mmdebstrap/tests/cwd-directory-not-accessible-by-unshared-user

#!/bin/sh
set -eu
export LC_ALL=C.UTF-8

[ "$(id -u)" -eq 0 ]
[ {{ MODE }} = "unshare" ]

if ! id "${SUDO_USER:-user}" 2>/dev/null; then
       if [ ! -e /mmdebstrap-testenv ]; then
               echo "this test modifies the system and should only be run inside a container" >&2
               exit 1
       fi
       useradd --home-dir "/home/${SUDO_USER:-user}" --create-home "${SUDO_USER:-user}"
fi
prefix="runuser -u ${SUDO_USER:-user} --"

mkdir /tmp/debian-chroot
chmod 700 /tmp/debian-chroot
chown "${SUDO_USER:-user}:${SUDO_USER:-user}" /tmp/debian-chroot
set -- env --chdir=/tmp/debian-chroot
if [ "{{ CMD }}" = "./mmdebstrap" ]; then
	set -- "$@" "$(realpath --canonicalize-existing ./mmdebstrap)"
elif [ "{{ CMD }}" = "perl -MDevel::Cover=-silent,-nogcov ./mmdebstrap" ]; then
	set -- "$@" perl -MDevel::Cover=-silent,-nogcov "$(realpath --canonicalize-existing ./mmdebstrap)"
else
	set -- "$@" {{ CMD }}
fi
$prefix "$@" --mode={{ MODE }} --variant=apt {{ DIST }} /tmp/debian-chroot.tar {{ MIRROR }}
tar -tf /tmp/debian-chroot.tar | sort | diff -u tar1.txt -
rm /tmp/debian-chroot.tar