tests/cmp

   1 #!/bin/sh
   2 # Test 'cmp'.
   3
   4 # Copyright 2017-2025 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/init.sh"; path_prepend_ ../src
  20
  21 fail=0
  22
  23 cat <<'EOF' > exp || fail=1
  24 cmp a a
  25 0
  26 cmp a b
  27 a b differ: char 1, line 1
  28 1
  29 cmp a c
  30 cmp: EOF on 'c' which is empty
  31 1
  32 cmp a d
  33 cmp: d: No such file or directory
  34 2
  35 cmp b a
  36 b a differ: char 1, line 1
  37 1
  38 cmp b b
  39 0
  40 cmp b c
  41 cmp: EOF on 'c' which is empty
  42 1
  43 cmp b d
  44 cmp: d: No such file or directory
  45 2
  46 cmp c a
  47 cmp: EOF on 'c' which is empty
  48 1
  49 cmp c b
  50 cmp: EOF on 'c' which is empty
  51 1
  52 cmp c c
  53 0
  54 cmp c d
  55 cmp: d: No such file or directory
  56 2
  57 cmp d a
  58 cmp: d: No such file or directory
  59 2
  60 cmp d b
  61 cmp: d: No such file or directory
  62 2
  63 cmp d c
  64 cmp: d: No such file or directory
  65 2
  66 cmp d d
  67 cmp: d: No such file or directory
  68 2
  69 cmp -l a a
  70 0
  71 cmp -l a b
  72 1 141 142
  73 1
  74 cmp -l a c
  75 cmp: EOF on 'c' which is empty
  76 1
  77 cmp -l a d
  78 cmp: d: No such file or directory
  79 2
  80 cmp -l b a
  81 1 142 141
  82 1
  83 cmp -l b b
  84 0
  85 cmp -l b c
  86 cmp: EOF on 'c' which is empty
  87 1
  88 cmp -l b d
  89 cmp: d: No such file or directory
  90 2
  91 cmp -l c a
  92 cmp: EOF on 'c' which is empty
  93 1
  94 cmp -l c b
  95 cmp: EOF on 'c' which is empty
  96 1
  97 cmp -l c c
  98 0
  99 cmp -l c d
 100 cmp: d: No such file or directory
 101 2
 102 cmp -l d a
 103 cmp: d: No such file or directory
 104 2
 105 cmp -l d b
 106 cmp: d: No such file or directory
 107 2
 108 cmp -l d c
 109 cmp: d: No such file or directory
 110 2
 111 cmp -l d d
 112 cmp: d: No such file or directory
 113 2
 114 cmp -s a a
 115 0
 116 cmp -s a b
 117 1
 118 cmp -s a c
 119 1
 120 cmp -s a d
 121 2
 122 cmp -s b a
 123 1
 124 cmp -s b b
 125 0
 126 cmp -s b c
 127 1
 128 cmp -s b d
 129 2
 130 cmp -s c a
 131 1
 132 cmp -s c b
 133 1
 134 cmp -s c c
 135 0
 136 cmp -s c d
 137 2
 138 cmp -s d a
 139 2
 140 cmp -s d b
 141 2
 142 cmp -s d c
 143 2
 144 cmp -s d d
 145 2
 146 EOF
 147
 148 echo a >a
 149 echo b >b
 150 : >c
 151 rm -f d
 152
 153 for option in '' -l -s; do
 154   for i in a b c d; do
 155     for j in a b c d; do
 156       echo cmp $option $i $j
 157       cmp $option $i $j >stdout 2>stderr
 158       status=$?
 159       cat stderr stdout
 160       echo $status
 161     done
 162   done
 163 done >out
 164
 165 compare exp out || fail=1
 166
 167 cat <<'EOF' > exp1 || fail=1
 168 cmp a0 a1
 169 cmp: EOF on 'a0' which is empty
 170 1
 171 cmp a1 a2
 172 cmp: EOF on 'a1' after byte 2, line 1
 173 1
 174 cmp a2 a3
 175 cmp: EOF on 'a2' after byte 5, in line 2
 176 1
 177 cmp -l a0 a1
 178 cmp: EOF on 'a0' which is empty
 179 1
 180 cmp -l a1 a2
 181 cmp: EOF on 'a1' after byte 2
 182 1
 183 cmp -l a2 a3
 184 cmp: EOF on 'a2' after byte 5
 185 1
 186 cmp -s a0 a1
 187 1
 188 cmp -s a1 a2
 189 1
 190 cmp -s a2 a3
 191 1
 192 EOF
 193
 194 printf '' >a0
 195 printf '1\n' >a1
 196 printf '1\nfoo' >a2
 197 printf '1\nfoolery\n' >a3
 198
 199 for option in '' -l -s; do
 200   for files in 'a0 a1' 'a1 a2' 'a2 a3'; do
 201     echo cmp $option $files
 202     cmp $option $files >stdout 2>stderr
 203     status=$?
 204     cat stderr stdout
 205     echo $status
 206   done
 207 done >out1
 208
 209 compare exp1 out1 || fail=1
 210
 211 printf 'bad\n' >bad
 212 printf 'bug\n' >bug
 213 echo LC_ALL=C cmp -b bad bug
 214 LC_ALL=C cmp -b bad bug
 215 test $? -eq 1 || fail=1
 216 case `LC_ALL=C cmp -b bad bug` in
 217   'bad bug differ: byte 2, line 1 is '*' a '*' u') ;;
 218   *) echo 'expected cmp -b to report a and u'; fail=1;;
 219 esac
 220
 221 printf 'Jackdaws love my big sphinx of quartz!' > j1
 222 printf 'jackdaws love my big sphinx of quartz.' > j2
 223 cat <<'EOF' > exp2 || fail=1
 224  1 112 J    152 j
 225 38  41 !     56 .
 226 EOF
 227 cmp -bl j1 j2 > out2
 228 test $? -eq 1 || fail=1
 229 compare exp2 out2 || fail=1
 230
 231 if (LC_ALL=en_US.iso8859-1 locale charmap) >/dev/null 2>&1; then
 232   printf '\200\300\377\n' >j3
 233   printf '\0@\177\n' >j4
 234   cat <<'EOF' >exp3 || fail=1
 235 1 200 M-^@   0 ^@
 236 2 300 M-@  100 @
 237 3 377 M-^? 177 ^?
 238 EOF
 239   LC_ALL=en_US.iso8859-1 cmp -bl j3 j4 >out3
 240   test $? -eq 1 || fail=1
 241   compare exp3 out3 || fail=1
 242 fi
 243
 244 big=99999999999999999999999999999999999999999999999999999999999
 245 cmp -i $big j1 j2 || fail=1
 246 cmp -i 1000 -n $big j1 j2 || fail=1
 247
 248 rm -f a b
 249 if timeout 0.1 true && truncate -s 14T a && truncate -s 15T b; then
 250   returns_ 1 timeout 0.1 cmp a b >/dev/null || fail=1
 251 fi
 252 rm -f a b
 253
 254 Exit $fail