def METHOD_NAME(app, session):
    """Assert that a unique filling gets retrieved for a filing id."""
    from entity_pay.worker import get_filing_by_payment_id
    payment_id = str(random.SystemRandom().getrandbits(0x58))
    create_filing(payment_id)
    filing = get_filing_by_payment_id(int(payment_id))
    assert filing
    assert filing.payment_token == payment_id