def METHOD_NAME(session: dict, cookie_session_backend: ClientSideSessionBackend) -> None:
    ciphertext = cookie_session_backend.dump_data(session)
    assert isinstance(ciphertext, list)
    for text in ciphertext:
        assert len(text) <= CHUNK_SIZE
    plain_text = cookie_session_backend.load_data(ciphertext)
    assert plain_text == session