Stopped using django.utils.unittest in the test suite.

Refs #20680.

83 files changed, 129 insertions, 97 deletions

diff --git a/tests/admin_scripts/tests.py b/tests/admin_scripts/tests.py
index 2b772598d3..28f2dcb841 100644
--- a/tests/admin_scripts/tests.py
+++ b/tests/admin_scripts/tests.py
@@ -6,13 +6,14 @@ and default settings.py files.
 """
 from __future__ import unicode_literals
 
+import codecs
 import os
 import re
 import shutil
 import socket
 import subprocess
 import sys
-import codecs
+import unittest
 
 import django
 from django import conf, get_version
@@ -20,7 +21,6 @@ from django.conf import settings
 from django.core.management import BaseCommand, CommandError
 from django.db import connection
 from django.test.runner import DiscoverRunner
-from django.utils import unittest
 from django.utils.encoding import force_text
 from django.utils._os import upath
 from django.utils.six import StringIO
diff --git a/tests/admin_widgets/tests.py b/tests/admin_widgets/tests.py
index 4823883f42..8edb2f5904 100644
--- a/tests/admin_widgets/tests.py
+++ b/tests/admin_widgets/tests.py
@@ -2,6 +2,7 @@
 from __future__ import absolute_import, unicode_literals
 
 from datetime import datetime
+from unittest import TestCase
 
 from django import forms
 from django.conf import settings
@@ -16,7 +17,6 @@ from django.test.utils import override_settings
 from django.utils import six
 from django.utils import translation
 from django.utils.html import conditional_escape
-from django.utils.unittest import TestCase
 
 from . import models
 from .widgetadmin import site as widget_admin_site
diff --git a/tests/aggregation_regress/tests.py b/tests/aggregation_regress/tests.py
index 80441b9a60..35ac57d9be 100644
--- a/tests/aggregation_regress/tests.py
+++ b/tests/aggregation_regress/tests.py
@@ -10,7 +10,6 @@ from django.contrib.contenttypes.models import ContentType
 from django.db.models import Count, Max, Avg, Sum, StdDev, Variance, F, Q
 from django.test import TestCase, Approximate, skipUnlessDBFeature
 from django.utils import six
-from django.utils.unittest import expectedFailure
 
 from .models import (Author, Book, Publisher, Clues, Entries, HardbackBook,
         ItemTag, WithManualPK)
diff --git a/tests/app_loading/tests.py b/tests/app_loading/tests.py
index 6dd0be2194..e0c7cbd78c 100644
--- a/tests/app_loading/tests.py
+++ b/tests/app_loading/tests.py
@@ -4,11 +4,12 @@ import copy
 import os
 import sys
 import time
+from unittest import TestCase
 
 from django.conf import Settings
 from django.db.models.loading import cache, load_app, get_model, get_models
 from django.utils._os import upath
-from django.utils.unittest import TestCase
+
 
 class EggLoadingTest(TestCase):
 
diff --git a/tests/bash_completion/tests.py b/tests/bash_completion/tests.py
index 4fdb793feb..2da68b588a 100644
--- a/tests/bash_completion/tests.py
+++ b/tests/bash_completion/tests.py
@@ -3,10 +3,10 @@ A series of tests to establish that the command-line bash completion works.
 """
 import os
 import sys
+import unittest
 
 from django.conf import settings
 from django.core.management import ManagementUtility
-from django.utils import unittest
 from django.utils.six import StringIO
 
 
diff --git a/tests/bug639/tests.py b/tests/bug639/tests.py
index fcc1e0f7d1..71c50e14aa 100644
--- a/tests/bug639/tests.py
+++ b/tests/bug639/tests.py
@@ -8,9 +8,9 @@ from __future__ import absolute_import
 
 import os
 import shutil
+import unittest
 
 from django.core.files.uploadedfile import SimpleUploadedFile
-from django.utils import unittest
 from django.utils._os import upath
 
 from .models import Photo, PhotoForm, temp_storage_dir
diff --git a/tests/bug8245/tests.py b/tests/bug8245/tests.py
index 5da0b1f718..7a91d04af1 100644
--- a/tests/bug8245/tests.py
+++ b/tests/bug8245/tests.py
@@ -1,5 +1,6 @@
+from unittest import TestCase
+
 from django.contrib import admin
-from django.utils.unittest import TestCase
 
 
 class Bug8245Test(TestCase):
diff --git a/tests/builtin_server/tests.py b/tests/builtin_server/tests.py
index 662466a110..ef215ccf97 100644
--- a/tests/builtin_server/tests.py
+++ b/tests/builtin_server/tests.py
@@ -1,9 +1,9 @@
 from __future__ import unicode_literals
 
 from io import BytesIO
+from unittest import TestCase
 
 from django.core.servers.basehttp import ServerHandler, MAX_SOCKET_CHUNK_SIZE
-from django.utils.unittest import TestCase
 
 
 class DummyHandler(object):
diff --git a/tests/db_typecasts/tests.py b/tests/db_typecasts/tests.py
index 2cf835d94e..fc5305dcdd 100644
--- a/tests/db_typecasts/tests.py
+++ b/tests/db_typecasts/tests.py
@@ -1,10 +1,10 @@
 # Unit tests for typecast functions in django.db.backends.util
 
 import datetime
+import unittest
 
 from django.db.backends import util as typecasts
 from django.utils import six
-from django.utils import unittest
 
 
 TEST_CASES = {
diff --git a/tests/decorators/tests.py b/tests/decorators/tests.py
index 05016be231..2aaea49500 100644
--- a/tests/decorators/tests.py
+++ b/tests/decorators/tests.py
@@ -1,4 +1,5 @@
 from functools import wraps
+from unittest import TestCase
 
 from django.contrib.admin.views.decorators import staff_member_required
 from django.contrib.auth.decorators import login_required, permission_required, user_passes_test
@@ -6,7 +7,6 @@ from django.http import HttpResponse, HttpRequest, HttpResponseNotAllowed
 from django.middleware.clickjacking import XFrameOptionsMiddleware
 from django.utils.decorators import method_decorator
 from django.utils.functional import allow_lazy, lazy, memoize
-from django.utils.unittest import TestCase
 from django.views.decorators.cache import cache_page, never_cache, cache_control
 from django.views.decorators.clickjacking import xframe_options_deny, xframe_options_sameorigin, xframe_options_exempt
 from django.views.decorators.http import require_http_methods, require_GET, require_POST, require_safe, condition
diff --git a/tests/defaultfilters/tests.py b/tests/defaultfilters/tests.py
index d0009c6e66..15b96be881 100644
--- a/tests/defaultfilters/tests.py
+++ b/tests/defaultfilters/tests.py
@@ -3,11 +3,12 @@ from __future__ import unicode_literals
 
