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img2pdf/src/tests/__init__.py
josch 251238b410 release version 0.2.0 - big rewrite and lots of new features 
- now Python3 only
 - pep8 compliant code
 - update my email to josch@mister-muffin.de
 - move from github to gitlab.mister-muffin.de/josch/img2pdf
 - use logging module
 - add extensive test suite
 - ability to read from standard input
 - pdf writer:
      - make more compatible with the interface of pdfrw module
      - print floats which equal to their integer conversion as integer
      - do not print trailing zeroes for floating point numbers
      - print more linebreaks
      - add binary string at beginning of PDF to indicate that the PDF
        contains binary data
      - handle datetime and unicode strings by using utf-16-be encoding
 - new options (see --help for more details):
      - --without-pdfrw
      - --imgsize
      - --border
      - --fit
      - --auto-orient
      - --viewer-panes
      - --viewer-initial-page
      - --viewer-magnification
      - --viewer-page-layout
      - --viewer-fit-window
      - --viewer-center-window
      - --viewer-fullscreen
 - remove short command line options for metadata arguments
2016-02-02 19:51:27 +01:00

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import unittest
import os
import img2pdf
import zlib
from PIL import Image
HERE = os.path.dirname(__file__)
# convert +set date:create +set date:modify -define png:exclude-chunk=time
# we define some variables so that the table below can be narrower
psl = (972, 504) # --pagesize landscape
psp = (504, 972) # --pagesize portrait
isl = (756, 324) # --imgsize landscape
isp = (324, 756) # --imgsize portrait
border = (162, 270) # --border
# there is no need to have test cases with the same images with inverted
# orientation (landscape/portrait) because --pagesize and --imgsize are
# already inverted
im1 = (864, 288) # imgpx #1 => 648x216
im2 = (1152, 576) # imgpx #2 => 864x432
# shortcuts for fit modes
f_into = img2pdf.FitMode.into
f_fill = img2pdf.FitMode.fill
f_exact = img2pdf.FitMode.exact
f_shrink = img2pdf.FitMode.shrink
f_enlarge = img2pdf.FitMode.enlarge
layout_test_cases = [
# psp=972x504, psl=504x972, isl=756x324, isp=324x756, border=162:270
# --pagesize --border -a pagepdf imgpdf
# --imgsize --fit
(None, None, None, f_into, 0, (648, 216), (648, 216), # 000
(864, 432), (864, 432)),
(None, None, None, f_into, 1, (648, 216), (648, 216), # 001
(864, 432), (864, 432)),
(None, None, None, f_fill, 0, (648, 216), (648, 216), # 002
(864, 432), (864, 432)),
(None, None, None, f_fill, 1, (648, 216), (648, 216), # 003
(864, 432), (864, 432)),
(None, None, None, f_exact, 0, (648, 216), (648, 216), # 004
(864, 432), (864, 432)),
(None, None, None, f_exact, 1, (648, 216), (648, 216), # 005
(864, 432), (864, 432)),
(None, None, None, f_shrink, 0, (648, 216), (648, 216), # 006
(864, 432), (864, 432)),
(None, None, None, f_shrink, 1, (648, 216), (648, 216), # 007
