1 files changed, 53 insertions, 0 deletions
diff --git a/tests/mv/into-self.sh b/tests/mv/into-self.sh
new file mode 100755
index 0000000..66b65ce
--- /dev/null
+++ b/tests/mv/into-self.sh
@@ -0,0 +1,53 @@
+#!/bin/sh
+# Demonstrate how mv fails when it tries to move a directory into itself.
+
+# Copyright (C) 1998-2023 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_ mv
+
+dir=toself-dir
+file=toself-file
+
+rm -rf $dir $file || framework_failure_
+mkdir -p $dir/a/b || framework_failure_
+touch $file || framework_failure_
+
+
+# This mv command should fail.
+mv $dir $file $dir > out 2>&1 && fail=1
+
+sed \
+   -e "s,mv:,XXX:," \
+   -e "s,$dir,SRC," \
+   -e "s,$dir/$dir,DEST," \
+  out > out2
+
+cat > exp <<\EOF
+XXX: cannot move 'SRC' to a subdirectory of itself, 'DEST'
+EOF
+
+compare exp out2 || fail=1
+
+# Make sure the file is gone.
+test -f $file && fail=1
+# Make sure the directory is *not* moved.
+test -d $dir || fail=1
+test -d $dir/$dir && fail=1
+# Make sure the file has been moved to the right place.
+test -f $dir/$file || fail=1
+
+Exit $fail