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108 lines
2.9 KiB
Python
108 lines
2.9 KiB
Python
# © 2017 James R. Barlow: github.com/jbarlow83
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#
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# This file is part of OCRmyPDF.
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#
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# OCRmyPDF is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# OCRmyPDF is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with OCRmyPDF. If not, see <http://www.gnu.org/licenses/>.
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import os
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from contextlib import contextmanager
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from os import fspath
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from pathlib import Path
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import pytest
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from ocrmypdf import pdfinfo
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from ocrmypdf.exceptions import MissingDependencyError
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from ocrmypdf.exec import tesseract
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# pylint: disable=no-member,w0621
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check_ocrmypdf = pytest.helpers.check_ocrmypdf
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run_ocrmypdf = pytest.helpers.run_ocrmypdf
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spoof = pytest.helpers.spoof
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def test_tesseract_v4():
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assert tesseract.v4()
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def test_pagesize_consistency_tess4(resources, outpdf):
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from math import isclose
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infile = resources / 'linn.pdf'
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before_dims = pytest.helpers.first_page_dimensions(infile)
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check_ocrmypdf(
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infile,
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outpdf,
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'--pdf-renderer',
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'sandwich',
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'--clean' if pytest.helpers.have_unpaper() else None,
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'--deskew',
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'--remove-background',
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'--clean-final' if pytest.helpers.have_unpaper() else None,
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)
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after_dims = pytest.helpers.first_page_dimensions(outpdf)
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assert isclose(before_dims[0], after_dims[0])
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assert isclose(before_dims[1], after_dims[1])
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@pytest.mark.parametrize('basename', ['graph_ocred.pdf', 'cardinal.pdf'])
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def test_skip_pages_does_not_replicate(resources, basename, outdir):
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infile = resources / basename
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outpdf = outdir / basename
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check_ocrmypdf(
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infile,
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outpdf,
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'--pdf-renderer',
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'sandwich',
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'--force-ocr',
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'--tesseract-timeout',
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'0',
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)
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info_in = pdfinfo.PdfInfo(infile)
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info = pdfinfo.PdfInfo(outpdf)
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for page in info:
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assert len(page.images) == 1, "skipped page was replicated"
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for n in range(len(info_in)):
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assert info[n].width_inches == info_in[n].width_inches
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def test_content_preservation(resources, outpdf):
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infile = resources / 'masks.pdf'
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check_ocrmypdf(
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infile, outpdf, '--pdf-renderer', 'sandwich', '--tesseract-timeout', '0'
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)
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info = pdfinfo.PdfInfo(outpdf)
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page = info[0]
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assert len(page.images) > 1, "masks were rasterized"
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def test_no_languages(tmp_path):
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env = os.environ.copy()
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(tmp_path / 'tessdata').mkdir()
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env['TESSDATA_PREFIX'] = fspath(tmp_path)
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with pytest.raises(MissingDependencyError):
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tesseract.languages(tesseract_env=env)
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