(864, 432), (864, 432)),
(None, None, None, f_enlarge, 0, (648, 216), (648, 216), # 008
(864, 432), (864, 432)),
(None, None, None, f_enlarge, 1, (648, 216), (648, 216), # 009
(864, 432), (864, 432)),
(None, None, border, f_into, 0, (1188, 540), (648, 216), # 010
(1404, 756), (864, 432)),
(None, None, border, f_into, 1, (1188, 540), (648, 216), # 011
(1404, 756), (864, 432)),
(None, None, border, f_fill, 0, (1188, 540), (648, 216), # 012
(1404, 756), (864, 432)),
(None, None, border, f_fill, 1, (1188, 540), (648, 216), # 013
(1404, 756), (864, 432)),
(None, None, border, f_exact, 0, (1188, 540), (648, 216), # 014
(1404, 756), (864, 432)),
(None, None, border, f_exact, 1, (1188, 540), (648, 216), # 015
(1404, 756), (864, 432)),
(None, None, border, f_shrink, 0, (1188, 540), (648, 216), # 016
(1404, 756), (864, 432)),
(None, None, border, f_shrink, 1, (1188, 540), (648, 216), # 017
(1404, 756), (864, 432)),
(None, None, border, f_enlarge, 0, (1188, 540), (648, 216), # 018
(1404, 756), (864, 432)),
(None, None, border, f_enlarge, 1, (1188, 540), (648, 216), # 019
(1404, 756), (864, 432)),
(None, isp, None, f_into, 0, (324, 108), (324, 108), # 020
(324, 162), (324, 162)),
(None, isp, None, f_into, 1, (324, 108), (324, 108), # 021
(324, 162), (324, 162)),
(None, isp, None, f_fill, 0, (2268, 756), (2268, 756), # 022
(1512, 756), (1512, 756)),
(None, isp, None, f_fill, 1, (2268, 756), (2268, 756), # 023
(1512, 756), (1512, 756)),
(None, isp, None, f_exact, 0, (324, 756), (324, 756), # 024
(324, 756), (324, 756)),
(None, isp, None, f_exact, 1, (324, 756), (324, 756), # 025
(324, 756), (324, 756)),
(None, isp, None, f_shrink, 0, (324, 108), (324, 108), # 026
(324, 162), (324, 162)),
(None, isp, None, f_shrink, 1, (324, 108), (324, 108), # 027
(324, 162), (324, 162)),
(None, isp, None, f_enlarge, 0, (648, 216), (648, 216), # 028
(864, 432), (864, 432)),
(None, isp, None, f_enlarge, 1, (648, 216), (648, 216), # 029
(864, 432), (864, 432)),
(None, isp, border, f_into, 0, (864, 432), (324, 108), # 030
(864, 486), (324, 162)),
(None, isp, border, f_into, 1, (864, 432), (324, 108), # 031
(864, 486), (324, 162)),
(None, isp, border, f_fill, 0, (2808, 1080), (2268, 756), # 032
(2052, 1080), (1512, 756)),
(None, isp, border, f_fill, 1, (2808, 1080), (2268, 756), # 033
(2052, 1080), (1512, 756)),
(None, isp, border, f_exact, 0, (864, 1080), (324, 756), # 034
(864, 1080), (324, 756)),
(None, isp, border, f_exact, 1, (864, 1080), (324, 756), # 035
(864, 1080), (324, 756)),
(None, isp, border, f_shrink, 0, (864, 432), (324, 108), # 036
(864, 486), (324, 162)),
(None, isp, border, f_shrink, 1, (864, 432), (324, 108), # 037
(864, 486), (324, 162)),
(None, isp, border, f_enlarge, 0, (1188, 540), (648, 216), # 038
(1404, 756), (864, 432)),
(None, isp, border, f_enlarge, 1, (1188, 540), (648, 216), # 039
(1404, 756), (864, 432)),
(None, isl, None, f_into, 0, (756, 252), (756, 252), # 040
(648, 324), (648, 324)),
