mirror of
https://github.com/DRYTRIX/TimeTracker.git
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Dries Peeters
2e1c18a345
Switch embedded invoice PDFs to Factur-X CII payloads and tighten the PDF/A-3 and AS4 handling so exports better match the standards they advertise. Document the experimental native Peppol transport path and cover the new validation and embedding behavior with focused tests.
144 lines
4.5 KiB
Python
144 lines
4.5 KiB
Python
"""Tests for PDF/A-3 conversion with ICC profile embedding."""
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import io
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import pytest
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try:
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import pikepdf
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except ImportError:
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pikepdf = None
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@pytest.mark.unit
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@pytest.mark.skipif(not pikepdf, reason="pikepdf not installed")
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def test_convert_to_pdfa3_adds_identification(app):
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"""PDF/A-3 conversion adds XMP pdfaid identification."""
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from app.utils.pdfa3 import convert_to_pdfa3
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pdf = pikepdf.Pdf.new()
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pdf.add_blank_page(page_size=(595, 842))
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buf = io.BytesIO()
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pdf.save(buf)
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pdf.close()
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pdf_bytes = buf.getvalue()
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out_bytes, err = convert_to_pdfa3(pdf_bytes)
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assert err is None
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assert len(out_bytes) >= len(pdf_bytes)
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result = pikepdf.open(io.BytesIO(out_bytes))
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assert result.Root.get("/Metadata") is not None
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xmp = result.Root.Metadata.read_bytes().decode("utf-8", errors="replace")
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assert "pdfaid:part" in xmp
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assert ">3<" in xmp or "3</pdfaid:part>" in xmp
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assert "pdfaid:conformance" in xmp
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result.close()
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@pytest.mark.unit
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@pytest.mark.skipif(not pikepdf, reason="pikepdf not installed")
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def test_convert_to_pdfa3_adds_output_intent(app):
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"""PDF/A-3 conversion adds an OutputIntent with ICC profile reference."""
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from app.utils.pdfa3 import convert_to_pdfa3
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pdf = pikepdf.Pdf.new()
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pdf.add_blank_page(page_size=(595, 842))
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buf = io.BytesIO()
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pdf.save(buf)
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pdf.close()
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pdf_bytes = buf.getvalue()
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out_bytes, err = convert_to_pdfa3(pdf_bytes)
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assert err is None
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result = pikepdf.open(io.BytesIO(out_bytes))
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intents = result.Root.get("/OutputIntents")
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assert intents is not None
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assert len(intents) > 0
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intent = intents[0]
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assert str(intent.get("/S")) == "/GTS_PDFA1"
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# Check that DestOutputProfile (ICC stream) is present
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dest_profile = intent.get("/DestOutputProfile")
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assert dest_profile is not None, "OutputIntent should contain an embedded ICC profile"
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result.close()
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@pytest.mark.unit
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@pytest.mark.skipif(not pikepdf, reason="pikepdf not installed")
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def test_convert_to_pdfa3_icc_profile_is_valid(app):
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"""The embedded ICC profile has the correct signature and structure."""
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from app.utils.pdfa3 import convert_to_pdfa3
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import struct
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pdf = pikepdf.Pdf.new()
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pdf.add_blank_page(page_size=(595, 842))
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buf = io.BytesIO()
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pdf.save(buf)
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pdf.close()
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pdf_bytes = buf.getvalue()
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out_bytes, err = convert_to_pdfa3(pdf_bytes)
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assert err is None
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result = pikepdf.open(io.BytesIO(out_bytes))
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intent = result.Root.OutputIntents[0]
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icc_stream = intent.DestOutputProfile
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icc_data = icc_stream.read_bytes()
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result.close()
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# ICC profile must be at least 128 bytes (header size)
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assert len(icc_data) >= 128
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# Profile size in header must match actual size
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profile_size = struct.unpack(">I", icc_data[:4])[0]
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assert profile_size == len(icc_data)
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# Signature must be 'acsp' at offset 36
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assert icc_data[36:40] == b"acsp"
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# Color space must be 'RGB '
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assert icc_data[16:20] == b"RGB "
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@pytest.mark.unit
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@pytest.mark.skipif(not pikepdf, reason="pikepdf not installed")
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def test_convert_to_pdfa3_preserves_existing_xmp(app):
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"""Conversion preserves existing XMP metadata while adding PDF/A-3 identification."""
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from app.utils.pdfa3 import convert_to_pdfa3
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pdf = pikepdf.Pdf.new()
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pdf.add_blank_page(page_size=(595, 842))
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existing_xmp = (
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'<?xpacket begin="\xef\xbb\xbf" id="W5M0MpCehiHzreSzNTczkc9d"?>'
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'<x:xmpmeta xmlns:x="adobe:ns:meta/">'
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'<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">'
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'<rdf:Description rdf:about="" xmlns:dc="http://purl.org/dc/elements/1.1/">'
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"<dc:title>Test Invoice</dc:title>"
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"</rdf:Description>"
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"</rdf:RDF></x:xmpmeta>"
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'<?xpacket end="w"?>'
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)
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pdf.Root.Metadata = pdf.make_stream(existing_xmp.encode("utf-8"))
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buf = io.BytesIO()
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pdf.save(buf)
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pdf.close()
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out_bytes, err = convert_to_pdfa3(buf.getvalue())
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assert err is None
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result = pikepdf.open(io.BytesIO(out_bytes))
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xmp = result.Root.Metadata.read_bytes().decode("utf-8", errors="replace")
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result.close()
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assert "pdfaid:part" in xmp
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assert "dc:title" in xmp, "Existing XMP metadata should be preserved"
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@pytest.mark.unit
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def test_convert_to_pdfa3_returns_error_on_invalid_pdf(app):
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from app.utils.pdfa3 import convert_to_pdfa3
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out_bytes, err = convert_to_pdfa3(b"not a pdf")
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assert err is not None
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assert out_bytes == b"not a pdf"
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