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coreutils/tests/misc/close-stdout
Jim Meyering 68561594ca tests: use "Exit $fail", not (exit $fail); exit $fail
* tests/test-lib.sh (Exit): New function by Ralf Wildenhues in automake
http://git.sv.gnu.org/gitweb/?p=automake.git;a=commitdiff;h=20594c08f63
* tests/**: Convert all uses:

This restrictive change converted the vast majority:

  git grep -l '^(exit \$fail); exit \$fail$' \
    | xargs perl -pi -e 's/'^\(exit \$fail\); exit \$fail$/Exit \$fail/'

And this did the rest, plus a few undesirable ones, so I manually
backed out the changes to ChangeLog-* and build-aux/check.mk:

  git grep -l -E '\(exit [^)]+\); exit ' \
    | xargs perl -pi -e 's/\(exit (.+?)\); exit \1/Exit $1/'
2008-09-10 13:20:10 +02:00

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#!/bin/sh
# Ensure that several programs work fine, even with stdout initially closed.
# This is effectively a test of closeout.c's close_stdout function.
# Copyright (C) 2004, 2006-2008 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/>.
if test "$VERBOSE" = yes; then
set -x
rm --version
fi
. $srcdir/test-lib.sh
p="$abs_top_builddir"
fail=0
# Ensure these exit successfully, even though stdout is closed,
# because they generate no output.
touch a
cp a b >&- || fail=1
test -f b || fail=1
chmod o-w . >&- || fail=1
ln a c >&- || fail=1
rm c >&- || fail=1
mkdir d >&- || fail=1
mv d e >&- || fail=1
rmdir e >&- || fail=1
touch e >&- || fail=1
sleep 0 >&- || fail=1
"$p/src/true" >&- || fail=1
"$p/src/printf" '' >&- || fail=1
# If >&- works, ensure these fail, because stdout is closed and they
# *do* generate output. >&- apparently does not work in HP-UX 11.23.
# This test is ineffective unless /dev/stdout also works.
if "$p/src/test" -w /dev/stdout >/dev/null &&
"$p/src/test" ! -w /dev/stdout >&-; then
"$p/src/printf" 'foo' >&- 2>/dev/null && fail=1
cp --verbose a b >&- 2>/dev/null && fail=1
fi
# Likewise for /dev/full, if /dev/full works.
if test -w /dev/full && test -c /dev/full; then
"$p/src/printf" 'foo' >/dev/full 2>/dev/null && fail=1
cp --verbose a b >/dev/full 2>/dev/null && fail=1
fi
Exit $fail