'AdminSite.get_action() returns an action even if it\'s disabled.'

def test_get_action(self):

    action_name = 'delete_selected'
    self.assertEqual(self.site.get_action(action_name), delete_selected)
    self.site.disable_action(action_name)
    self.assertEqual(self.site.get_action(action_name), delete_selected)
