1#!/bin/sh 2# Ensure that cat outputs processed data immediately. 3 4# Copyright (C) 2009-2023 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 20print_ver_ cat 21 22# Use a fifo rather than a pipe in the tests below 23# so that the producer (cat) will wait until the 24# consumer (dd) opens the fifo therefore increasing 25# the chance that dd will read the data from each 26# write separately. 27mkfifo_or_skip_ fifo 28 29# Terminate any background cp process 30cleanup_() { kill $pid 2>/dev/null && wait $pid; } 31 32echo 1 > exp 33 34cat_buf_1() 35{ 36 local delay="$1" 37 38 > out || framework_failure_ 39 dd count=1 if=fifo > out & pid=$! 40 (echo 1; sleep $delay; echo 2) | cat -v > fifo 41 wait $pid 42 compare exp out 43} 44 45retry_delay_ cat_buf_1 .1 6 || fail=1 46 47Exit $fail 48