 import datetime
 import decimal
+import unittest
 
 from django.template.defaultfilters import *
 from django.test import TestCase
 from django.utils import six
-from django.utils import unittest, translation
+from django.utils import translation
 from django.utils.safestring import SafeData
 from django.utils.encoding import python_2_unicode_compatible
 
diff --git a/tests/dispatch/tests/test_dispatcher.py b/tests/dispatch/tests/test_dispatcher.py
index a1d4c7e176..5f7dca87cc 100644
--- a/tests/dispatch/tests/test_dispatcher.py
+++ b/tests/dispatch/tests/test_dispatcher.py
@@ -1,9 +1,9 @@
 import gc
 import sys
 import time
+import unittest
 
 from django.dispatch import Signal, receiver
-from django.utils import unittest
 
 
 if sys.platform.startswith('java'):
diff --git a/tests/dispatch/tests/test_saferef.py b/tests/dispatch/tests/test_saferef.py
index 30eaddfe18..a9a246304e 100644
--- a/tests/dispatch/tests/test_saferef.py
+++ b/tests/dispatch/tests/test_saferef.py
@@ -1,6 +1,7 @@
+import unittest
+
 from django.dispatch.saferef import safeRef
 from django.utils.six.moves import xrange
-from django.utils import unittest
 
 class Test1(object):
     def x(self):
diff --git a/tests/file_storage/tests.py b/tests/file_storage/tests.py
index e6caabf9d9..8cf4c33091 100644
--- a/tests/file_storage/tests.py
+++ b/tests/file_storage/tests.py
@@ -7,6 +7,7 @@ import shutil
 import sys
 import tempfile
 import time
+import unittest
 try:
     from urllib.request import urlopen
 except ImportError:     # Python 2
@@ -28,7 +29,6 @@ from django.core.files.storage import FileSystemStorage, get_storage_class
 from django.core.files.uploadedfile import UploadedFile
 from django.test import LiveServerTestCase, SimpleTestCase
 from django.utils import six
-from django.utils import unittest
 from django.utils._os import upath
 from django.test.utils import override_settings
 
diff --git a/tests/file_uploads/tests.py b/tests/file_uploads/tests.py
index 45e7342abd..66bc4465a2 100644
--- a/tests/file_uploads/tests.py
+++ b/tests/file_uploads/tests.py
@@ -8,6 +8,7 @@ import json
 import os
 import shutil
 import tempfile as sys_tempfile
+import unittest
 
 from django.core.files import temp as tempfile
 from django.core.files.uploadedfile import SimpleUploadedFile
@@ -16,7 +17,6 @@ from django.test import TestCase, client
 from django.test.utils import override_settings
 from django.utils.encoding import force_bytes
 from django.utils.six import StringIO
-from django.utils import unittest
 
 from . import uploadhandler
 from .models import FileModel
diff --git a/tests/files/tests.py b/tests/files/tests.py
index f1e3d5b14b..54eeee13e4 100644
--- a/tests/files/tests.py
+++ b/tests/files/tests.py
@@ -4,6 +4,7 @@ import os
 import gzip
 import shutil
 import tempfile
+import unittest
 
 from django.core.cache import cache
 from django.core.files import File
@@ -11,7 +12,6 @@ from django.core.files.move import file_move_safe
 from django.core.files.base import ContentFile
 from django.core.files.uploadedfile import SimpleUploadedFile
 from django.test import TestCase
-from django.utils import unittest
 from django.utils.six import StringIO
 
 from .models import Storage, temp_storage, temp_storage_location
diff --git a/tests/forms_tests/tests/test_validators.py b/tests/forms_tests/tests/test_validators.py
index 0598835cff..08fb96618c 100644
--- a/tests/forms_tests/tests/test_validators.py
+++ b/tests/forms_tests/tests/test_validators.py
@@ -1,9 +1,10 @@
 from __future__ import unicode_literals
 
+from unittest import TestCase
+
 from django import forms
 from django.core import validators
 from django.core.exceptions import ValidationError
-from django.utils.unittest import TestCase
 
 
 class UserForm(forms.Form):
diff --git a/tests/generic_views/test_base.py b/tests/generic_views/test_base.py
index f95732f8b5..013a8f282c 100644
--- a/tests/generic_views/test_base.py
+++ b/tests/generic_views/test_base.py
@@ -1,11 +1,11 @@
 from __future__ import absolute_import
 
 import time
+import unittest
 
 from django.core.exceptions import ImproperlyConfigured
 from django.http import HttpResponse
 from django.test import TestCase, RequestFactory
-from django.utils import unittest
 from django.views.generic import View, TemplateView, RedirectView
 
 from . import views
diff --git a/tests/generic_views/test_dates.py b/tests/generic_views/test_dates.py
index 263326322e..bff909f7d0 100644
--- a/tests/generic_views/test_dates.py
+++ b/tests/generic_views/test_dates.py
@@ -2,12 +2,12 @@ from __future__ import absolute_import
 
 import time
 import datetime
+from unittest import skipUnless
 
 from django.core.exceptions import ImproperlyConfigured
 from django.test import TestCase, skipUnlessDBFeature
 from django.test.utils import override_settings
 from django.utils import timezone
-from django.utils.unittest import skipUnless
 
 from .models import Book, BookSigning
 
diff --git a/tests/generic_views/test_edit.py b/tests/generic_views/test_edit.py
index 982d9e5778..9ed18833e4 100644
--- a/tests/generic_views/test_edit.py
+++ b/tests/generic_views/test_edit.py
@@ -1,12 +1,12 @@
 from __future__ import absolute_import
 
 import warnings
+from unittest import expectedFailure
 
 from django.core.exceptions import ImproperlyConfigured
 from django.core.urlresolvers import reverse
 from django import forms
 from django.test import TestCase
-from django.utils.unittest import expectedFailure
 from django.test.client import RequestFactory
 from django.views.generic.base import View
 from django.views.generic.edit import FormMixin, CreateView
diff --git a/tests/httpwrappers/tests.py b/tests/httpwrappers/tests.py
index 673409fd99..3a2ec23864 100644
--- a/tests/httpwrappers/tests.py
+++ b/tests/httpwrappers/tests.py
@@ -4,6 +4,7 @@ from __future__ import unicode_literals
 import copy
 import os
 import pickle
+import unittest
 import warnings
 
