#!/bin/bash

[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
nft -v >/dev/null || { echo "skip $XT_MULTI (no nft)"; exit 0; }

coproc $XT_MULTI iptables-restore --noflush

cat >&"${COPROC[1]}" <<EOF
*filter
:foo [0:0]
COMMIT
*filter
:foo [0:0]
EOF

sleep 1
$XT_MULTI iptables-save | grep -q ':foo' || exit 1
nft flush ruleset

echo "COMMIT" >&"${COPROC[1]}"
# close the pipe to make iptables-restore exit if it didn't error out yet
eval "exec ${COPROC[1]}>&-"
wait $COPROC_PID