* tests/misc/just-created.sh: New file. * tests/local.mk (all_tests): Add the test case. --- tests/local.mk | 1 + tests/misc/just-created.sh | 98 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 99 insertions(+) create mode 100755 tests/misc/just-created.sh
diff --git a/tests/local.mk b/tests/local.mk index 04f6cb1e3..b56e5dcfb 100644 --- a/tests/local.mk +++ b/tests/local.mk @@ -380,6 +380,7 @@ all_tests = \ tests/cksum/md5sum-parallel.sh \ tests/join/join.pl \ tests/join/join-utf8.sh \ + tests/misc/just-created.sh \ tests/misc/mknod.sh \ tests/nice/nice.sh \ tests/nice/nice-fail.sh \ diff --git a/tests/misc/just-created.sh b/tests/misc/just-created.sh new file mode 100755 index 000000000..320a879fc --- /dev/null +++ b/tests/misc/just-created.sh @@ -0,0 +1,98 @@ +#!/bin/sh +# Test that 'cp', 'mv', and 'install' don't remove just-created files. + +# Copyright (C) 2026 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/>. + +. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ cp ginstall mv + +# Setup the files we expect to see. +echo a > exp-a || framework_failure_ +echo b > exp-b || framework_failure_ + +# Setup the initial files and directories for testing. +reset_files () +{ + rm -rf a b c || framework_failure_ + mkdir a b c || framework_failure_ + cat exp-a > a/f || framework_failure_ + cat exp-b > b/f || framework_failure_ +} + +# Check that we don't lose data by overwriting a just-created file. +for prog in cp ginstall mv; do + cat <<EOF >exp || framework_failure_ +$prog: will not overwrite just-created 'c/f' with 'b/f' +EOF + for backup in '' off nil never; do + test -n "$backup" && backup=--backup=$backup + reset_files + returns_ 1 $prog $backup a/f b/f c >out 2>err || fail=1 + compare /dev/null out || fail=1 + compare exp err || fail=1 + # Check if the file specified by the first argument exists. + # That should not be the case for 'mv'. + if test -f a/f; then + test "$prog" != mv || fail=1 + compare exp-a a/f || fail=1 + else + test $prog != mv && fail=1 + fi + # Check the file specified by the second argument and the + # just-created file. + compare exp-b b/f || fail=1 + compare exp-a c/f || fail=1 + # No backups should be created. + set -- c/* + test -f "$1" || set -- + test $# -eq 1 || fail=1 + done +done + +# With numbered backups there is no data loss if we perform the +# requested operation. +for prog in cp ginstall mv; do + reset_files + for i in $(seq 3); do + cat exp-a > a/f || framework_failure_ + cat exp-b > b/f || framework_failure_ + $prog --backup=t a/f b/f c >out 2>err || fail=1 + compare /dev/null out || fail=1 + compare /dev/null err || fail=1 + # When using 'mv' both source files should no longer exist. + # Otherwise, both files should exist. + if test -f a/f; then + test $prog != mv || fail=1 + compare exp-a a/f || fail=1 + compare exp-b b/f || fail=1 + else + test $prog != mv && fail=1 + test -f b/f && fail=1 + fi + # Test that the just created file exists. + compare exp-b c/f || fail=1 + for j in $(seq $i); do + if test $(($j % 2)) -eq 0; then + exp=b + else + exp=a + fi + compare exp-$exp c/f.~$j~ || fail=1 + done + done +done + +Exit $fail -- 2.54.0
