#!/bin/sh # Ensure that cat outputs processed data immediately. # Copyright (C) 2009-2020 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 <https://www.gnu.org/licenses/>. . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src print_ver_ cat # Use a fifo rather than a pipe in the tests below # so that the producer (cat) will wait until the # consumer (dd) opens the fifo therefore increasing # the chance that dd will read the data from each # write separately. mkfifo_or_skip_ fifo # Terminate any background cp process cleanup_() { kill $pid 2>/dev/null && wait $pid; } echo 1 > exp cat_buf_1() { local delay="$1" > out || framework_failure_ dd count=1 if=fifo > out & pid=$! (echo 1; sleep $delay; echo 2) | cat -v > fifo wait $pid compare exp out } retry_delay_ cat_buf_1 .1 6 || fail=1 Exit $fail