diff options
Diffstat (limited to 'tests/tail-2/flush-initial.sh')
-rwxr-xr-x | tests/tail-2/flush-initial.sh | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tests/tail-2/flush-initial.sh b/tests/tail-2/flush-initial.sh new file mode 100755 index 000000000..bf68ce764 --- /dev/null +++ b/tests/tail-2/flush-initial.sh @@ -0,0 +1,40 @@ +#!/bin/sh +# inotify-based tail -f didn't flush its initial output before blocking + +# Copyright (C) 2009-2012 Free Software Foundation, Inc. + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +. "${srcdir=.}/init.sh"; path_prepend_ ../src +print_ver_ tail + +echo line > in || fail=1 +# Output should be buffered since we're writing to file +# so we're depending on the flush to write out +tail -f in > out & +tail_pid=$! + +# Wait for 1.5s for the file to be flushed. +tail_flush() +{ + local delay="$1" + + test -s out || + { sleep "$delay"; return 1; } +} +retry_delay_ tail_flush .1 5 || fail=1 + +kill $tail_pid + +Exit $fail |