145 lines
4.8 KiB
Bash
Executable file
145 lines
4.8 KiB
Bash
Executable file
#!/bin/sh
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# test for basic tee functionality.
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# Copyright (C) 2005-2025 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ tee
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echo line >sample || framework_failure_
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# POSIX says: "Processing of at least 13 file operands shall be supported."
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for n in 0 1 2 12 13; do
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files=$(seq $n)
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rm -f $files
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tee $files <sample >out || fail=1
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for f in out $files; do
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compare sample $f || fail=1
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done
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done
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# Ensure tee treats '-' as the name of a file, as mandated by POSIX.
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# Between v5.3.0 and v8.23, a '-' argument caused tee to send another
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# copy of input to standard output.
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tee - <sample >out 2>err || fail=1
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compare sample ./- || fail=1
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compare sample out || fail=1
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compare /dev/null err || fail=1
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# Ensure tee exits early if no more writable outputs
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if test -w /dev/full && test -c /dev/full; then
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yes | returns_ 1 timeout 10 tee /dev/full 2>err >/dev/full || fail=1
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# Ensure an error for each of the 2 outputs
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# (and no redundant errors for stdout).
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test $(wc -l < err) = 2 || { cat err; fail=1; }
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# Ensure we continue with outputs that are OK
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seq 10000 > multi_read || framework_failure_
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returns_ 1 tee /dev/full out2 2>err >out1 <multi_read || fail=1
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cmp multi_read out1 || fail=1
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cmp multi_read out2 || fail=1
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# Ensure an error for failing output
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test $(wc -l < err) = 1 || { cat err; fail=1; }
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returns_ 1 tee out1 out2 2>err >/dev/full <multi_read || fail=1
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cmp multi_read out1 || fail=1
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cmp multi_read out2 || fail=1
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# Ensure an error for failing output
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test $(wc -l < err) = 1 || { cat err; fail=1; }
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fi
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case $host_triplet in
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*aix*) echo 'avoiding due to no way to detect closed outputs on AIX' ;;
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*)
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# Test iopoll-powered early exit for closed pipes
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tee_exited() { sleep $1; test -f tee.exited; }
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# Currently this functionality is most useful with
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# intermittent input from a terminal, but here we
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# use an input pipe that doesn't write anything
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# but will exit as soon as tee does, or it times out
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retry_delay_ tee_exited .1 7 | # 12.7s (Must be > following timeout)
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{ timeout 10 tee -p 2>err && touch tee.exited; } | :
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test $(wc -l < err) = 0 || { cat err; fail=1; }
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test -f tee.exited || fail=1 ;;
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esac
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# Test with unwritable files
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if ! uid_is_privileged_; then # root does not get EPERM.
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touch file.ro || framework_failure_
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chmod a-w file.ro || framework_failure_
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returns_ 1 tee -p </dev/null file.ro || fail=1
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fi
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mkfifo_or_skip_ fifo
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# Ensure tee handles nonblocking output correctly
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# Terminate any background processes
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cleanup_() { kill $pid 2>/dev/null && wait $pid; }
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read_fifo_delayed() {
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{ sleep .1; timeout 10 dd of=/dev/null status=none; } <fifo
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}
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read_fifo_delayed & pid=$!
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dd count=20 bs=100K if=/dev/zero status=none |
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{
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dd count=0 oflag=nonblock status=none
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tee || { cleanup_; touch tee.fail; }
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} >fifo
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test -f tee.fail && fail=1 || cleanup_
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# Ensure tee honors --output-error modes
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read_fifo() { timeout 10 dd count=1 if=fifo of=/dev/null status=none & }
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# Determine platform sigpipe exit status
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read_fifo
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yes >fifo
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pipe_status=$?
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# Default operation is to continue on output errors but exit silently on SIGPIPE
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read_fifo
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yes | returns_ $pipe_status timeout 10 tee ./e/noent 2>err >fifo || fail=1
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test $(wc -l < err) = 1 || { cat err; fail=1; }
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# With -p, SIGPIPE is suppressed, exit 0 for EPIPE when all outputs finished
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read_fifo
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yes | timeout 10 tee -p 2>err >fifo || fail=1
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test $(wc -l < err) = 0 || { cat err; fail=1; }
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# With --output-error=warn, exit 1 for EPIPE when all outputs finished
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read_fifo
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yes | returns_ 1 timeout 10 tee --output-error=warn 2>err >fifo || fail=1
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test $(wc -l < err) = 1 || { cat err; fail=1; }
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# With --output-error=exit, exit 1 immediately for EPIPE
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read_fifo
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yes | returns_ 1 timeout 10 tee --output-error=exit /dev/null 2>err >fifo \
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|| fail=1
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test $(wc -l < err) = 1 || { cat err; fail=1; }
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# With --output-error=exit, exit 1 immediately on output error
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read_fifo
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yes | returns_ 1 timeout 10 tee --output-error=exit ./e/noent 2>err >fifo \
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|| fail=1
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test $(wc -l < err) = 1 || { cat err; fail=1; }
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# With --output-error=exit-nopipe, exit 0 for EPIPE
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read_fifo
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yes | timeout 10 tee --output-error=exit-nopipe 2>err >fifo || fail=1
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test $(wc -l < err) = 0 || { cat err; fail=1; }
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wait
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Exit $fail
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