import pytest

from central.app.datasets.ncm import parse_ncm_payload


def test_parser_accepts_verified_siscomex_payload_shape():
    payload = b'{"Data_Ultima_Atualizacao_NCM":"Vigente em 17/09/2026","Ato":"Resolucao Gecex 926/2026","Nomenclaturas":[{"Codigo":"08043000","Descricao":"Abacaxis.","Data_Inicio":"01/04/2022","Data_Fim":"31/12/9999"}]}'

    parsed = parse_ncm_payload(payload)

    assert parsed.version == "Vigente em 17/09/2026"
    assert parsed.entries[0].code == "08043000"


def test_parser_rejects_unknown_payload_shape():
    with pytest.raises(ValueError, match="Nomenclaturas"):
        parse_ncm_payload(b'{"items": []}')