diff -r b233cc448bdd -r 8ca3ee849bee devtools/httptest.py
--- a/devtools/httptest.py	Thu Sep 23 10:46:38 2010 +0200
+++ b/devtools/httptest.py	Thu Sep 23 10:46:59 2010 +0200
@@ -141,6 +141,7 @@
                                 (user, passwd))
         assert response.status == httplib.SEE_OTHER, response.status
         self._ident_cookie = response.getheader('Set-Cookie')
+        assert self._ident_cookie
         return True
 
     def web_logout(self, user='admin', pwd=None):