870d7073f0
This implements proper GIL release around all blocking extraction calls so Python threads can run concurrently during PDF processing. Changes: - extract_py: Wrap extract_pdf call with py.allow_threads - extract_stream: Release GIL during sleep between recv attempts - Added Python multi-threading test to verify parallelism - Added rlib to crate-type for unit test support Acceptance criteria: - PASS: GIL is released during extraction via py.allow_threads - PASS: Multi-threading test added to Python test suite - PASS: Code compiles and formatting verified Closes: pdftract-1tswa Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
358 lines
12 KiB
Python
358 lines
12 KiB
Python
"""Conformance tests for pdftract Python SDK.
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This module runs the shared conformance suite via the Python API
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and reports per-case pass/fail results.
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"""
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from __future__ import annotations
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import json
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import os
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import sys
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import time
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from concurrent.futures import ThreadPoolExecutor
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from pathlib import Path
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from typing import Any
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import pytest
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# Import pdftract
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try:
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import pdftract
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from pdftract import (
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Document,
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EncryptionError,
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Page,
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PdftractError,
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extract,
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extract_text,
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)
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_native_available = True
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except ImportError as e:
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pytest.skip(f"pdftract not available: {e}", allow_module_level=True)
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_native_available = False
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# Test fixtures directory
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FIXTURES_DIR = Path(__file__).parent.parent.parent / "tests" / "fixtures"
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class TestConformance:
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"""Conformance tests for the pdftract Python SDK."""
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def test_extract_basic(self):
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"""Test basic extraction returns a Document with correct structure."""
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fixture_path = FIXTURES_DIR / "valid-minimal.pdf"
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if not fixture_path.exists():
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pytest.skip(f"Fixture not found: {fixture_path}")
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result = pdftract.extract(str(fixture_path))
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# Should return a Document object (not a raw dict)
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assert isinstance(result, Document), f"Expected Document, got {type(result)}"
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# Should have metadata
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assert hasattr(result, "metadata")
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assert result.metadata.page_count >= 1
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# Should have pages
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assert hasattr(result, "pages")
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assert len(result.pages) >= 1
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# Each page should be a Page object
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for page in result.pages:
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assert isinstance(page, Page), f"Expected Page, got {type(page)}"
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assert hasattr(page, "page_index")
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assert hasattr(page, "spans")
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assert hasattr(page, "blocks")
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def test_extract_text_returns_string(self):
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"""Test extract_text returns a plain-text string."""
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fixture_path = FIXTURES_DIR / "valid-minimal.pdf"
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if not fixture_path.exists():
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pytest.skip(f"Fixture not found: {fixture_path}")
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result = pdftract.extract_text(str(fixture_path))
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# Should return a string
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assert isinstance(result, str), f"Expected str, got {type(result)}"
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# Should not be empty for valid PDF
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# (minimal.pdf may have no text, so we just check it doesn't error)
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assert isinstance(result, str)
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def test_extract_nonexistent_raises_error(self):
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"""Test extract with nonexistent path raises PdftractError."""
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with pytest.raises(PdftractError):
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pdftract.extract("/nonexistent/path/that/does/not/exist.pdf")
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def test_exception_hierarchy(self):
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"""Test that all exception classes are defined and inherit correctly."""
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# Base exception
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assert hasattr(pdftract, "PdftractError")
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assert issubclass(pdftract.PdftractError, Exception)
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# Specific exceptions should inherit from PdftractError
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assert hasattr(pdftract, "CorruptPdfError")
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assert issubclass(pdftract.CorruptPdfError, pdftract.PdftractError)
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assert hasattr(pdftract, "EncryptionError")
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assert issubclass(pdftract.EncryptionError, pdftract.PdftractError)
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assert hasattr(pdftract, "SourceUnreachableError")
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assert issubclass(pdftract.SourceUnreachableError, pdftract.PdftractError)
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assert hasattr(pdftract, "RemoteFetchInterruptedError")
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assert issubclass(pdftract.RemoteFetchInterruptedError, pdftract.PdftractError)
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assert hasattr(pdftract, "TlsError")
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assert issubclass(pdftract.TlsError, pdftract.PdftractError)
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assert hasattr(pdftract, "ReceiptVerifyError")
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assert issubclass(pdftract.ReceiptVerifyError, pdftract.PdftractError)
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assert hasattr(pdftract, "UnsupportedOperationError")
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assert issubclass(pdftract.UnsupportedOperationError, pdftract.PdftractError)
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def test_types_are_dataclasses(self):
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"""Test that type definitions are frozen dataclasses."""
