busybox/testsuite/realpath.tests

#!/bin/sh

# Realpath tests.
# Copyright 2006 by Natanael Copa <n@tanael.org>
# Copyright 2021 by Ron Yorston <rmy@pobox.com>
# Licensed under GPLv2, see file LICENSE in this source tree.

. ./testing.sh

unset LC_ALL
unset LC_MESSAGES
unset LANG
unset LANGUAGE

TESTDIR=realpath_testdir
TESTLINK1="link1"
TESTLINK2="link2"

# create the dir and test files
mkdir -p "./$TESTDIR"
ln -s "./$TESTDIR/not_file" "./$TESTLINK1"
ln -s "./$TESTDIR/not_file/not_dir" "./$TESTLINK2"

# shell's $PWD may leave symlinks unresolved.
# "pwd" may be a built-in and have the same problem.
# External pwd _can't_ have that problem (current dir on Unix is physical).
pwd=`which pwd`
pwd=`$pwd`
testing "realpath on non-existent absolute path 1" "realpath /not_file" "/not_file\n" "" ""
testing "realpath on non-existent absolute path 2" "realpath /not_file/" "/not_file\n" "" ""
testing "realpath on non-existent absolute path 3" "realpath //not_file" "/not_file\n" "" ""
testing "realpath on non-existent absolute path 4" "realpath /not_dir/not_file 2>&1" "realpath: /not_dir/not_file: No such file or directory\n" "" ""

testing "realpath on non-existent local file 1" "realpath $TESTDIR/not_file" "$pwd/$TESTDIR/not_file\n" "" ""
testing "realpath on non-existent local file 2" "realpath $TESTDIR/not_dir/not_file 2>&1" "realpath: $TESTDIR/not_dir/not_file: No such file or directory\n" "" ""

testing "realpath on link to non-existent file 1" "realpath $TESTLINK1" "$pwd/$TESTDIR/not_file\n" "" ""
testing "realpath on link to non-existent file 2" "realpath $TESTLINK2 2>&1" "realpath: $TESTLINK2: No such file or directory\n" "" ""
testing "realpath on link to non-existent file 3" "realpath ./$TESTLINK1" "$pwd/$TESTDIR/not_file\n" "" ""
testing "realpath on link to non-existent file 4" "realpath ./$TESTLINK2 2>&1" "realpath: ./$TESTLINK2: No such file or directory\n" "" ""

# clean up
rm -r "$TESTLINK1" "$TESTLINK2" "$TESTDIR"

exit $((FAILCOUNT <= 255 ? FAILCOUNT : 255))