New logout_bare() for shell logout and refactor test using it

gluon/tests/test_tools.py

@@ -250,7 +250,7 @@ class TestAuth(unittest.TestCase):
             self.assertTrue('name="_formkey"' in html_form)
 
         # NOTE: Not sure it is the proper way to logout_bare() as there is not methods for that and auth.logout() failed
-        self.auth.user = None
+        self.auth.logout_bare()
         # self.assertTrue(self.auth.is_logged_in())
 
         for f in ['logout', 'verify_email', 'reset_password',

gluon/tools.py

@@ -3251,12 +3251,16 @@ class Auth(object):
                 next = cas.logout_url(next)
 
         current.session.auth = None
+        self.user = None
         if self.settings.renew_session_onlogout:
             current.session.renew(clear_session=not self.settings.keep_session_onlogout)
         current.session.flash = self.messages.logged_out
         if next is not None:
             redirect(next)
 
+    def logout_bare(self):
+        self.logout(next=None, onlogout=None, log=None)
+
     def register(self,
                  next=DEFAULT,
                  onvalidation=DEFAULT,