diff --git a/djblets/testing/testcases.py b/djblets/testing/testcases.py
index e994f17ec4488273924d7dd08cca70c8ce0b96bf..d1ccdf01aff32655f69ece810d94116372ae48bf 100644
--- a/djblets/testing/testcases.py
+++ b/djblets/testing/testcases.py
@@ -34,6 +34,7 @@ import re
 import socket
 import sys
 import threading
+from contextlib import contextmanager
 from importlib import import_module
 
 from django.conf import settings
@@ -59,6 +60,8 @@ except ImportError:
 
     apps = None
 
+from djblets.siteconfig.models import SiteConfiguration
+
 
 class StubNodeList(Node):
     def __init__(self, default_text):
@@ -117,6 +120,40 @@ class TestCase(testcases.TestCase):
 
         return doc
 
+    @contextmanager
+    def siteconfig_settings(self, settings):
+        """Temporarily sets siteconfig settings for a test.
+
+        Subclasses should override this if they want to run a method like
+        :py:func:`~djblets.siteconfig.django_settings.apply_django_settings`
+        before and after each test.
+
+        Args:
+            settings (dict):
+                The new siteconfig settings to set.
+
+        Context:
+            The current site configuration will contain the new settings for
+            this test.
+        """
+        siteconfig = SiteConfiguration.objects.get_current()
+
+        old_settings = {}
+
+        for key, value in six.iteritems(settings):
+            old_settings[key] = siteconfig.get(key)
+            siteconfig.set(key, value)
+
+        siteconfig.save()
+
+        try:
+            yield
+        finally:
+            for key, value in six.iteritems(old_settings):
+                siteconfig.set(key, value)
+
+            siteconfig.save()
+
     def assertRaisesValidationError(self, expected_messages, *args, **kwargs):
         """Assert that a ValidationError is raised with the given message(s).