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"""Tests for file text extraction."""
import tempfile
import unittest
from pathlib import Path
from converter.extractors import extract_text
class TxtExtractionTests(unittest.TestCase):
def _extract(self, data: bytes) -> str:
with tempfile.TemporaryDirectory() as tmp:
path = Path(tmp) / "book.txt"
path.write_bytes(data)
return extract_text(path)
def test_utf8(self):
self.assertEqual(self._extract("héllo wörld".encode("utf-8")), "héllo wörld")
def test_utf16_with_bom(self):
self.assertEqual(self._extract("héllo".encode("utf-16")), "héllo")
def test_cp1252(self):
self.assertEqual(self._extract("“quotes”".encode("cp1252")), "“quotes”")
def test_latin1_fallback(self):
# 0x81 is undefined in cp1252, forcing the latin-1 catch-all
self.assertEqual(self._extract(b"caf\x81"), "caf\x81")
def test_unsupported_format(self):
with tempfile.TemporaryDirectory() as tmp:
path = Path(tmp) / "book.xyz"
path.write_bytes(b"data")
with self.assertRaises(ValueError):
extract_text(path)
def _build_test_epub(path: Path) -> None:
from ebooklib import epub
book = epub.EpubBook()
book.set_identifier("test-id")
book.set_title("Test Book")
book.set_language("en")
chapter1 = epub.EpubHtml(title="One", file_name="chap1.xhtml", lang="en")
chapter1.content = "<html><body><p>First chapter text.</p></body></html>"
chapter2 = epub.EpubHtml(title="Two", file_name="chap2.xhtml", lang="en")
chapter2.content = "<html><body><p>Second chapter text.</p></body></html>"
book.add_item(chapter1)
book.add_item(chapter2)
book.toc = (chapter1, chapter2)
book.spine = ["nav", chapter1, chapter2]
book.add_item(epub.EpubNcx())
book.add_item(epub.EpubNav())
epub.write_epub(str(path), book)
class EpubExtractionTests(unittest.TestCase):
def setUp(self):
try:
import ebooklib # noqa: F401
except ImportError:
self.skipTest("ebooklib not installed")
def test_ebooklib_extraction(self):
# Regression test: the ebooklib path used to silently return "" due to
# isinstance(item, ebooklib.ITEM_DOCUMENT) (an int, not a class).
from converter.extractors import _extract_epub_ebooklib
with tempfile.TemporaryDirectory() as tmp:
path = Path(tmp) / "book.epub"
_build_test_epub(path)
text = _extract_epub_ebooklib(path)
self.assertIn("First chapter text.", text)
self.assertIn("Second chapter text.", text)
def test_epub_extraction_follows_spine_order(self):
with tempfile.TemporaryDirectory() as tmp:
path = Path(tmp) / "book.epub"
_build_test_epub(path)
text = extract_text(path)
self.assertIn("First chapter text.", text)
self.assertIn("Second chapter text.", text)
self.assertLess(text.index("First chapter text."),
text.index("Second chapter text."))
if __name__ == "__main__":
unittest.main()
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