(None, isl, None, f_into, 1, (756, 252), (756, 252), # 041
(648, 324), (648, 324)),
(None, isl, None, f_fill, 0, (972, 324), (972, 324), # 042
(756, 378), (756, 378)),
(None, isl, None, f_fill, 1, (972, 324), (972, 324), # 043
(756, 378), (756, 378)),
(None, isl, None, f_exact, 0, (756, 324), (756, 324), # 044
(756, 324), (756, 324)),
(None, isl, None, f_exact, 1, (756, 324), (756, 324), # 045
(756, 324), (756, 324)),
(None, isl, None, f_shrink, 0, (648, 216), (648, 216), # 046
(648, 324), (648, 324)),
(None, isl, None, f_shrink, 1, (648, 216), (648, 216), # 047
(648, 324), (648, 324)),
(None, isl, None, f_enlarge, 0, (756, 252), (756, 252), # 048
(864, 432), (864, 432)),
(None, isl, None, f_enlarge, 1, (756, 252), (756, 252), # 049
(864, 432), (864, 432)),
# psp=972x504, psp=504x972, isl=756x324, isp=324x756, border=162:270
# --pagesize --border -a pagepdf imgpdf
# --imgsize --fit imgpx
(None, isl, border, f_into, 0, (1296, 576), (756, 252), # 050
(1188, 648), (648, 324)),
(None, isl, border, f_into, 1, (1296, 576), (756, 252), # 051
(1188, 648), (648, 324)),
(None, isl, border, f_fill, 0, (1512, 648), (972, 324), # 052
(1296, 702), (756, 378)),
(None, isl, border, f_fill, 1, (1512, 648), (972, 324), # 053
(1296, 702), (756, 378)),
(None, isl, border, f_exact, 0, (1296, 648), (756, 324), # 054
(1296, 648), (756, 324)),
(None, isl, border, f_exact, 1, (1296, 648), (756, 324), # 055
(1296, 648), (756, 324)),
(None, isl, border, f_shrink, 0, (1188, 540), (648, 216), # 056
(1188, 648), (648, 324)),
(None, isl, border, f_shrink, 1, (1188, 540), (648, 216), # 057
(1188, 648), (648, 324)),
(None, isl, border, f_enlarge, 0, (1296, 576), (756, 252), # 058
(1404, 756), (864, 432)),
(None, isl, border, f_enlarge, 1, (1296, 576), (756, 252), # 059
(1404, 756), (864, 432)),
(psp, None, None, f_into, 0, (504, 972), (504, 168), # 060
(504, 972), (504, 252)),
(psp, None, None, f_into, 1, (972, 504), (972, 324), # 061
(972, 504), (972, 486)),
(psp, None, None, f_fill, 0, (504, 972), (2916, 972), # 062
(504, 972), (1944, 972)),
(psp, None, None, f_fill, 1, (972, 504), (1512, 504), # 063
(972, 504), (1008, 504)),
(psp, None, None, f_exact, 0, (504, 972), (504, 972), # 064
(504, 972), (504, 972)),
(psp, None, None, f_exact, 1, (972, 504), (972, 504), # 065
(972, 504), (972, 504)),
(psp, None, None, f_shrink, 0, (504, 972), (504, 168), # 066
(504, 972), (504, 252)),
(psp, None, None, f_shrink, 1, (972, 504), (648, 216), # 067
(972, 504), (864, 432)),
(psp, None, None, f_enlarge, 0, (504, 972), (648, 216), # 068
(504, 972), (864, 432)),
(psp, None, None, f_enlarge, 1, (972, 504), (972, 324), # 069
(972, 504), (972, 486)),
(psp, None, border, f_into, 0, (504, 972), (180, 60), # 070
(504, 972), (180, 90)),
(psp, None, border, f_into, 1, (972, 504), (432, 144), # 071
(972, 504), (360, 180)),
(psp, None, border, f_fill, 0, (504, 972), (1296, 432), # 072
(504, 972), (864, 432)),
(psp, None, border, f_fill, 1, (972, 504), (540, 180), # 073
