mmdebstrap/tests/create-gzip-compressed-tarball

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

prefix=
if [ "$(id -u)" -eq 0 ] && [ "{{ MODE }}" != "root" ] && [ "{{ MODE }}" != "auto" ]; then
  if ! id "${SUDO_USER:-user}" >/dev/null 2>&1; 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} --"
fi

$prefix {{ CMD }} --mode={{ MODE }} --variant=apt {{ DIST }} /tmp/debian-chroot.tar.gz {{ MIRROR }}
printf '\037\213\010' | cmp --bytes=3 /tmp/debian-chroot.tar.gz -
tar -tf /tmp/debian-chroot.tar.gz | sort | diff -u tar1.txt -
rm /tmp/debian-chroot.tar.gz