tests/test/test-N.sh

   1 #!/bin/sh
   2 # Test 'test -N file'.
   3
   4 # Copyright (C) 2018-2024 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 <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ test stat
  21
  22 stat_test_N() {
  23   mtime=$(env stat -c '%.Y' "$1")
  24   atime=$(env stat -c '%.X' "$1")
  25   test "$mtime" = "$atime" && return 1
  26   latest=$(printf '%s\n' "$mtime" "$atime" | sort -g | tail -n1)
  27   test "$mtime" = "$latest"
  28 }
  29
  30 # For a freshly touched file, atime should equal mtime: 'test -N' returns 1.
  31 touch file || framework_failure_
  32 if ! stat_test_N file; then
  33   returns_ 1 env test -N file || fail=1
  34 fi
  35
  36 # Set access time to 2 days ago: 'test -N' returns 0.
  37 touch -a -d '12:00 today -2 days' file || framework_failure_
  38 if stat_test_N file; then
  39   env test -N file || fail=1
  40 fi
  41
  42 # Set mtime to 2 days before atime: 'test -N' returns 1;
  43 touch -m -d '12:00 today -4 days' file || framework_failure_
  44 if ! stat_test_N file; then
  45   returns_ 1 env test -N file || fail=1
  46 fi
  47
  48 # Now modify the file: 'test -N' returns 0.
  49 echo 'data' > file || framework_failure_
  50 if stat_test_N file; then
  51   env test -N file || fail=1
  52 fi
  53
  54 Exit $fail