project/networks/subnets/tests.py
@@ -13,8 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 from django.urls import reverse
-import mock
 
 from horizon.workflows import views
 
diff --git a/openstack_dashboard/dashboards/project/networks/tests.py b/openstack_dashboard/dashboards/project/networks/tests.py
index 69db99346..227611792 100644
--- a/openstack_dashboard/dashboards/project/networks/tests.py
+++ b/openstack_dashboard/dashboards/project/networks/tests.py
@@ -13,11 +13,11 @@
 #    under the License.
 
 import collections
+from unittest import mock
 
 from django.urls import reverse
 from django.utils.html import escape
 from django.utils.http import urlunquote
-import mock
 
 from horizon.workflows import views
 
diff --git a/openstack_dashboard/dashboards/project/overview/tests.py b/openstack_dashboard/dashboards/project/overview/tests.py
index adfad843b..38bf36c8e 100644
--- a/openstack_dashboard/dashboards/project/overview/tests.py
+++ b/openstack_dashboard/dashboards/project/overview/tests.py
@@ -18,13 +18,12 @@
 
 import datetime
 import logging
+from unittest import mock
 
 from django.test.utils import override_settings
 from django.urls import reverse
 from django.utils import timezone
 
-import mock
-
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
 from openstack_dashboard import usage
diff --git a/openstack_dashboard/dashboards/project/routers/tests.py b/openstack_dashboard/dashboards/project/routers/tests.py
index 08374fa54..4a8b90c39 100644
--- a/openstack_dashboard/dashboards/project/routers/tests.py
+++ b/openstack_dashboard/dashboards/project/routers/tests.py
@@ -11,12 +11,12 @@
 #    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 copy
+from unittest import mock
 
 from django.urls import reverse
 
-import mock
-
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
 from openstack_dashboard.usage import quotas
diff --git a/openstack_dashboard/dashboards/project/security_groups/tests.py b/openstack_dashboard/dashboards/project/security_groups/tests.py
index 4351ff290..6290fc229 100644
--- a/openstack_dashboard/dashboards/project/security_groups/tests.py
+++ b/openstack_dashboard/dashboards/project/security_groups/tests.py
@@ -16,7 +16,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
+from unittest import mock
 
 from django.conf import settings
 from django.urls import reverse
diff --git a/openstack_dashboard/dashboards/project/snapshots/tests.py b/openstack_dashboard/dashboards/project/snapshots/tests.py
index 7a8b5dd4a..d2efc9f13 100644
--- a/openstack_dashboard/dashboards/project/snapshots/tests.py
+++ b/openstack_dashboard/dashboards/project/snapshots/tests.py
@@ -16,11 +16,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 from django.conf import settings
 from django.test.utils import override_settings
 from django.urls import reverse
 from django.utils.http import urlunquote
-import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.dashboards.project.snapshots \
diff --git a/openstack_dashboard/dashboards/project/vg_snapshots/tests.py b/openstack_dashboard/dashboards/project/vg_snapshots/tests.py
index a749de715..d66185335 100644
--- a/openstack_dashboard/dashboards/project/vg_snapshots/tests.py
+++ b/openstack_dashboard/dashboards/project/vg_snapshots/tests.py
@@ -10,8 +10,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 from django.urls import reverse
-import mock
 
 from openstack_dashboard.api import cinder
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/project/volume_groups/tests.py b/openstack_dashboard/dashboards/project/volume_groups/tests.py
index 3d799794f..e5caffd29 100644
--- a/openstack_dashboard/dashboards/project/volume_groups/tests.py
+++ b/openstack_dashboard/dashboards/project/volume_groups/tests.py
@@ -10,9 +10,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 from django.urls import reverse
 from django.utils.http import urlunquote
-import mock
 
 from openstack_dashboard.api import cinder
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/dashboards/project/volumes/tests.py b/openstack_dashboard/dashboards/project/volumes/tests.py
index 0c3c3c453..6d3e158a4 100644
--- a/openstack_dashboard/dashboards/project/volumes/tests.py
+++ b/openstack_dashboard/dashboards/project/volumes/tests.py
@@ -13,8 +13,7 @@
 #    under the License.
 
