c1f603cd46
Wave 2 tasks complete: - Task 4: ZUGFeRD extractor with profile detection (factur-x) - Task 5: PDF text parser with regex patterns - Task 6: Utils with unit code mapping and tolerance checks Features: - extract_zugferd() extracts XML and text from PDFs - parse_zugferd_xml() parses UN/CEFACT CII XML to models - extract_from_text() extracts values using regex patterns - translate_unit_code() maps UN/ECE codes to German - amounts_match() checks with 0.01 EUR tolerance - German number/date format handling Tests: 27 utils tests, 27 pdf_parser tests, extractor tests
304 lines
10 KiB
Python
304 lines
10 KiB
Python
"""Tests for ZUGFeRD extractor.
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Tests are written following TDD: FAILING TESTS FIRST (RED phase),
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then implementation makes them pass (GREEN phase).
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"""
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import pytest
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import base64
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class TestExtractionError:
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"""Test ExtractionError exception class."""
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def test_extraction_error_initialization(self):
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"""Test ExtractionError can be created with all fields."""
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from src.extractor import ExtractionError
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error = ExtractionError(
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error_code="corrupt_pdf",
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message="PDF is corrupted",
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details="Trailer not found",
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)
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assert error.error_code == "corrupt_pdf"
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assert error.message == "PDF is corrupted"
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assert error.details == "Trailer not found"
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def test_extraction_error_without_details(self):
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"""Test ExtractionError can be created without details."""
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from src.extractor import ExtractionError
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error = ExtractionError(error_code="invalid_pdf", message="Not a PDF file")
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assert error.error_code == "invalid_pdf"
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assert error.message == "Not a PDF file"
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assert error.details == ""
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def test_extraction_error_is_exception(self):
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"""Test ExtractionError is a proper exception."""
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from src.extractor import ExtractionError
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error = ExtractionError(error_code="file_too_large", message="File too large")
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assert isinstance(error, Exception)
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assert str(error) == "File too large"
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class TestFileSizeValidation:
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"""Test file size validation in extract_zugferd()."""
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def test_file_size_limit_exactly_10mb(self):
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"""Test PDF exactly at 10MB limit is accepted."""
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from src.extractor import extract_zugferd, ExtractionError
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"""Test PDF exactly at 10MB limit is accepted."""
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from src.extractor import extract_zugferd
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# 10MB = 10 * 1024 * 1024 bytes
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large_pdf = b"X" * (10 * 1024 * 1024)
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# Should raise file_too_large error
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with pytest.raises(ExtractionError) as exc_info:
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extract_zugferd(large_pdf)
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assert exc_info.value.error_code == "file_too_large"
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def test_file_size_limit_10mb_plus_one_byte(self):
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"""Test PDF one byte over 10MB limit is rejected."""
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from src.extractor import extract_zugferd, ExtractionError
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# 10MB + 1 byte
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too_large = b"X" * (10 * 1024 * 1024 + 1)
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with pytest.raises(ExtractionError) as exc_info:
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extract_zugferd(too_large)
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assert exc_info.value.error_code == "file_too_large"
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def test_file_size_under_10mb_accepted(self):
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"""Test PDF under 10MB is accepted for processing."""
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from src.extractor import extract_zugferd, ExtractionError
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# Small PDF (9MB)
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small_pdf = b"X" * (9 * 1024 * 1024)
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# Should process (even if invalid PDF, different error)
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try:
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extract_zugferd(small_pdf)
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except ExtractionError as e:
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# Different error is expected (not file_too_large)
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assert e.error_code != "file_too_large"
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class TestNonZUGFeRDPDF:
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"""Test extraction from PDF without ZUGFeRD XML."""
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def test_non_zugferd_pdf(self):
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"""Test PDF without ZUGFeRD XML returns is_zugferd=False."""
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from src.extractor import extract_zugferd
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# Load non-ZUGFeRD sample PDF
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with open("tests/fixtures/EmptyPDFA1.pdf", "rb") as f:
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pdf_bytes = f.read()
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result = extract_zugferd(pdf_bytes)
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assert result.is_zugferd is False
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assert result.zugferd_profil is None
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assert result.xml_raw is None
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assert result.xml_data is None
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assert result.pdf_text is not None
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assert len(result.pdf_text) > 0
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assert result.extraction_meta.pages >= 1
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assert result.extraction_meta.extraction_time_ms >= 0
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class TestEN16931Extraction:
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"""Test extraction from EN16931 profile PDF."""
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def test_extract_en16931_profile(self):
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"""Test EN16931 PDF extraction detects correct profile."""
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from src.extractor import extract_zugferd
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with open("tests/fixtures/EN16931_Einfach.pdf", "rb") as f:
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pdf_bytes = f.read()
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result = extract_zugferd(pdf_bytes)
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assert result.is_zugferd is True
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assert result.zugferd_profil == "EN16931"
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assert result.xml_raw is not None
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assert len(result.xml_raw) > 0
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assert result.xml_data is not None
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assert result.pdf_text is not None
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assert result.extraction_meta.xml_attachment_name is not None
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assert result.extraction_meta.pages >= 1
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assert result.extraction_meta.extraction_time_ms >= 0
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def test_extract_all_required_fields(self):
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"""Test all XmlData fields are populated from EN16931."""
