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..38b4038
--- /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) 2004-2022 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