Isolated a flatpages test; refs django#11505.

Author: timgraham

django/contrib/flatpages/tests/test_sitemaps.py

@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
 
 from django.apps import apps
+from django.contrib.sites.models import Site
 from django.test import TestCase
 from django.test.utils import modify_settings, override_settings
 
@@ -12,6 +13,13 @@
 @modify_settings(INSTALLED_APPS={'append': ['django.contrib.sitemaps']},)
 class FlatpagesSitemapTests(TestCase):
 
+ @classmethod
+ def setUpClass(cls):
+ super(FlatpagesSitemapTests, cls).setUpClass()
+ # This cleanup is necessary because contrib.sites cache
+ # makes tests interfere with each other, see #11505
+ Site.objects.clear_cache()
+
  @classmethod
  def setUpTestData(cls):
  Site = apps.get_model('sites.Site')