(972, 504), (432, 216)),
(psp, None, border, f_exact, 0, (504, 972), (180, 432), # 074
(504, 972), (180, 432)),
(psp, None, border, f_exact, 1, (972, 504), (432, 180), # 075
(972, 504), (432, 180)),
(psp, None, border, f_shrink, 0, (504, 972), (180, 60), # 076
(504, 972), (180, 90)),
(psp, None, border, f_shrink, 1, (972, 504), (432, 144), # 077
(972, 504), (360, 180)),
(psp, None, border, f_enlarge, 0, (504, 972), (648, 216), # 078
(504, 972), (864, 432)),
(psp, None, border, f_enlarge, 1, (972, 504), (648, 216), # 079
(972, 504), (864, 432)),
(psp, isp, None, f_into, 0, (504, 972), (324, 108), # 080
(504, 972), (324, 162)),
(psp, isp, None, f_into, 1, (972, 504), (324, 108), # 081
(972, 504), (324, 162)),
(psp, isp, None, f_fill, 0, (504, 972), (2268, 756), # 082
(504, 972), (1512, 756)),
(psp, isp, None, f_fill, 1, (972, 504), (2268, 756), # 083
(972, 504), (1512, 756)),
(psp, isp, None, f_exact, 0, (504, 972), (324, 756), # 084
(504, 972), (324, 756)),
(psp, isp, None, f_exact, 1, (972, 504), (324, 756), # 085
(972, 504), (324, 756)),
(psp, isp, None, f_shrink, 0, (504, 972), (324, 108), # 086
(504, 972), (324, 162)),
(psp, isp, None, f_shrink, 1, (972, 504), (324, 108), # 087
(972, 504), (324, 162)),
(psp, isp, None, f_enlarge, 0, (504, 972), (648, 216), # 088
(504, 972), (864, 432)),
(psp, isp, None, f_enlarge, 1, (972, 504), (648, 216), # 089
(972, 504), (864, 432)),
(psp, isp, border, f_into, 0, (504, 972), (324, 108), # 090
(504, 972), (324, 162)),
(psp, isp, border, f_into, 1, (972, 504), (324, 108), # 091
(972, 504), (324, 162)),
(psp, isp, border, f_fill, 0, (504, 972), (2268, 756), # 092
(504, 972), (1512, 756)),
(psp, isp, border, f_fill, 1, (972, 504), (2268, 756), # 093
(972, 504), (1512, 756)),
(psp, isp, border, f_exact, 0, (504, 972), (324, 756), # 094
(504, 972), (324, 756)),
(psp, isp, border, f_exact, 1, (972, 504), (324, 756), # 095
(972, 504), (324, 756)),
(psp, isp, border, f_shrink, 0, (504, 972), (324, 108), # 096
(504, 972), (324, 162)),
(psp, isp, border, f_shrink, 1, (972, 504), (324, 108), # 097
(972, 504), (324, 162)),
(psp, isp, border, f_enlarge, 0, (504, 972), (648, 216), # 098
(504, 972), (864, 432)),
(psp, isp, border, f_enlarge, 1, (972, 504), (648, 216), # 099
(972, 504), (864, 432)),
# psp=972x504, psp=504x972, isl=756x324, isp=324x756, border=162:270
# --pagesize --border -a pagepdf imgpdf
# --imgsize --fit imgpx
(psp, isl, None, f_into, 0, (504, 972), (756, 252), # 100
(504, 972), (648, 324)),
(psp, isl, None, f_into, 1, (972, 504), (756, 252), # 101
(972, 504), (648, 324)),
(psp, isl, None, f_fill, 0, (504, 972), (972, 324), # 102
(504, 972), (756, 378)),
(psp, isl, None, f_fill, 1, (972, 504), (972, 324), # 103
(972, 504), (756, 378)),
(psp, isl, None, f_exact, 0, (504, 972), (756, 324), # 104
(504, 972), (756, 324)),
(psp, isl, None, f_exact, 1, (972, 504), (756, 324), # 105
(972, 504), (756, 324)),
(psp, isl, None, f_shrink, 0, (504, 972), (648, 216), # 106