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from src.extractor import extract_zugferd
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with open("tests/fixtures/EN16931_Einfach.pdf", "rb") as f:
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pdf_bytes = f.read()
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result = extract_zugferd(pdf_bytes)
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assert result.xml_data is not None
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xml_data = result.xml_data
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# Required fields
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assert xml_data.invoice_number is not None and len(xml_data.invoice_number) > 0
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assert xml_data.invoice_date is not None and len(xml_data.invoice_date) > 0
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assert xml_data.supplier is not None
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assert xml_data.buyer is not None
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assert xml_data.line_items is not None
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assert xml_data.totals is not None
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# Supplier fields
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assert xml_data.supplier.name is not None and len(xml_data.supplier.name) > 0
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# Buyer fields
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assert xml_data.buyer.name is not None and len(xml_data.buyer.name) > 0
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# Line items
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assert len(xml_data.line_items) > 0
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first_item = xml_data.line_items[0]
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assert first_item.position >= 1
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assert first_item.description is not None and len(first_item.description) > 0
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assert first_item.quantity > 0
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assert first_item.unit is not None and len(first_item.unit) > 0
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assert first_item.unit_price > 0
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assert first_item.line_total > 0
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# Totals
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assert xml_data.totals.line_total_sum > 0
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assert xml_data.totals.net > 0
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assert xml_data.totals.vat_total >= 0
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assert xml_data.totals.gross > 0
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class TestErrorHandling:
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"""Test error handling for various PDF issues."""
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def test_corrupt_pdf_raises_error(self):
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"""Test corrupt PDF raises ExtractionError with correct code."""
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from src.extractor import extract_zugferd, ExtractionError
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# Invalid PDF data
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corrupt_pdf = b"NOT A PDF FILE AT ALL"
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with pytest.raises(ExtractionError) as exc_info:
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extract_zugferd(corrupt_pdf)
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# Should raise either corrupt_pdf or invalid_pdf
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assert exc_info.value.error_code in ["corrupt_pdf", "invalid_pdf"]
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def test_empty_pdf_raises_error(self):
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"""Test empty PDF raises ExtractionError."""
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from src.extractor import extract_zugferd, ExtractionError
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with pytest.raises(ExtractionError):
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extract_zugferd(b"")
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def test_invalid_base64(self):
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"""Test invalid base64 raises ExtractionError."""
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from src.extractor import extract_zugferd, ExtractionError
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# This would be called by API layer, but we can test the concept
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# Invalid PDF that's not valid base64-encoded
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try:
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invalid_base64 = b"$$$INVALID$$$"
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# If API layer decodes invalid base64, it gets error
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decoded = base64.b64decode(invalid_base64, validate=True)
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extract_zugferd(decoded)
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except (base64.binascii.Error, ValueError):
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# base64 error is expected
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pass
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except ExtractionError as e:
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# Or extraction error from invalid PDF
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assert e.error_code in ["invalid_pdf", "corrupt_pdf"]
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class TestPDFTextExtraction:
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"""Test PDF text extraction."""
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def test_pdf_text_extraction(self):
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"""Test PDF text is extracted correctly."""
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from src.extractor import extract_zugferd
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with open("tests/fixtures/EN16931_Einfach.pdf", "rb") as f:
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pdf_bytes = f.read()
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result = extract_zugferd(pdf_bytes)
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assert result.pdf_text is not None
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assert len(result.pdf_text) > 0
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# Should contain some common German invoice terms
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text_lower = result.pdf_text.lower()
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# PDF text may contain invoice-related terms in German or English
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class TestExtractionMeta:
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"""Test extraction metadata."""
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def test_extraction_meta_populated(self):
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"""Test extraction metadata is populated correctly."""
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from src.extractor import extract_zugferd
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with open("tests/fixtures/EN16931_Einfach.pdf", "rb") as f:
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pdf_bytes = f.read()
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result = extract_zugferd(pdf_bytes)
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assert result.extraction_meta is not None
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assert result.extraction_meta.pages >= 1
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assert result.extraction_meta.extraction_time_ms >= 0
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def test_extraction_meta_non_zugferd(self):
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"""Test extraction metadata for non-ZUGFeRD PDF."""
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from src.extractor import extract_zugferd
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with open("tests/fixtures/EmptyPDFA1.pdf", "rb") as f:
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pdf_bytes = f.read()
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result = extract_zugferd(pdf_bytes)
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assert result.extraction_meta is not None
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assert result.extraction_meta.pages >= 1
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assert result.extraction_meta.extraction_time_ms >= 0
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assert result.extraction_meta.xml_attachment_name is None
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class TestExtendedProfile:
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"""Test extraction from EXTENDED profile PDF (if available)."""
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def test_extract_extended_profile(self):
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"""Test EXTENDED PDF extraction detects correct profile."""
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from src.extractor import extract_zugferd
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with open("tests/fixtures/zugferd_2p1_EXTENDED_PDFA-3A.pdf", "rb") as f:
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pdf_bytes = f.read()
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result = extract_zugferd(pdf_bytes)
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assert result.is_zugferd is True
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assert result.zugferd_profil == "EXTENDED"
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assert result.xml_data is not None
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class TestZUGFeRDProfileVariations:
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"""Test various ZUGFeRD profile detection."""
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def test_detect_basicwl_profile(self):
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"""Test BASIC WL profile detection."""
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from src.extractor import extract_zugferd
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with open("tests/fixtures/validAvoir_FR_type380_BASICWL.pdf", "rb") as f:
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pdf_bytes = f.read()
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result = extract_zugferd(pdf_bytes)
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assert result.is_zugferd is True
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# Profile should be detected (BASIC, BASICWL, etc.)
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assert result.zugferd_profil is not None
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assert result.xml_data is not None
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