Ensure that the sitemaps test deactivates it's locale, so that subsequent...

from django.contrib.sites.models import Site

from django.test import TestCase

from django.utils.formats import localize

from django.utils.translation import activate

from django.utils.translation import activate, deactivate

class SitemapTests(TestCase):

        response = self.client.get('/simple/sitemap.xml')

        self.assertContains(response, '<priority>0.5</priority>')

        self.assertContains(response, '<lastmod>%s</lastmod>' % date.today().strftime('%Y-%m-%d'))

        deactivate()

    def test_generic_sitemap(self):

        "A minimal generic sitemap can be rendered"