1 files changed, 91 insertions, 0 deletions
diff --git a/tests/mv/dup-source.sh b/tests/mv/dup-source.sh
new file mode 100755
index 0000000..4fa666a
--- /dev/null
+++ b/tests/mv/dup-source.sh
@@ -0,0 +1,91 @@
+#!/bin/sh
+# Ensure that cp merely warns when a non-directory source file is
+# listed on the command line more than once.  fileutils-4.1.1
+# made this fail:  cp a a d/
+# Ensure that mv fails with a similar command.
+
+# Copyright (C) 2001-2022 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_ cp mv
+
+skip_if_root_
+
+reset_files() { rm -fr a b d; touch a; mkdir b d; }
+
+for i in cp; do
+
+  # cp may not fail in this case.
+  reset_files
+  $i a a d/ 2> out || fail=1
+  reset_files
+  $i ./a a d/ 2>> out || fail=1
+
+  # Similarly for directories, but handle
+  # source == dest appropriately.
+  reset_files
+  $i -a ./b b d/ 2>> out || fail=1
+  reset_files
+  returns_ 1 $i -a ./b b b/ 2>> out || fail=1
+
+  # cp succeeds with --backup=numbered.
+  reset_files
+  $i --backup=numbered a a d/ 2>> out || fail=1
+
+  # But not with plain '--backup'
+  reset_files
+  returns_ 1 $i --backup a a d/ 2>> out || fail=1
+
+  cat <<EOF > exp
+$i: warning: source file 'a' specified more than once
+$i: warning: source file 'a' specified more than once
+$i: warning: source directory 'b' specified more than once
+$i: cannot copy a directory, './b', into itself, 'b/b'
+$i: warning: source directory 'b' specified more than once
+$i: will not overwrite just-created 'd/a' with 'a'
+EOF
+  compare exp out || fail=1
+done
+
+for i in mv; do
+  # But mv *does* fail in this case (it has to).
+  reset_files
+  returns_ 1 $i a a d/ 2> out || fail=1
+  returns_ 1 test -e a || fail=1
+  reset_files
+  returns_ 1 $i ./a a d/ 2>> out || fail=1
+  returns_ 1 test -e a || fail=1
+
+  # Similarly for directories, also handling
+  # source == dest appropriately.
+  reset_files
+  returns_ 1 $i ./b b d/ 2>> out || fail=1
+  returns_ 1 test -e b || fail=1
+  reset_files
+  returns_ 1 $i --verbose ./b b b/ 2>> out || fail=1
+  test -d b || fail=1
+
+  cat <<EOF > exp
+$i: cannot stat 'a': No such file or directory
+$i: cannot stat 'a': No such file or directory
+$i: cannot stat 'b': No such file or directory
+$i: cannot move './b' to a subdirectory of itself, 'b/b'
+$i: warning: source directory 'b' specified more than once
+EOF
+  compare exp out || fail=1
+done
+
+Exit $fail