Mercurial > hgrepos > Python2 > PyMuPDF

annotate tests/test_tesseract.py @ 1:1d09e1dec1d9 upstream

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ADD: PyMuPDF v1.26.4: the original sdist. It does not yet contain MuPDF. This normally will be downloaded when building PyMuPDF.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:37:51 +0200
parents
children a6bc019ac0b2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1
1d09e1dec1d9 ADD: PyMuPDF v1.26.4: the original sdist.
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parents:
diff changeset
1 import os
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2 import platform
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3 import textwrap
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4
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5 import pymupdf
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6
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7 def test_tesseract():
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8 '''
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9 This checks that MuPDF has been built with tesseract support.
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10
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11 By default we don't supply a valid `tessdata` directory, and just assert
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12 that attempting to use Tesseract raises the expected error (which checks
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13 that MuPDF is built with Tesseract support).
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14
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15 But if TESSDATA_PREFIX is set in the environment, we assert that
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16 FzPage.get_textpage_ocr() succeeds.
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17 '''
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18 path = os.path.abspath( f'{__file__}/../resources/2.pdf')
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19 doc = pymupdf.open( path)
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20 page = doc[5]
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21 if hasattr(pymupdf, 'mupdf'):
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22 # rebased.
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23 if pymupdf.mupdf_version_tuple < (1, 25, 4):
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24 tail = 'OCR initialisation failed'
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25 else:
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26 tail = 'Tesseract language initialisation failed'
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27 e_expected = f'code=3: {tail}'
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28 if platform.system() == 'OpenBSD':
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29 # 2023-12-12: For some reason the SWIG catch code only catches
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30 # the exception as FzErrorBase.
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31 e_expected_type = pymupdf.mupdf.FzErrorBase
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32 print(f'OpenBSD workaround - expecting FzErrorBase, not FzErrorLibrary.')
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33 else:
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34 e_expected_type = pymupdf.mupdf.FzErrorLibrary
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35 else:
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36 # classic.
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37 e_expected = 'OCR initialisation failed'
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38 e_expected_type = None
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39 tessdata_prefix = os.environ.get('TESSDATA_PREFIX')
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40 if tessdata_prefix:
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41 tp = page.get_textpage_ocr(full=True)
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42 print(f'test_tesseract(): page.get_textpage_ocr() succeeded')
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43 else:
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44 try:
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45 tp = page.get_textpage_ocr(full=True, tessdata='/foo/bar')
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46 except Exception as e:
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47 e_text = str(e)
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48 print(f'Received exception as expected.')
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49 print(f'{type(e)=}')
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50 print(f'{e_text=}')
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51 assert e_text == e_expected, f'Unexpected exception: {e_text!r}'
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52 if e_expected_type:
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53 print(f'{e_expected_type=}')
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54 assert type(e) == e_expected_type, f'{type(e)=} != {e_expected_type=}.'
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55 else:
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56 assert 0, f'Expected exception {e_expected!r}'
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57 rebased = hasattr(pymupdf, 'mupdf')
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58 if rebased:
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59 wt = pymupdf.TOOLS.mupdf_warnings()
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60 if pymupdf.mupdf_version_tuple < (1, 25, 4):
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61 assert wt == (
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62 'UNHANDLED EXCEPTION!\n'
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63 'library error: Tesseract initialisation failed'
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64 )
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65 else:
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66 assert not wt
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67
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68
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69 def test_3842b():
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70 # Check Tesseract failure when given a bogus languages.
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71 #
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72 # Note that Tesseract seems to output its own diagnostics.
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73 #
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74 path = os.path.normpath(f'{__file__}/../../tests/resources/test_3842.pdf')
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75 with pymupdf.open(path) as document:
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76 page = document[6]
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77 try:
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78 partial_tp = page.get_textpage_ocr(flags=0, full=False, language='qwerty')
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79 except Exception as e:
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80 print(f'test_3842b(): received exception: {e}')
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81 if 'No tessdata specified and Tesseract is not installed' in str(e):
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82 pass
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83 else:
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84 if pymupdf.mupdf_version_tuple < (1, 25, 4):
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85 assert 'OCR initialisation failed' in str(e)
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86 wt = pymupdf.TOOLS.mupdf_warnings()
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87 assert wt == 'UNHANDLED EXCEPTION!\nlibrary error: Tesseract initialisation failed\nUNHANDLED EXCEPTION!\nlibrary error: Tesseract initialisation failed', \
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88 f'Unexpected {wt=}'
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89 else:
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90 assert 'Tesseract language initialisation failed' in str(e)
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91
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92
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93 def test_3842():
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94 path = os.path.normpath(f'{__file__}/../../tests/resources/test_3842.pdf')
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95 with pymupdf.open(path) as document:
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96 page = document[6]
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97 try:
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98 partial_tp = page.get_textpage_ocr(flags=0, full=False)
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99 except Exception as e:
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100 print(f'test_3842(): received exception: {e}', flush=1)
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101 if 'No tessdata specified and Tesseract is not installed' in str(e):
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102 pass
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103 elif 'Tesseract language initialisation failed' in str(e):
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104 pass
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105 else:
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106 assert 0, f'Unexpected exception text: {str(e)=}'
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107 else:
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108 text = page.get_text(textpage=partial_tp)
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109 print()
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110 print(text)
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111 print(f'text:\n{text!r}')
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112
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113 # 2024-11-29: This is the current incorrect output. We use
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114 # underscores for lines containing entirely whitespace (which
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115 # textwrap.dedent() unfortunately replaces with empty lines).
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116 text_expected = textwrap.dedent('''
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117 NIST SP 800-223
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118 _
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119 High-Performance Computing Security
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120 February 2024
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121 _
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122 __
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123 iii
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124 Table of Contents
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125 1. Introduction ...................................................................................................................................1
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126 2. HPC System Reference Architecture and Main Components ............................................................2
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127 2.1.1. Components of the High-Performance Computing Zone ............................................................. 3
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128 2.1.2. Components of the Data Storage Zone ........................................................................................ 4
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129 2.1.3. Parallel File System ....................................................................................................................... 4
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130 2.1.4. Archival and Campaign Storage .................................................................................................... 5
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131 2.1.5. Burst Buffer .................................................................................................................................. 5
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132 2.1.6. Components of the Access Zone .................................................................................................. 6
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133 2.1.7. Components of the Management Zone ....................................................................................... 6
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134 2.1.8. General Architecture and Characteristics .................................................................................... 6
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135 2.1.9. Basic Services ................................................................................................................................ 7
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136 2.1.10. Configuration Management ....................................................................................................... 7
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137 2.1.11. HPC Scheduler and Workflow Management .............................................................................. 7
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138 2.1.12. HPC Software .............................................................................................................................. 8
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139 2.1.13. User Software ............................................................................................................................. 8
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140 2.1.14. Site-Provided Software and Vendor Software ........................................................................... 8
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141 2.1.15. Containerized Software in HPC .................................................................................................. 9
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142 3. HPC Threat Analysis...................................................................................................................... 10
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143 3.2.1. Access Zone Threats ................................................................................................................... 11
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144 3.2.2. Management Zone Threats ........................................................................................................ 11
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145 3.2.3. High-Performance Computing Zone Threats .............................................................................. 12
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146 3.2.4. Data Storage Zone Threats ......................................................................................................... 12
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147 4. HPC Security Posture, Challenges, and Recommendations ............................................................. 14
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148 5. Conclusions .................................................................................................................................. 19
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149 ''',
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150 )[1:].replace('_', ' ')
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151 print(f'text_expected:\n{text_expected!r}')
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152 assert text == text_expected