 from django.core.exceptions import SuspiciousOperation
@@ -18,7 +19,6 @@ from django.test import TestCase
 from django.utils.encoding import smart_str
 from django.utils._os import upath
 from django.utils import six
-from django.utils import unittest
 
 
 class QueryDictTests(unittest.TestCase):
diff --git a/tests/indexes/tests.py b/tests/indexes/tests.py
index 672e35d286..605fe9037c 100644
--- a/tests/indexes/tests.py
+++ b/tests/indexes/tests.py
@@ -1,7 +1,8 @@
+from unittest import skipUnless
+
 from django.core.management.color import no_style
 from django.db import connections, DEFAULT_DB_ALIAS
 from django.test import TestCase
-from django.utils.unittest import skipUnless
 
 from .models import Article
 
diff --git a/tests/inspectdb/tests.py b/tests/inspectdb/tests.py
index 79cbbfa3f2..c9093b9e9e 100644
--- a/tests/inspectdb/tests.py
+++ b/tests/inspectdb/tests.py
@@ -2,11 +2,11 @@
 from __future__ import unicode_literals
 
 import re
+from unittest import expectedFailure
 
 from django.core.management import call_command
 from django.db import connection
 from django.test import TestCase, skipUnlessDBFeature
-from django.utils.unittest import expectedFailure
 from django.utils.six import PY3, StringIO
 
 if connection.vendor == 'oracle':
diff --git a/tests/introspection/tests.py b/tests/introspection/tests.py
index 67e0266a66..f1c87bbf14 100644
--- a/tests/introspection/tests.py
+++ b/tests/introspection/tests.py
@@ -1,8 +1,9 @@
 from __future__ import absolute_import, unicode_literals
 
+import unittest
+
 from django.db import connection
 from django.test import TestCase, skipUnlessDBFeature, skipIfDBFeature
-from django.utils import unittest
 
 from .models import Reporter, Article
 
diff --git a/tests/invalid_models/tests.py b/tests/invalid_models/tests.py
index f878525b3b..9c9db91da9 100644
--- a/tests/invalid_models/tests.py
+++ b/tests/invalid_models/tests.py
@@ -1,11 +1,10 @@
 import copy
 import sys
+import unittest
 
 from django.core.management.validation import get_validation_errors
 from django.db.models.loading import cache, load_app
-
 from django.test.utils import override_settings
-from django.utils import unittest
 from django.utils.six import StringIO
 
 
diff --git a/tests/logging_tests/tests.py b/tests/logging_tests/tests.py
index 0c2d269464..cae2860306 100644
--- a/tests/logging_tests/tests.py
+++ b/tests/logging_tests/tests.py
@@ -3,6 +3,7 @@ from __future__ import unicode_literals
 import copy
 import logging
 import sys
+from unittest import skipUnless
 import warnings
 
 from django.conf import LazySettings
@@ -13,7 +14,6 @@ from django.utils.encoding import force_text
 from django.utils.log import (CallbackFilter, RequireDebugFalse,
     RequireDebugTrue)
 from django.utils.six import StringIO
-from django.utils.unittest import skipUnless
 
 from admin_scripts.tests import AdminScriptTestCase
 
diff --git a/tests/max_lengths/tests.py b/tests/max_lengths/tests.py
index 9dfcabff45..0f525864d5 100644
--- a/tests/max_lengths/tests.py
+++ b/tests/max_lengths/tests.py
@@ -1,6 +1,6 @@
 from __future__ import absolute_import
 
-from django.utils import unittest
+import unittest
 
 from .models import PersonWithDefaultMaxLengths, PersonWithCustomMaxLengths
 
@@ -36,4 +36,4 @@ class MaxLengthORMTests(unittest.TestCase):
             new_args = args.copy()
             new_args[field] = "X" * 250 # a value longer than any of the default fields could hold.
             p = PersonWithCustomMaxLengths.objects.create(**new_args)
-            self.assertEqual(getattr(p, field), ("X" * 250))
\ No newline at end of file
+            self.assertEqual(getattr(p, field), ("X" * 250))
diff --git a/tests/middleware/tests.py b/tests/middleware/tests.py
index f3165f939f..5ceab2e594 100644
--- a/tests/middleware/tests.py
+++ b/tests/middleware/tests.py
@@ -5,6 +5,7 @@ import gzip
 from io import BytesIO
 import random
 import re
+from unittest import expectedFailure, skipIf
 import warnings
 
 from django.conf import settings
@@ -22,7 +23,6 @@ from django.test.utils import override_settings, IgnoreDeprecationWarningsMixin
 from django.utils import six
 from django.utils.encoding import force_str
 from django.utils.six.moves import xrange
-from django.utils.unittest import expectedFailure, skipIf
 
 from .models import Band
 
diff --git a/tests/model_fields/test_imagefield.py b/tests/model_fields/test_imagefield.py
index 457892ddb8..f6019bd77f 100644
--- a/tests/model_fields/test_imagefield.py
+++ b/tests/model_fields/test_imagefield.py
@@ -2,13 +2,13 @@ from __future__ import absolute_import
 
 import os
 import shutil
+from unittest import skipIf
 
 from django.core.exceptions import ImproperlyConfigured
 from django.core.files import File
 from django.core.files.images import ImageFile
 from django.test import TestCase
 from django.utils._os import upath
-from django.utils.unittest import skipIf
 
 try:
     from .models import Image
diff --git a/tests/model_fields/tests.py b/tests/model_fields/tests.py
index 6abeed8c42..6546c49ec7 100644
--- a/tests/model_fields/tests.py
+++ b/tests/model_fields/tests.py
@@ -2,6 +2,7 @@ from __future__ import absolute_import, unicode_literals
 
 import datetime
 from decimal import Decimal
+import unittest
 
 from django import test
 from django import forms
@@ -9,7 +10,6 @@ from django.core.exceptions import ValidationError
 from django.db import connection, models, IntegrityError
 from django.db.models.fields.files import FieldFile
 from django.utils import six
-from django.utils import unittest
 
 from .models import (Foo, Bar, Whiz, BigD, BigS, Image, BigInt, Post,
     NullBooleanModel, BooleanModel, DataModel, Document, RenamedField,
diff --git a/tests/model_forms/tests.py b/tests/model_forms/tests.py
index 2c3caef016..9d71798b3d 100644
--- a/tests/model_forms/tests.py
+++ b/tests/model_forms/tests.py
@@ -3,6 +3,7 @@ from __future__ import absolute_import, unicode_literals
 import datetime
 import os
 from decimal import Decimal
+from unittest import skipUnless
 import warnings
 
