1 files changed, 32 insertions, 0 deletions
diff --git a/tests/ln/hard-backup.sh b/tests/ln/hard-backup.sh
new file mode 100755
index 0000000..2a4ad8f
--- /dev/null
+++ b/tests/ln/hard-backup.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+# Ensure that 'ln --backup F F' gives a proper diagnostic.
+
+# Copyright (C) 2006-2020 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_ ln
+
+touch f || framework_failure_
+
+
+ln --backup f f 2> out && fail=1
+cat <<\EOF > exp || framework_failure_
+ln: 'f' and 'f' are the same file
+EOF
+
+compare exp out || fail=1
+
+Exit $fail