diff --git a/django/contrib/auth/tests/views.py b/django/contrib/auth/tests/views.py
index a5d0262114..ed1c81edfa 100644
--- a/django/contrib/auth/tests/views.py
+++ b/django/contrib/auth/tests/views.py
@@ -191,10 +191,13 @@ class LoginTest(AuthViewsTestCase):
     def test_current_site_in_context_after_login(self):
         response = self.client.get(reverse('django.contrib.auth.views.login'))
         self.assertEquals(response.status_code, 200)
-        site = Site.objects.get_current()
-        self.assertEquals(response.context['site'], site)
-        self.assertEquals(response.context['site_name'], site.name)
-        self.assert_(isinstance(response.context['form'], AuthenticationForm), 
+        if Site._meta.installed:
+            site = Site.objects.get_current()
+            self.assertEquals(response.context['site'], site)
+            self.assertEquals(response.context['site_name'], site.name)
+        else:
+            self.assertTrue(isinstance(response.context['site'], RequestSite))
+        self.assert_(isinstance(response.context['form'], AuthenticationForm),
                      'Login form is not an AuthenticationForm')
 
     def test_security_check(self, password='password'):
@@ -236,7 +239,7 @@ class LoginTest(AuthViewsTestCase):
             self.assertEquals(response.status_code, 302)
             self.assertTrue('/view/?param=%s' % url_ in response['Location'], "/view/?param=%s should be allowed" % url_)
 
-        
+
 class LogoutTest(AuthViewsTestCase):
     urls = 'django.contrib.auth.tests.urls'
 
@@ -267,7 +270,7 @@ class LogoutTest(AuthViewsTestCase):
         response = self.client.get('/logout/')
         self.assertTrue('site' in response.context)
 
-    def test_logout_with_next_page_specified(self): 
+    def test_logout_with_next_page_specified(self):
         "Logout with next_page option given redirects to specified resource"
         self.login()
         response = self.client.get('/logout/next_page/')
diff --git a/django/contrib/contenttypes/tests.py b/django/contrib/contenttypes/tests.py
index a846b07790..7a1ca99d33 100644
--- a/django/contrib/contenttypes/tests.py
+++ b/django/contrib/contenttypes/tests.py
@@ -61,9 +61,11 @@ class ContentTypesTests(TestCase):
         from django.contrib.auth.models import User
         user_ct = ContentType.objects.get_for_model(User)
         obj = User.objects.create(username="john")
-        Site._meta.installed = True
-        response = shortcut(request, user_ct.id, obj.id)
-        self.assertEqual("http://example.com/users/john/", response._headers.get("location")[1])
+
+        if Site._meta.installed:
+            response = shortcut(request, user_ct.id, obj.id)
+            self.assertEqual("http://example.com/users/john/", response._headers.get("location")[1])
+
         Site._meta.installed = False
         response = shortcut(request, user_ct.id, obj.id)
         self.assertEqual("http://Example.com/users/john/", response._headers.get("location")[1])
diff --git a/django/contrib/sitemaps/tests/basic.py b/django/contrib/sitemaps/tests/basic.py
index a47f4d8979..570316053a 100644
--- a/django/contrib/sitemaps/tests/basic.py
+++ b/django/contrib/sitemaps/tests/basic.py
@@ -13,6 +13,10 @@ class SitemapTests(TestCase):
     urls = 'django.contrib.sitemaps.tests.urls'
 
     def setUp(self):
+        if Site._meta.installed:
+            self.base_url = 'http://example.com'
+        else:
+            self.base_url = 'http://testserver'
         self.old_USE_L10N = settings.USE_L10N
         self.old_Site_meta_installed = Site._meta.installed
         # Create a user that will double as sitemap content
@@ -29,9 +33,9 @@ class SitemapTests(TestCase):
         # Check for all the important bits:
         self.assertEquals(response.content, """<?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
-<url><loc>http://example.com/location/</loc><lastmod>%s</lastmod><changefreq>never</changefreq><priority>0.5</priority></url>
+<url><loc>%s/location/</loc><lastmod>%s</lastmod><changefreq>never</changefreq><priority>0.5</priority></url>
 </urlset>
-""" % date.today().strftime('%Y-%m-%d'))
+""" % (self.base_url, date.today().strftime('%Y-%m-%d')))
 
     if settings.USE_I18N:
         def test_localized_priority(self):
@@ -55,13 +59,13 @@ class SitemapTests(TestCase):
 
         expected = ''
         for username in User.objects.values_list("username", flat=True):
-            expected += "<url><loc>http://example.com/users/%s/</loc></url>" %username
+            expected += "<url><loc>%s/users/%s/</loc></url>" % (self.base_url, username)
         # Check for all the important bits:
         self.assertEquals(response.content, """<?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
 %s
 </urlset>
-""" %expected)
+""" % expected)
 
     if "django.contrib.flatpages" in settings.INSTALLED_APPS:
         def test_flatpage_sitemap(self):
@@ -89,9 +93,9 @@ class SitemapTests(TestCase):
             private.sites.add(settings.SITE_ID)
             response = self.client.get('/flatpages/sitemap.xml')
             # Public flatpage should be in the sitemap
-            self.assertContains(response, '<loc>http://example.com%s</loc>' % public.url)
+            self.assertContains(response, '<loc>http://%s%s</loc>' % (self.base_url, public.url))
             # Private flatpage should not be in the sitemap
-            self.assertNotContains(response, '<loc>http://example.com%s</loc>' % private.url)
+            self.assertNotContains(response, '<loc>http://%s%s</loc>' % (self.base_url, private.url))
 
     def test_requestsite_sitemap(self):
         # Make sure hitting the flatpages sitemap without the sites framework
@@ -106,14 +110,14 @@ class SitemapTests(TestCase):
 </urlset>
 """ % date.today().strftime('%Y-%m-%d'))
 
-    def test_sitemap_get_urls_no_site_1(self):
-        """
-        Check we get ImproperlyConfigured if we don't pass a site object to
-        Sitemap.get_urls and no Site objects exist
-        """
-        Site._meta.installed = True
-        Site.objects.all().delete()
-        self.assertRaises(ImproperlyConfigured, Sitemap().get_urls)
+    if "django.contrib.sites" in settings.INSTALLED_APPS:
+        def test_sitemap_get_urls_no_site_1(self):
+            """
+            Check we get ImproperlyConfigured if we don't pass a site object to
+            Sitemap.get_urls and no Site objects exist
+            """
+            Site.objects.all().delete()
+            self.assertRaises(ImproperlyConfigured, Sitemap().get_urls)
 
     def test_sitemap_get_urls_no_site_2(self):
         """
@@ -121,6 +125,5 @@ class SitemapTests(TestCase):
         Sitemap.get_urls if Site objects exists, but the sites framework is not
         actually installed.
         """
-        Site.objects.get_current()
         Site._meta.installed = False
         self.assertRaises(ImproperlyConfigured, Sitemap().get_urls)