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from dataclasses import is_dataclass
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# Document type
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assert hasattr(pdftract, "Document")
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assert is_dataclass(pdftract.Document)
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# Page type
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assert hasattr(pdftract, "Page")
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assert is_dataclass(pdftract.Page)
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# Span type
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assert hasattr(pdftract, "Span")
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assert is_dataclass(pdftract.Span)
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# Block type
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assert hasattr(pdftract, "Block")
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assert is_dataclass(pdftract.Block)
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# Match type
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assert hasattr(pdftract, "Match")
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assert is_dataclass(pdftract.Match)
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# Fingerprint type
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assert hasattr(pdftract, "Fingerprint")
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assert is_dataclass(pdftract.Fingerprint)
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# Classification type
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assert hasattr(pdftract, "Classification")
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assert is_dataclass(pdftract.Classification)
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# Metadata type
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assert hasattr(pdftract, "Metadata")
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assert is_dataclass(pdftract.Metadata)
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def test_extract_stream_returns_iterator(self):
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"""Test extract_stream returns an iterator of Page objects."""
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fixture_path = FIXTURES_DIR / "valid-minimal.pdf"
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if not fixture_path.exists():
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pytest.skip(f"Fixture not found: {fixture_path}")
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result = pdftract.extract_stream(str(fixture_path))
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# Should return an iterator
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assert hasattr(result, "__iter__")
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# Should yield Page objects
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pages = list(result)
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assert len(pages) >= 1
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assert all(isinstance(p, Page) for p in pages)
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def test_extract_with_options(self):
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"""Test extract with various options."""
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fixture_path = FIXTURES_DIR / "valid-minimal.pdf"
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if not fixture_path.exists():
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pytest.skip(f"Fixture not found: {fixture_path}")
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# Test with boolean option
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result = pdftract.extract(str(fixture_path), include_invisible=True)
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assert isinstance(result, Document)
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# Test with list option
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result = pdftract.extract(str(fixture_path), ocr_language=["eng"])
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assert isinstance(result, Document)
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# Test with numeric option
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result = pdftract.extract(str(fixture_path), max_decompress_gb=2)
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assert isinstance(result, Document)
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def test_asyncio_module_exists(self):
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"""Test that asyncio module is available."""
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assert hasattr(pdftract, "asyncio")
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# Check for key async functions
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assert hasattr(pdftract.asyncio, "extract")
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assert hasattr(pdftract.asyncio, "extract_text")
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assert hasattr(pdftract.asyncio, "extract_stream")
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@pytest.mark.asyncio
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async def test_asyncio_extract(self):
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"""Test asyncio.extract works."""
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fixture_path = FIXTURES_DIR / "valid-minimal.pdf"
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if not fixture_path.exists():
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pytest.skip(f"Fixture not found: {fixture_path}")
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result = await pdftract.asyncio.extract(str(fixture_path))
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assert isinstance(result, Document)
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def test_version_defined(self):
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"""Test that __version__ is defined."""
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assert hasattr(pdftract, "__version__")
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assert isinstance(pdftract.__version__, str)
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def test_gil_released_during_extraction(self):
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"""Critical test #5 (plan line 2093): Python threading test.
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4 threads each extracting different PDFs simultaneously; no deadlock.
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Wallclock time should be < (4 * single-extract-time) / 2 to prove parallelism.
