Index: tests/test-pokersite.py.in
===================================================================
--- tests/test-pokersite.py.in	(revision 5935)
+++ tests/test-pokersite.py.in	(working copy)
@@ -590,6 +590,14 @@
             self.site.memcache.delete(uid)
             self.assertEqual(False, session.checkExpired())
 
+      def test02_expireFromTwisted(self):
+            uid = 'uid'
+            session = self.site.makeSessionFromUid(uid)
+            self.site.memcache.set(uid, '0')
+            session.lastModified = 0
+            session.checkExpired()
+            session.checkExpired()
+
 class RequestTestCase(PokerSiteBase):
 
       def test01_name(self):