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Diffstat (limited to 'tests/misc/close-stdout.sh')
-rwxr-xr-x | tests/misc/close-stdout.sh | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/tests/misc/close-stdout.sh b/tests/misc/close-stdout.sh new file mode 100755 index 0000000..7c3557d --- /dev/null +++ b/tests/misc/close-stdout.sh @@ -0,0 +1,65 @@ +#!/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) 2004-2018 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/>. + +. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ rm + +p=$abs_top_builddir + + +# 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 + returns_ 1 "$p/src/printf" 'foo' >&- 2>/dev/null || fail=1 + returns_ 1 cp --verbose a b >&- 2>/dev/null || fail=1 + rm -Rf tmpfile-?????? || fail=1 + returns_ 1 mktemp tmpfile-XXXXXX >&- 2>/dev/null || fail=1 + returns_ 1 mktemp tmpfile-XXXXXX -q >&- 2>/dev/null || fail=1 + case $(echo tmpfile-??????) in 'tmpfile-??????') ;; *) fail=1 ;; esac +fi + +# Likewise for /dev/full, if /dev/full works. +if test -w /dev/full && test -c /dev/full; then + returns_ 1 "$p/src/printf" 'foo' >/dev/full 2>/dev/null || fail=1 + returns_ 1 cp --verbose a b >/dev/full 2>/dev/null || fail=1 + rm -Rf tmpdir-?????? || fail=1 + returns_ 1 mktemp -d tmpdir-XXXXXX >/dev/full 2>/dev/null || fail=1 + returns_ 1 mktemp -d -q tmpdir-XXXXXX >/dev/full 2>/dev/null || fail=1 + case $(echo tmpfile-??????) in 'tmpfile-??????') ;; *) fail=1 ;; esac +fi + +Exit $fail |