 from django import forms
@@ -13,7 +14,6 @@ from django.db import connection
 from django.db.models.query import EmptyQuerySet
 from django.forms.models import model_to_dict
 from django.utils._os import upath
-from django.utils.unittest import skipUnless
 from django.test import TestCase
 from django.utils import six
 
diff --git a/tests/model_forms_regress/tests.py b/tests/model_forms_regress/tests.py
index 29d66a2cf0..35e706ac4c 100644
--- a/tests/model_forms_regress/tests.py
+++ b/tests/model_forms_regress/tests.py
@@ -1,6 +1,7 @@
 from __future__ import absolute_import, unicode_literals
 
 from datetime import date
+import unittest
 import warnings
 
 from django import forms
@@ -9,7 +10,6 @@ from django.core.files.uploadedfile import SimpleUploadedFile
 from django.forms.models import (modelform_factory, ModelChoiceField,
     fields_for_model, construct_instance, ModelFormMetaclass)
 from django.utils import six
-from django.utils import unittest
 from django.test import TestCase
 
 from .models import (Person, RealPerson, Triple, FilePathModel, Article,
diff --git a/tests/model_inheritance_regress/tests.py b/tests/model_inheritance_regress/tests.py
index 28635a29a9..7ca16647fa 100644
--- a/tests/model_inheritance_regress/tests.py
+++ b/tests/model_inheritance_regress/tests.py
@@ -5,10 +5,10 @@ from __future__ import absolute_import, unicode_literals
 
 import datetime
 from operator import attrgetter
-from django import forms
+from unittest import expectedFailure
 
+from django import forms
 from django.test import TestCase
-from django.utils.unittest import expectedFailure
 
 from .models import (Place, Restaurant, ItalianRestaurant, ParkingLot,
     ParkingLot2, ParkingLot3, Supplier, Wholesaler, Child, SelfRefParent,
diff --git a/tests/model_regress/tests.py b/tests/model_regress/tests.py
index 71ccb071d2..2924b220e6 100644
--- a/tests/model_regress/tests.py
+++ b/tests/model_regress/tests.py
@@ -3,12 +3,12 @@ from __future__ import absolute_import, unicode_literals
 import datetime
 from operator import attrgetter
 import sys
+import unittest
 
 from django.core.exceptions import ValidationError
 from django.test import TestCase, skipUnlessDBFeature
 from django.utils import six
 from django.utils import tzinfo
-from django.utils import unittest
 from django.db import connection, router
 from django.db.models.sql import InsertQuery
 
diff --git a/tests/modeladmin/tests.py b/tests/modeladmin/tests.py
index 805b57c070..0d0fed394a 100644
--- a/tests/modeladmin/tests.py
+++ b/tests/modeladmin/tests.py
@@ -1,6 +1,7 @@
 from __future__ import absolute_import, unicode_literals
 
 from datetime import date
+import unittest
 
 from django import forms
 from django.conf import settings
@@ -15,7 +16,7 @@ from django.forms.models import BaseModelFormSet
 from django.forms.widgets import Select
 from django.test import TestCase
 from django.test.utils import str_prefix
-from django.utils import unittest, six
+from django.utils import six
 
 from .models import Band, Concert, ValidationTestModel, ValidationTestInlineModel
 
diff --git a/tests/pagination/tests.py b/tests/pagination/tests.py
index 1dea4526e3..76799bec46 100644
--- a/tests/pagination/tests.py
+++ b/tests/pagination/tests.py
@@ -1,12 +1,12 @@
 from __future__ import absolute_import, unicode_literals
 
 from datetime import datetime
+import unittest
 
 from django.core.paginator import (Paginator, EmptyPage, InvalidPage,
     PageNotAnInteger)
 from django.test import TestCase
 from django.utils import six
-from django.utils import unittest
 
 from .models import Article
 from .custom import ValidAdjacentNumsPaginator
diff --git a/tests/queries/tests.py b/tests/queries/tests.py
index 352e87a634..6520eb0176 100644
--- a/tests/queries/tests.py
+++ b/tests/queries/tests.py
@@ -4,6 +4,7 @@ import datetime
 from operator import attrgetter
 import pickle
 import sys
+import unittest
 
 from django.conf import settings
 from django.core.exceptions import FieldError
@@ -13,7 +14,6 @@ from django.db.models.sql.where import WhereNode, EverythingNode, NothingNode
 from django.db.models.sql.datastructures import EmptyResultSet
 from django.test import TestCase, skipUnlessDBFeature
 from django.test.utils import str_prefix
-from django.utils import unittest
 from django.utils.datastructures import SortedDict
 
 from .models import (
diff --git a/tests/requests/tests.py b/tests/requests/tests.py
index d9120db4e7..b00eec87a9 100644
--- a/tests/requests/tests.py
+++ b/tests/requests/tests.py
@@ -1,10 +1,11 @@
 # -*- encoding: utf-8 -*-
 from __future__ import unicode_literals
 
-import time
-import warnings
 from datetime import datetime, timedelta
 from io import BytesIO
+import time
+from unittest import skipIf
+import warnings
 
 from django.db import connection, connections, DEFAULT_DB_ALIAS
 from django.core import signals
@@ -15,7 +16,6 @@ from django.test import SimpleTestCase, TransactionTestCase
 from django.test.client import FakePayload
 from django.test.utils import override_settings, str_prefix
 from django.utils import six
-from django.utils.unittest import skipIf
 from django.utils.http import cookie_date, urlencode
 from django.utils.timezone import utc
 
diff --git a/tests/resolve_url/tests.py b/tests/resolve_url/tests.py
index d0bf44abde..70f9e51781 100644
--- a/tests/resolve_url/tests.py
+++ b/tests/resolve_url/tests.py
@@ -1,8 +1,9 @@
 from __future__ import unicode_literals
 
+from unittest import TestCase
+
 from django.core.urlresolvers import NoReverseMatch
 from django.contrib.auth.views import logout
-from django.utils.unittest import TestCase
 from django.shortcuts import resolve_url
 
 from .models import UnimportantThing
diff --git a/tests/select_for_update/tests.py b/tests/select_for_update/tests.py
index f087ca123a..b8a8ad19bf 100644
--- a/tests/select_for_update/tests.py
+++ b/tests/select_for_update/tests.py
@@ -2,13 +2,13 @@ from __future__ import absolute_import
 
 import sys
 import time
+import unittest
 
 from django.conf import settings
 from django.db import transaction, connection
 from django.db.utils import ConnectionHandler, DEFAULT_DB_ALIAS, DatabaseError
 from django.test import (TransactionTestCase, skipIfDBFeature,
     skipUnlessDBFeature)
-from django.utils import unittest
 
 from .models import Person
 
diff --git a/tests/select_related_onetoone/tests.py b/tests/select_related_onetoone/tests.py
index fce8fc4e73..d8ba4d0484 100644
--- a/tests/select_related_onetoone/tests.py
+++ b/tests/select_related_onetoone/tests.py
@@ -1,7 +1,8 @@
 from __future__ import absolute_import
 
