def METHOD_NAME(self):
    Session = scoped_session(sa.orm.sessionmaker())
    s = Session()  # noqa
    assert_raises_message(
        sa.exc.InvalidRequestError,
        "Scoped session is already present",
        Session,
        bind=testing.db,
    )
    assert_warns_message(
        sa.exc.SAWarning,
        "At least one scoped session is already present. ",
        Session.configure,
        bind=testing.db,
    )