tests/misc/seq-io-errors.sh

   1 #!/bin/sh
   2 # Test for proper detection of I/O errors in seq
   3
   4 # Copyright (C) 2016-2019 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 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ seq
  21
  22 if ! test -w /dev/full || ! test -c /dev/full; then
  23   skip_ '/dev/full is required'
  24 fi
  25
  26 # Run 'seq' with a timeout, preventing infinite-loop run.
  27 # expected returned codes:
  28 #  1     - seq detected an I/O error and exited with an error.
  29 #  124   - timed-out (seq likely infloop)
  30 #  other - unexpected error
  31 timed_seq_fail() { timeout 10 seq "$@" >/dev/full 2>/dev/null; }
  32
  33
  34 # Test infinite sequence, using fast-path method (seq_fast).
  35 returns_ 1 timed_seq_fail 1 inf || fail=1
  36
  37 # Test infinite sequence, using slow-path method (print_numbers).
  38 returns_ 1 timed_seq_fail 1.1 .1 inf || fail=1
  39
  40 # Test non-infinite sequence, using slow-path method (print_numbers).
  41 # (despite being non-infinite, the entire sequence should take long time to
  42 #  print. Thus, either an I/O error is detected immediately, or seq will
  43 #  timeout).
  44 returns_ 1 timed_seq_fail 1 0.0001 99999999 || fail=1
  45
  46 Exit $fail