#!/usr/bin/env bash
#
# Integration loopback test using villas node.
#
# This test checks if a single node can be used as an input
# in multiple paths.
#
# Author: Steffen Vogel <post@steffenvogel.de>
# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
# SPDX-License-Identifier: Apache-2.0

set -e
set -x

DIR=$(mktemp -d)
pushd ${DIR}

function finish {
    popd
    rm -rf ${DIR}
}
trap finish EXIT

cat > config.json <<EOF
{
        "nodes": {
             	"sig_1": {
             			"type": "signal",
             			"values": 1,
             			"signal": "counter",
             			"offset": 100,
             			"limit": 10
             	},
             	"file_1": {
             			"type": "file",
             			"uri": "output1.dat"
             	}
        },
        "paths": [
             {
             	"in": "sig_1",
             	"out": "file_1"
             },
             {
             	"in": "sig_1",
             	"out": "file_1"
             }
        ]
}
EOF

# This configuration is invalid and must fail
! villas node config.json 2> error.log

# Error log must include description
grep -q "Every node must only be used by a single path as destination" error.log
