Refs #24652 -- Used SimpleTestCase where appropriate.

tests/messages_tests/test_api.py

@@ -1,5 +1,5 @@
 from django.contrib import messages
-from django.test import RequestFactory, TestCase
+from django.test import RequestFactory, SimpleTestCase
 
 
 class DummyStorage(object):
@@ -14,7 +14,7 @@ class DummyStorage(object):
         self.store.append(message)
 
 
-class ApiTest(TestCase):
+class ApiTest(SimpleTestCase):
     def setUp(self):
         self.rf = RequestFactory()
         self.request = self.rf.request()

tests/messages_tests/test_cookie.py

@@ -5,7 +5,7 @@ from django.contrib.messages.storage.base import Message
 from django.contrib.messages.storage.cookie import (
     CookieStorage, MessageDecoder, MessageEncoder,
 )
-from django.test import TestCase, override_settings
+from django.test import SimpleTestCase, override_settings
 from django.utils.safestring import SafeData, mark_safe
 
 from .base import BaseTests
@@ -43,7 +43,7 @@ def stored_cookie_messages_count(storage, response):
 
 
 @override_settings(SESSION_COOKIE_DOMAIN='.example.com', SESSION_COOKIE_SECURE=True, SESSION_COOKIE_HTTPONLY=True)
-class CookieTest(BaseTests, TestCase):
+class CookieTest(BaseTests, SimpleTestCase):
     storage_class = CookieStorage
 
     def stored_messages_count(self, storage, response):

tests/messages_tests/test_fallback.py

@@ -2,14 +2,14 @@ from django.contrib.messages import constants
 from django.contrib.messages.storage.fallback import (
     CookieStorage, FallbackStorage,
 )
-from django.test import TestCase
+from django.test import SimpleTestCase
 
 from .base import BaseTests
 from .test_cookie import set_cookie_data, stored_cookie_messages_count
 from .test_session import set_session_data, stored_session_messages_count
 
 
-class FallbackTest(BaseTests, TestCase):
+class FallbackTest(BaseTests, SimpleTestCase):
     storage_class = FallbackStorage
 
     def get_request(self):

tests/messages_tests/test_mixins.py

@@ -1,11 +1,11 @@
 from django.core.urlresolvers import reverse
-from django.test import TestCase, override_settings
+from django.test import SimpleTestCase, override_settings
 
 from .urls import ContactFormViewWithMsg
 
 
 @override_settings(ROOT_URLCONF='messages_tests.urls')
-class SuccessMessageMixinTests(TestCase):
+class SuccessMessageMixinTests(SimpleTestCase):
 
     def test_set_messages_success(self):
         author = {'name': 'John Doe',