tests/tail-2/assert.sh

   1 #!/bin/sh
   2 # Test for assertion failure in "test".
   3
   4 # Copyright (C) 1999-2013 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
  20 # This test fails with tail from textutils-2.0.
  21 # It would get something like this:
  22 #   tail: tail.c:718: recheck: Assertion 'valid_file_spec (f)' failed.
  23 #   Aborted
  24 # due to a race condition in which a dev/inode pair is reused.
  25
  26 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  27 print_ver_ tail
  28
  29 # Not "expensive" per se, but sleeping for so long is annoying.
  30 very_expensive_
  31
  32 ok='ok ok ok'
  33
  34 touch a foo
  35 tail --follow=name a foo > err 2>&1 &
  36 tail_pid=$!
  37 # Arrange for the tail process to die after 12 seconds.
  38 (sleep 12; kill $tail_pid) &
  39
  40 echo sleeping for 7 seconds...
  41
  42 # Give the backgrounded 'tail' a chance to start before removing foo.
  43 # Otherwise, without --retry, tail wouldn't try to open 'foo' again.
  44 sleep 1
  45
  46 rm -f foo
  47 sleep 6
  48 echo $ok > f
  49 mv f foo
  50
  51 # echo waiting....
  52 wait
  53
  54 case "$(cat err)" in
  55   *$ok) ;;
  56   *) fail=1;;
  57 esac
  58
  59 test $fail = 1 && cat err
  60
  61 Exit $fail