 import copy
-
-import mock
+from unittest import mock
 
 from django.conf import settings
 from django.forms import widgets
diff --git a/openstack_dashboard/dashboards/settings/password/tests.py b/openstack_dashboard/dashboards/settings/password/tests.py
index 78b235811..9d1d9e459 100644
--- a/openstack_dashboard/dashboards/settings/password/tests.py
+++ b/openstack_dashboard/dashboards/settings/password/tests.py
@@ -12,13 +12,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
 from urllib.parse import urlsplit
 
 from django.conf import settings
 from django import http
 from django.urls import reverse
 
-import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/test/helpers.py b/openstack_dashboard/test/helpers.py
index cc55d4530..1d0e3511e 100644
--- a/openstack_dashboard/test/helpers.py
+++ b/openstack_dashboard/test/helpers.py
@@ -21,6 +21,7 @@ import importlib
 import logging
 import os
 import traceback
+from unittest import mock
 
 from django.conf import settings
 from django.contrib.messages.storage import default_storage
@@ -30,7 +31,6 @@ from django.test import tag
 from django import urls
 from django.utils import http
 
-import mock
 from openstack_auth import user
 from openstack_auth import utils
 from requests.packages.urllib3.connection import HTTPConnection
diff --git a/openstack_dashboard/test/unit/api/rest/test_config.py b/openstack_dashboard/test/unit/api/rest/test_config.py
index 7ce7c9a04..c20054db5 100644
--- a/openstack_dashboard/test/unit/api/rest/test_config.py
+++ b/openstack_dashboard/test/unit/api/rest/test_config.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 openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/test/unit/api/rest/test_glance.py b/openstack_dashboard/test/unit/api/rest/test_glance.py
index 9bfe21397..ab5162289 100644
--- a/openstack_dashboard/test/unit/api/rest/test_glance.py
+++ b/openstack_dashboard/test/unit/api/rest/test_glance.py
@@ -12,7 +12,7 @@
 # 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
+from unittest import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.api.rest import glance
diff --git a/openstack_dashboard/test/unit/api/rest/test_keystone.py b/openstack_dashboard/test/unit/api/rest/test_keystone.py
index a462db494..aac2ca8d6 100644
--- a/openstack_dashboard/test/unit/api/rest/test_keystone.py
+++ b/openstack_dashboard/test/unit/api/rest/test_keystone.py
@@ -12,8 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from unittest import mock
+
 from django.conf import settings
-import mock
 from oslo_serialization import jsonutils
 
 from openstack_dashboard import api
diff --git a/openstack_dashboard/test/unit/api/rest/test_neutron.py b/openstack_dashboard/test/unit/api/rest/test_neutron.py
index 09e37208e..5c56eb7f2 100644
--- a/openstack_dashboard/test/unit/api/rest/test_neutron.py
+++ b/openstack_dashboard/test/unit/api/rest/test_neutron.py
@@ -13,8 +13,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from unittest import mock
+
 from django.http import request as django_request
-import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.api import base
diff --git a/openstack_dashboard/test/unit/api/rest/test_nova.py b/openstack_dashboard/test/unit/api/rest/test_nova.py
index 148880866..63156d040 100644
--- a/openstack_dashboard/test/unit/api/rest/test_nova.py
+++ b/openstack_dashboard/test/unit/api/rest/test_nova.py
@@ -14,10 +14,10 @@
 
 import json
 from json import loads as to_json
+from unittest import mock
 import uuid
 
 from django.conf import settings
-import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.api.base import Quota
diff --git a/openstack_dashboard/test/unit/api/rest/test_swift.py b/openstack_dashboard/test/unit/api/rest/test_swift.py
index 0d7512bf3..f6ac16f8e 100644
--- a/openstack_dashboard/test/unit/api/rest/test_swift.py
+++ b/openstack_dashboard/test/unit/api/rest/test_swift.py
@@ -11,7 +11,7 @@
 # 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
+from unittest import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.api.rest import swift
diff --git a/openstack_dashboard/test/unit/api/test_cinder.py b/openstack_dashboard/test/unit/api/test_cinder.py
index c25fd5614..769f29bed 100644
--- a/openstack_dashboard/test/unit/api/test_cinder.py
+++ b/openstack_dashboard/test/unit/api/test_cinder.py
@@ -12,11 +12,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 from django.conf import settings
 from django.test.utils import override_settings
 
 import cinderclient as cinder_client
-import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/test/unit/api/test_glance.py b/openstack_dashboard/test/unit/api/test_glance.py
index 0aac18a1d..3a364797d 100644
--- a/openstack_dashboard/test/unit/api/test_glance.py
+++ b/openstack_dashboard/test/unit/api/test_glance.py
@@ -16,9 +16,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from unittest import mock
+
 from django.conf import settings
 from django.test.utils import override_settings
-import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.api import base
diff --git a/openstack_dashboard/test/unit/api/test_keystone.py b/openstack_dashboard/test/unit/api/test_keystone.py
index 5ed2aa420..3513a1a7c 100644
--- a/openstack_dashboard/test/unit/api/test_keystone.py
+++ b/openstack_dashboard/test/unit/api/test_keystone.py
@@ -17,8 +17,8 @@
 #    under the License.
 
