def create_user(app, username="user"):
    """create a user with username=pw and email=<username>@example.org"""
    return app.module_map['userbase'].register({
        'username' : username,
        'password' : username,
        'fullname' : username,
        'email' : "%s@example.com" %username,
    }, force = True, create_pw = False)