+import unittest
+
 from django.test import TestCase
-from django.utils import unittest
 
 from .models import (User, UserProfile, UserStat, UserStatResult, StatDetails,
     AdvancedUserStat, Image, Product, Parent1, Parent2, Child1, Child2, Child3,
diff --git a/tests/serializers/tests.py b/tests/serializers/tests.py
index 038276ca21..bff7c53249 100644
--- a/tests/serializers/tests.py
+++ b/tests/serializers/tests.py
@@ -3,6 +3,7 @@ from __future__ import absolute_import, unicode_literals
 # -*- coding: utf-8 -*-
 import json
 from datetime import datetime
+import unittest
 from xml.dom import minidom
 
 from django.conf import settings
@@ -11,7 +12,6 @@ from django.db import transaction, connection
 from django.test import TestCase, TransactionTestCase, Approximate
 from django.utils import six
 from django.utils.six import StringIO
-from django.utils import unittest
 
 from .models import (Category, Author, Article, AuthorProfile, Actor, Movie,
     Score, Player, Team)
diff --git a/tests/serializers_regress/tests.py b/tests/serializers_regress/tests.py
index 04b4d4c839..1751816cee 100644
--- a/tests/serializers_regress/tests.py
+++ b/tests/serializers_regress/tests.py
@@ -10,7 +10,7 @@ from __future__ import absolute_import, unicode_literals
 
 import datetime
 import decimal
-from django.core.serializers.xml_serializer import DTDForbidden
+from unittest import expectedFailure, skipUnless
 
 try:
     import yaml
@@ -20,13 +20,13 @@ except ImportError:
 from django.core import serializers
 from django.core.serializers import SerializerDoesNotExist
 from django.core.serializers.base import DeserializationError
+from django.core.serializers.xml_serializer import DTDForbidden
 from django.db import connection, models
 from django.http import HttpResponse
 from django.test import TestCase
 from django.utils import six
 from django.utils.encoding import force_text
 from django.utils.functional import curry
-from django.utils.unittest import expectedFailure, skipUnless
 
 from .models import (BinaryData, BooleanData, CharData, DateData, DateTimeData, EmailData,
     FileData, FilePathData, DecimalData, FloatData, IntegerData, IPAddressData,
diff --git a/tests/settings_tests/tests.py b/tests/settings_tests/tests.py
index 625c4f31df..bfd8d607a9 100644
--- a/tests/settings_tests/tests.py
+++ b/tests/settings_tests/tests.py
@@ -1,4 +1,5 @@
 import os
+import unittest
 import warnings
 
 from django.conf import settings, global_settings
@@ -6,7 +7,7 @@ from django.core.exceptions import ImproperlyConfigured
 from django.http import HttpRequest
 from django.test import SimpleTestCase, TransactionTestCase, TestCase, signals
 from django.test.utils import override_settings
-from django.utils import unittest, six
+from django.utils import six
 
 
 @override_settings(TEST='override', TEST_OUTER='outer')
diff --git a/tests/str/tests.py b/tests/str/tests.py
index bd85c48d05..d82908a0ee 100644
--- a/tests/str/tests.py
+++ b/tests/str/tests.py
@@ -2,10 +2,10 @@
 from __future__ import absolute_import, unicode_literals
 
 import datetime
+from unittest import skipIf
 
 from django.test import TestCase
 from django.utils import six
-from django.utils.unittest import skipIf
 
 from .models import Article, BrokenArticle, InternationalArticle
 
diff --git a/tests/template_tests/loaders.py b/tests/template_tests/loaders.py
index b77965203f..497b422e7f 100644
--- a/tests/template_tests/loaders.py
+++ b/tests/template_tests/loaders.py
@@ -9,15 +9,16 @@ from django.conf import settings
 if __name__ == '__main__':
     settings.configure()
 
-import sys
-import pkg_resources
 import imp
 import os.path
+import pkg_resources
+import sys
+import unittest
 
 from django.template import TemplateDoesNotExist, Context
 from django.template.loaders.eggs import Loader as EggLoader
 from django.template import loader
-from django.utils import unittest, six
+from django.utils import six
 from django.utils._os import upath
 from django.utils.six import StringIO
 
diff --git a/tests/template_tests/test_callables.py b/tests/template_tests/test_callables.py
index 882a8c6e06..718b7740d9 100644
--- a/tests/template_tests/test_callables.py
+++ b/tests/template_tests/test_callables.py
@@ -1,7 +1,8 @@
 from __future__ import unicode_literals
 
+from unittest import TestCase
+
 from django import template
-from django.utils.unittest import TestCase
 
 class CallableVariablesTests(TestCase):
 
diff --git a/tests/template_tests/test_context.py b/tests/template_tests/test_context.py
index 05c1dd57b9..224b94d060 100644
--- a/tests/template_tests/test_context.py
+++ b/tests/template_tests/test_context.py
@@ -1,6 +1,8 @@
 # coding: utf-8
+
+from unittest import TestCase
+
 from django.template import Context
-from django.utils.unittest import TestCase
 
 
 class ContextTests(TestCase):
diff --git a/tests/template_tests/test_custom.py b/tests/template_tests/test_custom.py
index 4aea08237d..e941bc223e 100644
--- a/tests/template_tests/test_custom.py
+++ b/tests/template_tests/test_custom.py
@@ -1,8 +1,9 @@
 from __future__ import absolute_import, unicode_literals
 
+from unittest import TestCase
+
 from django import template
 from django.utils import six
-from django.utils.unittest import TestCase
 
 from .templatetags import custom
 
diff --git a/tests/template_tests/test_nodelist.py b/tests/template_tests/test_nodelist.py
index 97aa5af6a7..755c0c3bea 100644
--- a/tests/template_tests/test_nodelist.py
+++ b/tests/template_tests/test_nodelist.py
@@ -1,6 +1,7 @@
+from unittest import TestCase
+
 from django.template import VariableNode, Context
 from django.template.loader import get_template_from_string
-from django.utils.unittest import TestCase
 from django.test.utils import override_settings
 
 class NodelistTest(TestCase):
diff --git a/tests/template_tests/test_parser.py b/tests/template_tests/test_parser.py
index 9422da80d7..e626bfd34f 100644
--- a/tests/template_tests/test_parser.py
+++ b/tests/template_tests/test_parser.py
@@ -3,10 +3,11 @@ Testing some internals of the template processing. These are *not* examples to b
 """
 from __future__ import unicode_literals
 
