1 files changed, 43 insertions, 0 deletions
diff --git a/tests/mv/force.sh b/tests/mv/force.sh
new file mode 100755
index 0000000..427cc88
--- /dev/null
+++ b/tests/mv/force.sh
@@ -0,0 +1,43 @@
+#!/bin/sh
+# move a file onto itself
+
+# Copyright (C) 1999-2023 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
+
+ff=mvforce
+ff2=mvforce2
+
+echo force-contents > $ff || framework_failure_
+ln $ff $ff2 || framework_failure_
+
+# mv should fail for the same name, or separate hardlinks as in
+# both cases rename() will do nothing and return success.
+# One could unlink(src) in the hardlink case, but that would
+# introduce races with overlapping mv instances removing both hardlinks.
+
+for dest in $ff $ff2; do
+  # This mv command should exit nonzero.
+  mv $ff $dest > out 2>&1 && fail=1
+
+  printf "mv: '$ff' and '$dest' are the same file\n" > exp
+  compare exp out || fail=1
+
+  test $(cat $ff) = force-contents || fail=1
+done
+
+Exit $fail