1 files changed, 48 insertions, 0 deletions
diff --git a/tests/du/deref-args.sh b/tests/du/deref-args.sh
new file mode 100755
index 0000000..c4b16b5
--- /dev/null
+++ b/tests/du/deref-args.sh
@@ -0,0 +1,48 @@
+#!/bin/sh
+# Ensure that --dereference-args (-D) gives reasonable names.
+# This test would fail for coreutils-5.0.91.
+
+# Copyright (C) 2003-2020 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_ du
+
+mkdir -p dir/a || framework_failure_
+ln -s dir slink || framework_failure_
+printf %65536s x > 64k || framework_failure_
+ln -s 64k slink-to-64k || framework_failure_
+
+
+du -D slink | sed 's/^[0-9][0-9]*	//' > out
+# Ensure that the trailing slash is preserved and handled properly.
+du -D slink/ | sed 's/^[0-9][0-9]*	//' >> out
+
+# Ensure that -D makes du dereference even symlinks to non-directories.
+# Be sure to use --apparent-size.  Otherwise, we'd get varying block counts
+# depending on file system type (e.g. 68 on ext3 vs. 64 on tmpfs and 72
+# on SELinux-enabled systems).
+du --apparent-size --block-size=1K -D slink-to-64k >> out
+cat <<\EOF > exp
+slink/a
+slink
+slink/a
+slink/
+64	slink-to-64k
+EOF
+
+compare exp out || fail=1
+
+Exit $fail