+from unittest import TestCase
+
 from django.template import (TokenParser, FilterExpression, Parser, Variable,
     Template, TemplateSyntaxError)
 from django.test.utils import override_settings
-from django.utils.unittest import TestCase
 from django.utils import six
 
 
diff --git a/tests/template_tests/test_smartif.py b/tests/template_tests/test_smartif.py
index 3a705ca663..4345e04126 100644
--- a/tests/template_tests/test_smartif.py
+++ b/tests/template_tests/test_smartif.py
@@ -1,5 +1,6 @@
+import unittest
+
 from django.template.smartif import IfParser
-from django.utils import unittest
 
 class SmartIfTests(unittest.TestCase):
 
diff --git a/tests/template_tests/test_unicode.py b/tests/template_tests/test_unicode.py
index 7cb2a28d15..773dd543b7 100644
--- a/tests/template_tests/test_unicode.py
+++ b/tests/template_tests/test_unicode.py
@@ -1,10 +1,11 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
+from unittest import TestCase
+
 from django.template import Template, TemplateEncodingError, Context
 from django.utils.safestring import SafeData
 from django.utils import six
-from django.utils.unittest import TestCase
 
 
 class UnicodeTests(TestCase):
diff --git a/tests/template_tests/tests.py b/tests/template_tests/tests.py
index ff31795fff..6b8a106623 100644
--- a/tests/template_tests/tests.py
+++ b/tests/template_tests/tests.py
@@ -13,6 +13,7 @@ import time
 import os
 import sys
 import traceback
+import unittest
 try:
     from urllib.parse import urljoin
 except ImportError:     # Python 2
@@ -27,7 +28,6 @@ from django.template.loaders import app_directories, filesystem, cached
 from django.test import RequestFactory, TestCase
 from django.test.utils import (setup_test_template_loader,
     restore_template_loaders, override_settings)
-from django.utils import unittest
 from django.utils.encoding import python_2_unicode_compatible
 from django.utils.formats import date_format
 from django.utils._os import upath
diff --git a/tests/test_runner/test_discover_runner.py b/tests/test_runner/test_discover_runner.py
index 1a0fb88367..b4f04e8bb0 100644
--- a/tests/test_runner/test_discover_runner.py
+++ b/tests/test_runner/test_discover_runner.py
@@ -1,10 +1,10 @@
 from contextlib import contextmanager
 import os
 import sys
+from unittest import expectedFailure
 
 from django.test import TestCase
 from django.test.runner import DiscoverRunner
-from django.utils.unittest import expectedFailure
 
 try:
     import unittest2
diff --git a/tests/test_runner/tests.py b/tests/test_runner/tests.py
index 53a268e823..28ae0833c9 100644
--- a/tests/test_runner/tests.py
+++ b/tests/test_runner/tests.py
@@ -3,8 +3,9 @@ Tests for django test runner
 """
 from __future__ import absolute_import, unicode_literals
 
-import sys
 from optparse import make_option
+import sys
+import unittest
 
 from django.core.exceptions import ImproperlyConfigured
 from django.core.management import call_command
@@ -12,7 +13,6 @@ from django import db
 from django.test import runner, TestCase, TransactionTestCase, skipUnlessDBFeature
 from django.test.testcases import connections_support_transactions
 from django.test.utils import IgnoreDeprecationWarningsMixin
-from django.utils import unittest
 from django.utils.importlib import import_module
 
 from admin_scripts.tests import AdminScriptTestCase
diff --git a/tests/test_suite_override/tests.py b/tests/test_suite_override/tests.py
index 6050e0c509..e647c02d76 100644
--- a/tests/test_suite_override/tests.py
+++ b/tests/test_suite_override/tests.py
@@ -1,6 +1,7 @@
+import unittest
+
 from django.db.models import get_app
 from django.test.utils import IgnoreDeprecationWarningsMixin
-from django.utils import unittest
 
 
 def suite():
diff --git a/tests/test_utils/tests.py b/tests/test_utils/tests.py
index ec98a845a0..775a4a7c11 100644
--- a/tests/test_utils/tests.py
+++ b/tests/test_utils/tests.py
@@ -1,6 +1,9 @@
 # -*- coding: utf-8 -*-
 from __future__ import absolute_import, unicode_literals
 
+import unittest
+from unittest import skip
+
 from django.db import connection
 from django.forms import EmailField, IntegerField
 from django.http import HttpResponse
@@ -9,8 +12,6 @@ from django.test import SimpleTestCase, TestCase, skipUnlessDBFeature
 from django.test.html import HTMLParseError, parse_html
 from django.test.utils import CaptureQueriesContext, IgnoreDeprecationWarningsMixin
 from django.utils import six
-from django.utils import unittest
-from django.utils.unittest import skip
 
 from .models import Person
 
diff --git a/tests/timezones/tests.py b/tests/timezones/tests.py
index dce5c3041d..49169f90f2 100644
--- a/tests/timezones/tests.py
+++ b/tests/timezones/tests.py
@@ -5,6 +5,7 @@ import os
 import re
 import sys
 import time
+from unittest import skipIf, skipUnless
 import warnings
 from xml.dom.minidom import parseString
 
@@ -25,7 +26,6 @@ from django.test.utils import override_settings
 from django.utils import six
 from django.utils import timezone
 from django.utils.tzinfo import FixedOffset
-from django.utils.unittest import skipIf, skipUnless
 
 from .forms import EventForm, EventSplitForm, EventModelForm
 from .models import Event, MaybeEvent, Session, SessionEvent, Timestamp, AllDayEvent
diff --git a/tests/transactions/tests.py b/tests/transactions/tests.py
index 2da4d9fc9a..afb573f366 100644
--- a/tests/transactions/tests.py
+++ b/tests/transactions/tests.py
@@ -1,12 +1,12 @@
 from __future__ import absolute_import
 
 import sys
+from unittest import skipIf, skipUnless
 
 from django.db import connection, transaction, DatabaseError, IntegrityError
 from django.test import TransactionTestCase, skipUnlessDBFeature
 from django.test.utils import IgnoreDeprecationWarningsMixin
 from django.utils import six
-from django.utils.unittest import skipIf, skipUnless
 
 from .models import Reporter
 
diff --git a/tests/transactions_regress/tests.py b/tests/transactions_regress/tests.py
index 7db32fa4f3..bd9e78b033 100644
--- a/tests/transactions_regress/tests.py
+++ b/tests/transactions_regress/tests.py
@@ -1,11 +1,12 @@
 from __future__ import absolute_import
 
