tests/tail-2/fflush

   1 #!/bin/sh
   2 # This test would fail on solaris2.7 with tail from pre-1.22k textutils.
   3 # The problem was that using the solaris2.7 setvbuf function to turn off
   4 # buffering doesn't flush stdout.
   5
   6 # FIXME: actually, I couldn't find a way to write the test (without resorting
   7 # to use of expect) so that it would provoke the failure on solaris2.7.
   8 # To exercise the bug, cat's stdout seems to have to be directed
   9 # to a terminal.
  10
  11 if test "$VERBOSE" = yes; then
  12   set -x
  13   tail --version
  14 fi
  15
  16 tmp=tail-flush.$$
  17 pwd=`pwd`
  18 trap "cd $pwd; rm -rf $tmp" 0 1 2 3 15
  19
  20 test_failure=0
  21 mkdir $tmp || test_failure=1
  22 cd $tmp || test_failure=1
  23
  24 if test $test_failure = 1; then
  25   echo 'failure in testing framework'
  26   exit 1
  27 fi
  28
  29 echo fubar > in
  30 tail -f in | cat > out &
  31 pid=$!
  32 sleep 1
  33 kill $pid
  34
  35 fail=0
  36 test "`cat out`" = fubar || fail=1
  37
  38 exit $fail