(504, 972), (648, 324)),
(psp, isl, None, f_shrink, 1, (972, 504), (648, 216), # 107
(972, 504), (648, 324)),
(psp, isl, None, f_enlarge, 0, (504, 972), (756, 252), # 108
(504, 972), (864, 432)),
(psp, isl, None, f_enlarge, 1, (972, 504), (756, 252), # 109
(972, 504), (864, 432)),
(psp, isl, border, f_into, 0, (504, 972), (756, 252), # 110
(504, 972), (648, 324)),
(psp, isl, border, f_into, 1, (972, 504), (756, 252), # 111
(972, 504), (648, 324)),
(psp, isl, border, f_fill, 0, (504, 972), (972, 324), # 112
(504, 972), (756, 378)),
(psp, isl, border, f_fill, 1, (972, 504), (972, 324), # 113
(972, 504), (756, 378)),
(psp, isl, border, f_exact, 0, (504, 972), (756, 324), # 114
(504, 972), (756, 324)),
(psp, isl, border, f_exact, 1, (972, 504), (756, 324), # 115
(972, 504), (756, 324)),
(psp, isl, border, f_shrink, 0, (504, 972), (648, 216), # 116
(504, 972), (648, 324)),
(psp, isl, border, f_shrink, 1, (972, 504), (648, 216), # 117
(972, 504), (648, 324)),
(psp, isl, border, f_enlarge, 0, (504, 972), (756, 252), # 118
(504, 972), (864, 432)),
(psp, isl, border, f_enlarge, 1, (972, 504), (756, 252), # 119
(972, 504), (864, 432)),
(psl, None, None, f_into, 0, (972, 504), (972, 324), # 120
(972, 504), (972, 486)),
(psl, None, None, f_into, 1, (972, 504), (972, 324), # 121
(972, 504), (972, 486)),
(psl, None, None, f_fill, 0, (972, 504), (1512, 504), # 122
(972, 504), (1008, 504)),
(psl, None, None, f_fill, 1, (972, 504), (1512, 504), # 123
(972, 504), (1008, 504)),
(psl, None, None, f_exact, 0, (972, 504), (972, 504), # 124
(972, 504), (972, 504)),
(psl, None, None, f_exact, 1, (972, 504), (972, 504), # 125
(972, 504), (972, 504)),
(psl, None, None, f_shrink, 0, (972, 504), (648, 216), # 126
(972, 504), (864, 432)),
(psl, None, None, f_shrink, 1, (972, 504), (648, 216), # 127
(972, 504), (864, 432)),
(psl, None, None, f_enlarge, 0, (972, 504), (972, 324), # 128
(972, 504), (972, 486)),
(psl, None, None, f_enlarge, 1, (972, 504), (972, 324), # 129
(972, 504), (972, 486)),
(psl, None, border, f_into, 0, None, None, None, None), # 130
(psl, None, border, f_into, 1, None, None, None, None), # 131
(psl, None, border, f_fill, 0, (972, 504), (648, 216), # 132
(972, 504), (648, 324)),
(psl, None, border, f_fill, 1, (972, 504), (648, 216), # 133
(972, 504), (648, 324)),
(psl, None, border, f_exact, 0, None, None, None, None), # 134
(psl, None, border, f_exact, 1, None, None, None, None), # 135
(psl, None, border, f_shrink, 0, None, None, None, None), # 136
(psl, None, border, f_shrink, 1, None, None, None, None), # 137
(psl, None, border, f_enlarge, 0, (972, 504), (648, 216), # 138
(972, 504), (864, 432)),
(psl, None, border, f_enlarge, 1, (972, 504), (648, 216), # 139
(972, 504), (864, 432)),
(psl, isp, None, f_into, 0, (972, 504), (324, 108), # 140
(972, 504), (324, 162)),
(psl, isp, None, f_into, 1, (972, 504), (324, 108), # 141
(972, 504), (324, 162)),
