'Checks if current user can\'t manage course team'

def _assert_can_not_manage_users(self):

    self.assertFalse(self.page.has_add_button)
    for user in self.page.users:
        self.assertFalse(user.can_promote)
        self.assertFalse(user.can_demote)
        self.assertFalse(user.can_delete)