+from unittest import skipIf, skipUnless
+
 from django.db import (connection, connections, transaction, DEFAULT_DB_ALIAS, DatabaseError,
                        IntegrityError)
 from django.db.transaction import commit_on_success, commit_manually, TransactionManagementError
 from django.test import TransactionTestCase, skipUnlessDBFeature
 from django.test.utils import override_settings, IgnoreDeprecationWarningsMixin
-from django.utils.unittest import skipIf, skipUnless
 
 from .models import Mod, M2mA, M2mB, SubMod
 
diff --git a/tests/urlpatterns_reverse/tests.py b/tests/urlpatterns_reverse/tests.py
index 3962f69288..222ebe053b 100644
--- a/tests/urlpatterns_reverse/tests.py
+++ b/tests/urlpatterns_reverse/tests.py
@@ -3,6 +3,8 @@ Unit tests for reverse URL lookups.
 """
 from __future__ import absolute_import, unicode_literals
 
+import unittest
+
 from django.conf import settings
 from django.contrib.auth.models import User
 from django.core.exceptions import ImproperlyConfigured, ViewDoesNotExist
@@ -12,7 +14,7 @@ from django.core.urlresolvers import (reverse, resolve, get_callable,
 from django.http import HttpRequest, HttpResponseRedirect, HttpResponsePermanentRedirect
 from django.shortcuts import redirect
 from django.test import TestCase
-from django.utils import unittest, six
+from django.utils import six
 
 from . import urlconf_outer, middleware, views
 
diff --git a/tests/utils_tests/test_archive.py b/tests/utils_tests/test_archive.py
index 8861b4a577..f00f25e855 100644
--- a/tests/utils_tests/test_archive.py
+++ b/tests/utils_tests/test_archive.py
@@ -1,7 +1,7 @@
 import os
 import shutil
 import tempfile
-from django.utils import unittest
+import unittest
 
 from django.utils.archive import Archive, extract
 from django.utils._os import upath
diff --git a/tests/utils_tests/test_baseconv.py b/tests/utils_tests/test_baseconv.py
index d69a3a6412..d49dde1092 100644
--- a/tests/utils_tests/test_baseconv.py
+++ b/tests/utils_tests/test_baseconv.py
@@ -1,4 +1,5 @@
-from django.utils.unittest import TestCase
+from unittest import TestCase
+
 from django.utils.baseconv import base2, base16, base36, base56, base62, base64, BaseConverter
 from django.utils.six.moves import xrange
 
diff --git a/tests/utils_tests/test_crypto.py b/tests/utils_tests/test_crypto.py
index 5cf2934ab0..4c1d10bb5f 100644
--- a/tests/utils_tests/test_crypto.py
+++ b/tests/utils_tests/test_crypto.py
@@ -1,11 +1,11 @@
 from __future__ import unicode_literals
 
 import binascii
+import hashlib
 import math
 import timeit
-import hashlib
+import unittest
 
-from django.utils import unittest
 from django.utils.crypto import constant_time_compare, pbkdf2
 
 
diff --git a/tests/utils_tests/test_dateparse.py b/tests/utils_tests/test_dateparse.py
index 1a6ca646b8..836c26c573 100644
--- a/tests/utils_tests/test_dateparse.py
+++ b/tests/utils_tests/test_dateparse.py
@@ -1,9 +1,9 @@
 from __future__ import unicode_literals
 
 from datetime import date, time, datetime
+import unittest
 
 from django.utils.dateparse import parse_date, parse_time, parse_datetime
-from django.utils import unittest
 from django.utils.tzinfo import FixedOffset
 
 
diff --git a/tests/utils_tests/test_encoding.py b/tests/utils_tests/test_encoding.py
index 7aaba25a7a..72c35adec6 100644
--- a/tests/utils_tests/test_encoding.py
+++ b/tests/utils_tests/test_encoding.py
@@ -1,7 +1,8 @@
 # -*- encoding: utf-8 -*-
 from __future__ import unicode_literals
 
-from django.utils import unittest
+import unittest
+
 from django.utils.encoding import force_bytes, filepath_to_uri
 
 
diff --git a/tests/utils_tests/test_functional.py b/tests/utils_tests/test_functional.py
index 3bb50007c6..df377c6e06 100644
--- a/tests/utils_tests/test_functional.py
+++ b/tests/utils_tests/test_functional.py
@@ -1,4 +1,5 @@
-from django.utils import unittest
+import unittest
+
 from django.utils.functional import lazy, lazy_property, cached_property
 
 
diff --git a/tests/utils_tests/test_html.py b/tests/utils_tests/test_html.py
index b973f1c64f..1f2e19d8d5 100644
--- a/tests/utils_tests/test_html.py
+++ b/tests/utils_tests/test_html.py
@@ -2,11 +2,11 @@ from __future__ import unicode_literals
 
 from datetime import datetime
 import os
+from unittest import TestCase
 
 from django.utils import html
 from django.utils._os import upath
 from django.utils.encoding import force_text
-from django.utils.unittest import TestCase
 
 
 class TestUtilsHtml(TestCase):
diff --git a/tests/utils_tests/test_http.py b/tests/utils_tests/test_http.py
index 6d3bc025af..581eb1dcd7 100644
--- a/tests/utils_tests/test_http.py
+++ b/tests/utils_tests/test_http.py
@@ -1,12 +1,12 @@
 from datetime import datetime
 import sys
+import unittest
 
 from django.http import HttpResponse, utils
 from django.test import RequestFactory
 from django.utils.datastructures import MultiValueDict
 from django.utils import http
 from django.utils import six
-from django.utils import unittest
 
 
 class TestUtilsHttp(unittest.TestCase):
diff --git a/tests/utils_tests/test_ipv6.py b/tests/utils_tests/test_ipv6.py
index 1713de82b8..662e8b4135 100644
--- a/tests/utils_tests/test_ipv6.py
+++ b/tests/utils_tests/test_ipv6.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
 