(psl, isp, None, f_fill, 0, (972, 504), (2268, 756), # 142
(972, 504), (1512, 756)),
(psl, isp, None, f_fill, 1, (972, 504), (2268, 756), # 143
(972, 504), (1512, 756)),
(psl, isp, None, f_exact, 0, (972, 504), (324, 756), # 144
(972, 504), (324, 756)),
(psl, isp, None, f_exact, 1, (972, 504), (324, 756), # 145
(972, 504), (324, 756)),
(psl, isp, None, f_shrink, 0, (972, 504), (324, 108), # 146
(972, 504), (324, 162)),
(psl, isp, None, f_shrink, 1, (972, 504), (324, 108), # 147
(972, 504), (324, 162)),
(psl, isp, None, f_enlarge, 0, (972, 504), (648, 216), # 148
(972, 504), (864, 432)),
(psl, isp, None, f_enlarge, 1, (972, 504), (648, 216), # 149
(972, 504), (864, 432)),
# psp=972x504, psl=504x972, isl=756x324, isp=324x756, border=162:270
# --pagesize --border -a pagepdf imgpdf
# --imgsize --fit imgpx
(psl, isp, border, f_into, 0, (972, 504), (324, 108), # 150
(972, 504), (324, 162)),
(psl, isp, border, f_into, 1, (972, 504), (324, 108), # 151
(972, 504), (324, 162)),
(psl, isp, border, f_fill, 0, (972, 504), (2268, 756), # 152
(972, 504), (1512, 756)),
(psl, isp, border, f_fill, 1, (972, 504), (2268, 756), # 153
(972, 504), (1512, 756)),
(psl, isp, border, f_exact, 0, (972, 504), (324, 756), # 154
(972, 504), (324, 756)),
(psl, isp, border, f_exact, 1, (972, 504), (324, 756), # 155
(972, 504), (324, 756)),
(psl, isp, border, f_shrink, 0, (972, 504), (324, 108), # 156
(972, 504), (324, 162)),
(psl, isp, border, f_shrink, 1, (972, 504), (324, 108), # 157
(972, 504), (324, 162)),
(psl, isp, border, f_enlarge, 0, (972, 504), (648, 216), # 158
(972, 504), (864, 432)),
(psl, isp, border, f_enlarge, 1, (972, 504), (648, 216), # 159
(972, 504), (864, 432)),
(psl, isl, None, f_into, 0, (972, 504), (756, 252), # 160
(972, 504), (648, 324)),
(psl, isl, None, f_into, 1, (972, 504), (756, 252), # 161
(972, 504), (648, 324)),
(psl, isl, None, f_fill, 0, (972, 504), (972, 324), # 162
(972, 504), (756, 378)),
(psl, isl, None, f_fill, 1, (972, 504), (972, 324), # 163
(972, 504), (756, 378)),
(psl, isl, None, f_exact, 0, (972, 504), (756, 324), # 164
(972, 504), (756, 324)),
(psl, isl, None, f_exact, 1, (972, 504), (756, 324), # 165
(972, 504), (756, 324)),
(psl, isl, None, f_shrink, 0, (972, 504), (648, 216), # 166
(972, 504), (648, 324)),
(psl, isl, None, f_shrink, 1, (972, 504), (648, 216), # 167
(972, 504), (648, 324)),
(psl, isl, None, f_enlarge, 0, (972, 504), (756, 252), # 168
(972, 504), (864, 432)),
(psl, isl, None, f_enlarge, 1, (972, 504), (756, 252), # 169
(972, 504), (864, 432)),
(psl, isl, border, f_into, 0, (972, 504), (756, 252), # 170
(972, 504), (648, 324)),
(psl, isl, border, f_into, 1, (972, 504), (756, 252), # 171
(972, 504), (648, 324)),
(psl, isl, border, f_fill, 0, (972, 504), (972, 324), # 172
(972, 504), (756, 378)),
(psl, isl, border, f_fill, 1, (972, 504), (972, 324), # 173
(972, 504), (756, 378)),
(psl, isl, border, f_exact, 0, (972, 504), (756, 324), # 174
(972, 504), (756, 324)),
(psl, isl, border, f_exact, 1, (972, 504), (756, 324), # 175
