m3ta-chiron
ccf8ad67fa
- test_fixture_sweep: extract+validate every fixture PDF on every run; known extractor/validator gaps are catalogued explicitly and the sweep fails on any deviation from that catalogue - tests/fixtures/real/: anonymized XML from real production invoices that revealed bugs (verified to contain no real-world data); first entry locks in the FC-tax-number/basis-quantity/spaced-VAT-ID regressions - CI workflow: uv sync --frozen from lockfile + pytest + docker build
85 lines
3.0 KiB
Python
85 lines
3.0 KiB
Python
"""Regression tests from real-world invoices (anonymized).
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Every test in this module originated from a production bug. When a new real
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invoice reveals a service bug: anonymize the invoice XML into
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tests/fixtures/real/, verify it contains no real-world data, and add a test
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here that locks in the correct behavior.
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"""
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from io import BytesIO
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from pathlib import Path
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import pytest
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from pypdf import PdfWriter
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from src.extractor import extract_zugferd
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from src.models import ValidateRequest
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from src.validator import validate_invoice
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REAL_FIXTURES = Path(__file__).parent / "fixtures" / "real"
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ALL_CHECKS = ["pflichtfelder", "betraege", "ustid", "pdf_abgleich"]
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def _pdf_with_attachment(xml_bytes: bytes) -> bytes:
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"""Wrap invoice XML in a minimal PDF (no visual content)."""
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writer = PdfWriter()
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writer.add_blank_page(width=72, height=72)
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writer.add_attachment("factur-x.xml", xml_bytes)
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output = BytesIO()
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writer.write(output)
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return output.getvalue()
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class TestFcTaxNumberBasisQuantityInvoice:
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"""Anonymized EXTENDED invoice: FC-only tax registration (no VAT ID),
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unit price with basis quantity 100, spaced buyer VAT ID, seller email
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in DefinedTradeContact.
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Regressions locked in (found 2026-09 on a real workshop invoice):
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supplier tax_number never extracted, unit price off by factor 100,
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spaced VAT ID rejected as invalid format, contact email dropped.
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"""
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XML_PATH = REAL_FIXTURES / "extended_fc_steuernummer_basisqty.xml"
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def test_extraction(self) -> None:
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pdf_bytes = _pdf_with_attachment(self.XML_PATH.read_bytes())
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result = extract_zugferd(pdf_bytes)
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assert result.is_zugferd is True
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data = result.xml_data
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assert data.invoice_number == "4711"
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assert data.supplier.tax_number == "1112223334444"
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assert data.supplier.vat_id is None
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assert data.supplier.email == "rechnung@beispielwerkstatt.example"
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assert data.buyer.vat_id == "DE 123 456 789"
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assert len(data.line_items) == 2
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first, second = data.line_items
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assert first.quantity == 140
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assert first.unit_price == pytest.approx(0.7585)
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assert first.line_total == pytest.approx(106.19)
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assert second.quantity == 50
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assert second.unit_price == pytest.approx(0.7585)
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assert second.line_total == pytest.approx(37.93)
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assert data.totals.net == pytest.approx(144.12)
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assert data.totals.vat_total == pytest.approx(10.09)
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assert data.totals.gross == pytest.approx(154.21)
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def test_validation_all_checks_pass(self) -> None:
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pdf_bytes = _pdf_with_attachment(self.XML_PATH.read_bytes())
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result = extract_zugferd(pdf_bytes)
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request = ValidateRequest(
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xml_data=result.xml_data.model_dump(),
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pdf_text=result.pdf_text,
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checks=ALL_CHECKS,
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)
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validation = validate_invoice(request)
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assert validation.is_valid is True
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assert validation.errors == []
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