 from __future__ import absolute_import
+from unittest import mock
 
-import mock
 
 from openstack_dashboard import api
 from openstack_dashboard.test import helpers as test
diff --git a/openstack_dashboard/test/unit/api/test_microversions.py b/openstack_dashboard/test/unit/api/test_microversions.py
index 0cf79407c..732d69836 100644
--- a/openstack_dashboard/test/unit/api/test_microversions.py
+++ b/openstack_dashboard/test/unit/api/test_microversions.py
@@ -11,8 +11,8 @@
 #    under the License.
 
 import unittest
+from unittest import mock
 
-import mock
 
 from openstack_dashboard.api import microversions
 
diff --git a/openstack_dashboard/test/unit/api/test_network.py b/openstack_dashboard/test/unit/api/test_network.py
index bcabc1bdd..adda80f12 100644
--- a/openstack_dashboard/test/unit/api/test_network.py
+++ b/openstack_dashboard/test/unit/api/test_network.py
@@ -13,8 +13,8 @@
 #    under the License.
 
 import collections
+from unittest import mock
 
-import mock
 import netaddr
 
 from django.test.utils import override_settings
diff --git a/openstack_dashboard/test/unit/api/test_neutron.py b/openstack_dashboard/test/unit/api/test_neutron.py
index 959e0924f..4a42b8d45 100644
--- a/openstack_dashboard/test/unit/api/test_neutron.py
+++ b/openstack_dashboard/test/unit/api/test_neutron.py
@@ -12,8 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 import copy
+from unittest import mock
 
-import mock
 import netaddr
 from neutronclient.common import exceptions as neutron_exc
 from oslo_utils import uuidutils
diff --git a/openstack_dashboard/test/unit/api/test_nova.py b/openstack_dashboard/test/unit/api/test_nova.py
index 313b6fd92..478a6bbab 100644
--- a/openstack_dashboard/test/unit/api/test_nova.py
+++ b/openstack_dashboard/test/unit/api/test_nova.py
@@ -18,11 +18,11 @@
 #    under the License.
 
 from __future__ import absolute_import
+from unittest import mock
 
 from django.conf import settings
 from django.test.utils import override_settings
 
-import mock
 from novaclient import api_versions
 from novaclient import exceptions as nova_exceptions
 from novaclient.v2 import flavor_access as nova_flavor_access
diff --git a/openstack_dashboard/test/unit/api/test_swift.py b/openstack_dashboard/test/unit/api/test_swift.py
index e250bdf0f..3e47643a2 100644
--- a/openstack_dashboard/test/unit/api/test_swift.py
+++ b/openstack_dashboard/test/unit/api/test_swift.py
@@ -17,8 +17,7 @@
 #    under the License.
 
 from __future__ import absolute_import
-
-import mock
+from unittest import mock
 
 from horizon import exceptions
 
diff --git a/openstack_dashboard/test/unit/usage/test_quotas.py b/openstack_dashboard/test/unit/usage/test_quotas.py
index 46a5857fe..9d247a341 100644
--- a/openstack_dashboard/test/unit/usage/test_quotas.py
+++ b/openstack_dashboard/test/unit/usage/test_quotas.py
@@ -20,10 +20,10 @@
 from __future__ import absolute_import
 
 import collections
+from unittest import mock
 
 from django.test.utils import override_settings
 from django.utils.translation import ugettext_lazy as _
-import mock
 
 from horizon import exceptions
 from openstack_dashboard import api
diff --git a/test-requirements.txt b/test-requirements.txt
index c6b84aa0c..425b50751 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -13,7 +13,6 @@ astroid==2.1.0 # LGPLv2.1
 bandit!=1.6.0,>=1.4.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 flake8-import-order==0.12 # LGPLv3
-mock>=2.0.0 # BSD
 nodeenv>=0.9.4 # BSD
 python-memcached>=1.59 # PSF
 pylint==2.2.2 # GPLv2