(972, 504), (756, 324)),
(psl, isl, border, f_shrink, 0, (972, 504), (648, 216), # 176
(972, 504), (648, 324)),
(psl, isl, border, f_shrink, 1, (972, 504), (648, 216), # 177
(972, 504), (648, 324)),
(psl, isl, border, f_enlarge, 0, (972, 504), (756, 252), # 178
(972, 504), (864, 432)),
(psl, isl, border, f_enlarge, 1, (972, 504), (756, 252), # 179
(972, 504), (864, 432)),
]
def test_suite():
class TestImg2Pdf(unittest.TestCase):
pass
for i, (psopt, isopt, border, fit, ao, pspdf1, ispdf1,
pspdf2, ispdf2) in enumerate(layout_test_cases):
if isopt is not None:
isopt = ((img2pdf.ImgSize.abs, isopt[0]),
(img2pdf.ImgSize.abs, isopt[1]))
def layout_handler(
self, psopt, isopt, border, fit, ao, pspdf, ispdf, im):
layout_fun = img2pdf.get_layout_fun(psopt, isopt, border, fit, ao)
try:
pwpdf, phpdf, iwpdf, ihpdf = \
layout_fun(im[0], im[1], (img2pdf.default_dpi,
img2pdf.default_dpi))
self.assertEqual((pwpdf, phpdf), pspdf)
self.assertEqual((iwpdf, ihpdf), ispdf)
except img2pdf.NegativeDimensionException:
self.assertEqual(None, pspdf)
self.assertEqual(None, ispdf)
def layout_handler_im1(self, psopt=psopt, isopt=isopt, border=border,
fit=fit, ao=ao, pspdf=pspdf1, ispdf=ispdf1):
layout_handler(self, psopt, isopt, border, fit, ao, pspdf, ispdf,
im1)
setattr(TestImg2Pdf, "test_layout_%03d_im1" % i, layout_handler_im1)
def layout_handler_im2(self, psopt=psopt, isopt=isopt, border=border,
fit=fit, ao=ao, pspdf=pspdf2, ispdf=ispdf2):
layout_handler(self, psopt, isopt, border, fit, ao, pspdf, ispdf,
im2)
setattr(TestImg2Pdf, "test_layout_%03d_im2" % i, layout_handler_im2)
files = os.listdir(os.path.join(HERE, "input"))
for with_pdfrw, test_name in [(a, b) for a in [True, False]
for b in files]:
inputf = os.path.join(HERE, "input", test_name)
if not os.path.isfile(inputf):
continue
outputf = os.path.join(HERE, "output", test_name+".pdf")
assert os.path.isfile(outputf)
def handle(self, f=inputf, out=outputf, with_pdfrw=with_pdfrw):
with open(f, "rb") as inf:
orig_imgdata = inf.read()
output = img2pdf.convert(orig_imgdata, nodate=True,
with_pdfrw=with_pdfrw)
from io import StringIO, BytesIO
from pdfrw import PdfReader, PdfName, PdfWriter
from pdfrw.py23_diffs import convert_load, convert_store
x = PdfReader(StringIO(convert_load(output)))
self.assertEqual(sorted(x.keys()), [PdfName.Info, PdfName.Root,
PdfName.Size])
self.assertEqual(x.Size, '7')
self.assertEqual(x.Info, {})
self.assertEqual(sorted(x.Root.keys()), [PdfName.Pages,
PdfName.Type])
self.assertEqual(x.Root.Type, PdfName.Catalog)
self.assertEqual(sorted(x.Root.Pages.keys()),
[PdfName.Count, PdfName.Kids, PdfName.Type])
self.assertEqual(x.Root.Pages.Count, '1')
self.assertEqual(x.Root.Pages.Type, PdfName.Pages)
self.assertEqual(len(x.Root.Pages.Kids), 1)
self.assertEqual(sorted(x.Root.Pages.Kids[0].keys()),
[PdfName.Contents, PdfName.MediaBox,
PdfName.Parent, PdfName.Resources, PdfName.Type])
self.assertEqual(x.Root.Pages.Kids[0].MediaBox,
