Mercurial > hgrepos > Python2 > PyMuPDF

annotate tests/test_pagedelete.py @ 43:202a1f38a622

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
FIX: New added code snippets did not yet account for the changed return values from "_fromto()"
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:15:08 +0200
parents 1d09e1dec1d9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1
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1 """
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2 ----------------------------------------------------
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3 This tests correct functioning of multi-page delete
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4 ----------------------------------------------------
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5 Create a PDF in memory with 100 pages with a unique text each.
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6 Also create a TOC with a bookmark per page.
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7 On every page after the first to-be-deleted page, also insert a link, which
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8 points to this page.
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9 The bookmark text equals the text on the page for easy verification.
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10
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11 Then delete some pages and verify:
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12 - the new TOC has empty items exactly for every deleted page
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13 - the remaining TOC items still point to the correct page
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14 - the document has no more links at all
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15 """
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16
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17 import os
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18
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19 import pymupdf
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20
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21 scriptdir = os.path.dirname(__file__)
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22 page_count = 100 # initial document length
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23 r = range(5, 35, 5) # contains page numbers we will delete
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24 # insert this link on pages after first deleted one
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25 link = {
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26 "from": pymupdf.Rect(100, 100, 120, 120),
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27 "kind": pymupdf.LINK_GOTO,
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28 "page": r[0],
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29 "to": pymupdf.Point(100, 100),
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30 }
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31
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32
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33 def test_deletion():
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34 # First prepare the document.
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35 doc = pymupdf.open()
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36 toc = []
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37 for i in range(page_count):
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38 page = doc.new_page() # make a page
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39 page.insert_text((100, 100), "%i" % i) # insert unique text
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40 if i > r[0]: # insert a link
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41 page.insert_link(link)
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42 toc.append([1, "%i" % i, i + 1]) # TOC bookmark to this page
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43
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44 doc.set_toc(toc) # insert the TOC
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45 assert doc.has_links() # check we did insert links
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46
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47 # Test page deletion.
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48 # Delete pages in range and verify result
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49 del doc[r]
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50 assert not doc.has_links() # verify all links have gone
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51 assert doc.page_count == page_count - len(r) # correct number deleted?
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52 toc_new = doc.get_toc() # this is the modified TOC
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53 # verify number of emptied items (have page number -1)
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54 assert len([item for item in toc_new if item[-1] == -1]) == len(r)
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55 # Deleted page numbers must correspond to TOC items with page number -1.
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56 for i in r:
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57 assert toc_new[i][-1] == -1
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58 # Remaining pages must be correctly pointed to by the non-empty TOC items
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59 for item in toc_new:
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60 pno = item[-1]
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61 if pno == -1: # one of the emptied items
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62 continue
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63 pno -= 1 # PDF page number
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64 text = doc[pno].get_text().replace("\n", "")
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65 # toc text must equal text on page
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66 assert text == item[1]
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67
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68 doc.delete_page(0) # just for the coverage stats
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69 del doc[5:10]
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70 doc.select(range(doc.page_count))
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71 doc.copy_page(0)
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72 doc.move_page(0)
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73 doc.fullcopy_page(0)
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74
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75
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76 def test_3094():
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77 path = os.path.abspath(f"{__file__}/../../tests/resources/test_2871.pdf")
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78 document = pymupdf.open(path)
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79 pnos = [i for i in range(0, document.page_count, 2)]
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80 document.delete_pages(pnos)
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81
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82
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83 def test_3150():
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84 """Assert correct functioning for problem file.
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85
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86 Implicitly also check use of new MuPDF function
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87 pdf_rearrange_pages() since version 1.23.9.
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88 """
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89 filename = os.path.join(scriptdir, "resources", "test-3150.pdf")
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90 pages = [3, 3, 3, 2, 3, 1, 0, 0]
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91 doc = pymupdf.open(filename)
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92 doc.select(pages)
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93 assert doc.page_count == len(pages)
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94
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95
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96 def test_4462():
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97 path0 = os.path.normpath(f'{__file__}/../../tests/resources/test_4462_0.pdf')
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98 path1 = os.path.normpath(f'{__file__}/../../tests/resources/test_4462_1.pdf')
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99 path2 = os.path.normpath(f'{__file__}/../../tests/resources/test_4462_2.pdf')
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100 with pymupdf.open() as document:
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101 document.new_page()
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102 document.new_page()
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103 document.new_page()
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104 document.new_page()
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105 document.save(path0)
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106 with pymupdf.open(path0) as document:
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107 assert len(document) == 4
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108 document.delete_page(-1)
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109 document.save(path1)
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110 with pymupdf.open(path1) as document:
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111 assert len(document) == 3
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112 document.delete_pages(-1)
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113 document.save(path2)
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114 with pymupdf.open(path2) as document:
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115 assert len(document) == 2