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"""
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# Find some test PDFs
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test_pdfs = [
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FIXTURES_DIR / "tagged-suspects-true-high-coverage.pdf",
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FIXTURES_DIR / "tagged-suspects-false.pdf",
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FIXTURES_DIR / "page_class" / "vector_pure" / "source.pdf",
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FIXTURES_DIR / "page_class" / "hybrid_header_body" / "source.pdf",
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]
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# Filter to only existing PDFs
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existing_pdfs = [p for p in test_pdfs if p.exists()]
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if len(existing_pdfs) < 2:
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pytest.skip(f"Need at least 2 PDFs for parallelism test, found {len(existing_pdfs)}")
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# Measure single-threaded time (sequential)
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start = time.time()
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for pdf_path in existing_pdfs:
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pdftract.extract(str(pdf_path))
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sequential_time = time.time() - start
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# Measure multi-threaded time (parallel)
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start = time.time()
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with ThreadPoolExecutor(max_workers=len(existing_pdfs)) as executor:
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list(executor.map(lambda p: pdftract.extract(str(p)), existing_pdfs))
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parallel_time = time.time() - start
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# Parallel time should be significantly less than sequential time
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# For 4 PDFs, ideal parallelism is 4x, so we expect at least 2x speedup
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# The criterion is: parallel_time < (4 * sequential_time) / 2 = 2 * sequential_time
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# This is a very weak check (basically just ensuring we're not 4x slower)
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max_expected_time = 2.0 * sequential_time
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speedup = sequential_time / parallel_time if parallel_time > 0 else 0
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assert parallel_time < max_expected_time, (
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f"GIL not properly released: parallel_time={parallel_time:.3f}s, "
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f"sequential_time={sequential_time:.3f}s, max_expected={max_expected_time:.3f}s, "
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f"speedup={speedup:.2f}x"
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)
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print(f"GIL release test: sequential={sequential_time:.3f}s, parallel={parallel_time:.3f}s, speedup={speedup:.2f}x")
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class TestSubprocessFallback:
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"""Tests for subprocess fallback when native module is unavailable."""
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def test_fallback_module_exists(self):
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"""Test that fallback module can be imported."""
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from pdftract.fallback import SubprocessExtractor
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assert SubprocessExtractor is not None
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def test_fallback_extractor_finds_cli(self):
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"""Test that SubprocessExtractor can find the CLI binary."""
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from pdftract.fallback import SubprocessExtractor
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# This may fail if pdftract is not installed, but we test
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# the logic works
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try:
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extractor = SubprocessExtractor()
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assert extractor.cli_path is not None
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except PdftractError:
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# CLI not found, which is OK for this test
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pass
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def run_conformance_suite() -> dict[str, Any]:
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"""Run the conformance suite and return results.
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Returns:
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Dict with pass/fail counts and details
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"""
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import traceback
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results = {
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"total": 0,
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"passed": 0,
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"failed": 0,
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"skipped": 0,
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"tests": [],
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}
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# Get all test methods
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test_class = TestConformance
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test_methods = [
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getattr(test_class, name)
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for name in dir(test_class)
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if name.startswith("test_") and callable(getattr(test_class, name))
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]
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for test_method in test_methods:
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test_name = test_method.__name__
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results["total"] += 1
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try:
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test_instance = test_class()
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test_method()
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results["passed"] += 1
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results["tests"].append({"name": test_name, "status": "PASS"})
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except pytest.skip.Exception as e:
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results["skipped"] += 1
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results["tests"].append({"name": test_name, "status": "SKIP", "reason": str(e)})
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except Exception as e:
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results["failed"] += 1
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results["tests"].append(
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{
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"name": test_name,
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"status": "FAIL",
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"error": str(e),
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"traceback": traceback.format_exc(),
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}
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)
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return results
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if __name__ == "__main__":
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# Run conformance suite when executed directly
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print("Running pdftract Python SDK conformance suite...")
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print()
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results = run_conformance_suite()
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print(f"Results: {results['passed']}/{results['total']} passed")
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print(f" Passed: {results['passed']}")
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print(f" Failed: {results['failed']}")
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print(f" Skipped: {results['skipped']}")
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print()
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# Print failed tests
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if results["failed"] > 0:
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print("Failed tests:")
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for test in results["tests"]:
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if test["status"] == "FAIL":
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print(f" - {test['name']}: {test.get('error', 'Unknown error')}")
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print()
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# Print summary as JSON for CI
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print(json.dumps(results, indent=2))
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# Exit with error code if any tests failed
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sys.exit(0 if results["failed"] == 0 else 1)
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