['0', '0', '115', '48'])
self.assertEqual(x.Root.Pages.Kids[0].Parent, x.Root.Pages)
self.assertEqual(x.Root.Pages.Kids[0].Type, PdfName.Page)
self.assertEqual(x.Root.Pages.Kids[0].Resources.keys(),
[PdfName.XObject])
self.assertEqual(x.Root.Pages.Kids[0].Resources.XObject.keys(),
[PdfName.Im0])
self.assertEqual(x.Root.Pages.Kids[0].Contents.keys(),
[PdfName.Length])
self.assertEqual(x.Root.Pages.Kids[0].Contents.Length,
str(len(x.Root.Pages.Kids[0].Contents.stream)))
self.assertEqual(x.Root.Pages.Kids[0].Contents.stream,
"q\n115.0000 0 0 48.0000 0.0000 0.0000 cm\n/Im0 "
"Do\nQ")
imgprops = x.Root.Pages.Kids[0].Resources.XObject.Im0
# test if the filter is valid:
self.assertIn(
imgprops.Filter, [[PdfName.DCTDecode], [PdfName.JPXDecode],
[PdfName.FlateDecode]])
# test if the colorspace is valid
self.assertIn(
imgprops.ColorSpace, [PdfName.DeviceGray, PdfName.DeviceRGB,
PdfName.DeviceCMYK])
# test if the image has correct size
orig_img = Image.open(f)
self.assertEqual(imgprops.Width, str(orig_img.size[0]))
self.assertEqual(imgprops.Height, str(orig_img.size[1]))
# if the input file is a jpeg then it should've been copied
# verbatim into the PDF
if imgprops.Filter in [[PdfName.DCTDecode], [PdfName.JPXDecode]]:
self.assertEqual(
x.Root.Pages.Kids[0].Resources.XObject.Im0.stream,
convert_load(orig_imgdata))
elif imgprops.Filter == [PdfName.FlateDecode]:
# otherwise, the data is flate encoded and has to be equal to
# the pixel data of the input image
imgdata = zlib.decompress(
convert_store(
x.Root.Pages.Kids[0].Resources.XObject.Im0.stream))
colorspace = imgprops.ColorSpace
if colorspace == PdfName.DeviceGray:
colorspace = 'L'
elif colorspace == PdfName.DeviceRGB:
colorspace = 'RGB'
elif colorspace == PdfName.DeviceCMYK:
colorspace = 'CMYK'
else:
raise Exception("invalid colorspace")
im = Image.frombytes(colorspace, (int(imgprops.Width),
int(imgprops.Height)),
imgdata)
if orig_img.mode == '1':
orig_img = orig_img.convert("L")
elif orig_img.mode not in ("RGB", "L", "CMYK", "CMYK;I"):
orig_img = orig_img.convert("RGB")
self.assertEqual(im.tobytes(), orig_img.tobytes())
# the python-pil version 2.3.0-1ubuntu3 in Ubuntu does not have
# the close() method
try:
im.close()
except AttributeError:
pass
# now use pdfrw to parse and then write out both pdfs and check the
# result for equality
y = PdfReader(out)
outx = BytesIO()
outy = BytesIO()
xwriter = PdfWriter()
ywriter = PdfWriter()
xwriter.trailer = x
ywriter.trailer = y
xwriter.write(outx)
ywriter.write(outy)
self.assertEqual(outx.getvalue(), outy.getvalue())
# the python-pil version 2.3.0-1ubuntu3 in Ubuntu does not have the
# close() method
try:
orig_img.close()
except AttributeError:
pass
if with_pdfrw:
setattr(TestImg2Pdf, "test_%s_with_pdfrw" % test_name, handle)
else:
setattr(TestImg2Pdf, "test_%s_without_pdfrw" % test_name, handle)
return unittest.TestSuite((
unittest.makeSuite(TestImg2Pdf),
))
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