-from django.utils import unittest
+import unittest
+
 from django.utils.ipv6 import is_valid_ipv6_address, clean_ipv6_address
 
 class TestUtilsIPv6(unittest.TestCase):
diff --git a/tests/utils_tests/test_module_loading.py b/tests/utils_tests/test_module_loading.py
index 0a905ef2f1..5a43a927bf 100644
--- a/tests/utils_tests/test_module_loading.py
+++ b/tests/utils_tests/test_module_loading.py
@@ -1,10 +1,10 @@
+import imp
 import os
 import sys
-import imp
+import unittest
 from zipimport import zipimporter
 
 from django.core.exceptions import ImproperlyConfigured
-from django.utils import unittest
 from django.utils.importlib import import_module
 from django.utils.module_loading import import_by_path, module_has_submodule
 from django.utils._os import upath
diff --git a/tests/utils_tests/test_os_utils.py b/tests/utils_tests/test_os_utils.py
index a205d67431..da54e93ac0 100644
--- a/tests/utils_tests/test_os_utils.py
+++ b/tests/utils_tests/test_os_utils.py
@@ -1,6 +1,6 @@
 import os
+import unittest
 
-from django.utils import unittest
 from django.utils._os import safe_join
 
 
diff --git a/tests/utils_tests/test_regex_helper.py b/tests/utils_tests/test_regex_helper.py
index 41f4a4f85d..055da89ee0 100644
--- a/tests/utils_tests/test_regex_helper.py
+++ b/tests/utils_tests/test_regex_helper.py
@@ -1,7 +1,8 @@
 from __future__ import unicode_literals
 
+import unittest
+
 from django.utils import regex_helper
-from django.utils import unittest
 
 
 class NormalizeTests(unittest.TestCase):
diff --git a/tests/utils_tests/test_simplelazyobject.py b/tests/utils_tests/test_simplelazyobject.py
index 4c01bd3adf..7b681d9290 100644
--- a/tests/utils_tests/test_simplelazyobject.py
+++ b/tests/utils_tests/test_simplelazyobject.py
@@ -3,9 +3,9 @@ from __future__ import unicode_literals
 import copy
 import pickle
 import sys
+from unittest import TestCase
 
 from django.utils import six
-from django.utils.unittest import TestCase
 from django.utils.functional import SimpleLazyObject, empty
 
 
diff --git a/tests/utils_tests/test_termcolors.py b/tests/utils_tests/test_termcolors.py
index 8cc28009cd..3a74244c09 100644
--- a/tests/utils_tests/test_termcolors.py
+++ b/tests/utils_tests/test_termcolors.py
@@ -1,4 +1,5 @@
-from django.utils import unittest
+import unittest
+
 from django.utils.termcolors import (parse_color_setting, PALETTES,
     DEFAULT_PALETTE, LIGHT_PALETTE, DARK_PALETTE, NOCOLOR_PALETTE, colorize)
 
diff --git a/tests/utils_tests/test_timezone.py b/tests/utils_tests/test_timezone.py
index 650198e8ff..2a13c10d7c 100644
--- a/tests/utils_tests/test_timezone.py
+++ b/tests/utils_tests/test_timezone.py
@@ -1,10 +1,11 @@
 import copy
 import datetime
 import pickle
+import unittest
+
 from django.test.utils import override_settings
 from django.utils import timezone
 from django.utils.tzinfo import FixedOffset
-from django.utils import unittest
 
 
 EAT = FixedOffset(180)      # Africa/Nairobi
diff --git a/tests/utils_tests/test_tzinfo.py b/tests/utils_tests/test_tzinfo.py
index cec92652cd..1867743fef 100644
--- a/tests/utils_tests/test_tzinfo.py
+++ b/tests/utils_tests/test_tzinfo.py
@@ -3,8 +3,9 @@ import datetime
 import os
 import pickle
 import time
+import unittest
+
 from django.utils.tzinfo import FixedOffset, LocalTimezone
-from django.utils import unittest
 
 class TzinfoTests(unittest.TestCase):
 
diff --git a/tests/validation/test_error_messages.py b/tests/validation/test_error_messages.py
index 63c033a750..aa01db6007 100644
--- a/tests/validation/test_error_messages.py
+++ b/tests/validation/test_error_messages.py
@@ -1,10 +1,11 @@
 # -*- encoding: utf-8 -*-
 from __future__ import unicode_literals
 
+from unittest import TestCase
+
 from django.core.exceptions import ValidationError
 from django.db import models
 from django.utils import six
-from django.utils.unittest import TestCase
 
 
 class ValidationMessagesTest(TestCase):
diff --git a/tests/validation/test_unique.py b/tests/validation/test_unique.py
index 038da16494..a481fcb1c4 100644
--- a/tests/validation/test_unique.py
+++ b/tests/validation/test_unique.py
@@ -1,10 +1,10 @@
 from __future__ import absolute_import, unicode_literals
 
 import datetime
+import unittest
 
 from django.core.exceptions import ValidationError
 from django.test import TestCase
-from django.utils import unittest
 
 from .models import (CustomPKModel, UniqueTogetherModel, UniqueFieldsModel,
     UniqueForDateModel, ModelToValidate, Post, FlexibleDatePost,
diff --git a/tests/validators/tests.py b/tests/validators/tests.py
index a1555d8e91..ec3e2dc8c1 100644
--- a/tests/validators/tests.py
+++ b/tests/validators/tests.py
@@ -1,14 +1,14 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
+from datetime import datetime, timedelta
 import re
 import types
-from datetime import datetime, timedelta
+from unittest import TestCase
 
 from django.core.exceptions import ValidationError
 from django.core.validators import *
 from django.test.utils import str_prefix
-from django.utils.unittest import TestCase
 
 
 NOW = datetime.now()
diff --git a/tests/version/tests.py b/tests/version/tests.py
index 64621a5cb6..a5d49fc450 100644
--- a/tests/version/tests.py
+++ b/tests/version/tests.py
@@ -1,8 +1,8 @@
 import re
+from unittest import TestCase
 
 from django import get_version
 from django.utils import six
-from django.utils.unittest import TestCase
 
 class VersionTests(TestCase):
 
diff --git a/tests/view_tests/tests/test_debug.py b/tests/view_tests/tests/test_debug.py
index f686eee0e0..bc77fc351a 100644
--- a/tests/view_tests/tests/test_debug.py
+++ b/tests/view_tests/tests/test_debug.py
@@ -8,6 +8,7 @@ import os
 import shutil
 import sys
 from tempfile import NamedTemporaryFile, mkdtemp, mkstemp
+from unittest import skipIf
 
 from django.core import mail
 from django.core.files.uploadedfile import SimpleUploadedFile
@@ -22,7 +23,6 @@ from .. import BrokenException, except_args
 from ..views import (sensitive_view, non_sensitive_view, paranoid_view,
     custom_exception_reporter_filter_view, sensitive_method_view,
     sensitive_args_function_caller, sensitive_kwargs_function_caller)
-from django.utils.unittest import skipIf
 
 
 @override_settings(DEBUG=True, TEMPLATE_DEBUG=True)