export DEST="127.0.0.1"

ts_log()

{

	echo "$@"

}

ts_err()

{

	ts_log "$@" | tee >> $ERRF

}

ts_cat()

{

	cat "$@"

}

ts_err_cat()

{

	ts_cat "$@" | tee >> $ERRF

}

ts_skip()

{

    exit 127

}

__ts_cmd()

{

	CMD=$1; shift

	SCRIPT=$1; shift

	DESC=$1; shift

	$CMD $@ 2> $STD_ERR > $STD_OUT

	if [ -s $STD_ERR ]; then

		ts_err "${SCRIPT}: ${DESC} failed:"

		ts_err "command: $CMD $@"

		ts_err "stderr output:"

		ts_err_cat $STD_ERR

		if [ -s $STD_OUT ]; then

			ts_err "stdout output:"

			ts_err_cat $STD_OUT

		fi

	elif [ -s $STD_OUT ]; then

		echo "${SCRIPT}: ${DESC} succeeded with output:"

		cat $STD_OUT

	else

		echo "${SCRIPT}: ${DESC} succeeded"

	fi

}

ts_tc()

{

	__ts_cmd "$TC" "$@"

}

ts_ip()

{

	__ts_cmd "$IP" "$@"

}

ts_ss()

{

	__ts_cmd "$SS" "$@"

}

ts_bridge()

{

	__ts_cmd "$BRIDGE" "$@"

}

ts_qdisc_available()

{

	HELPOUT=`$TC qdisc add $1 help 2>&1`

	if [ "`echo $HELPOUT | grep \"^Unknown qdisc\"`" ]; then

		return 0;

	else

		return 1;

	fi

}

rand_dev()

{

    rnd=""

    while [ ${#rnd} -ne 6 ]; do

        rnd="$(head -c 250 /dev/urandom | tr -dc '[:alpha:]' | head -c 6)"

    done

    echo "dev-$rnd"

}

pr_failed()

{

	echo " [FAILED]"

	ts_err "matching failed"

}

pr_success()

{

	echo " [SUCCESS]"

}

test_on()

{

	echo -n "test on: \"$1\""

	if cat "$STD_OUT" | grep -qE "$1"

	then

		pr_success

	else

		pr_failed

	fi

}

test_on_not()

{

	echo -n "test on: \"$1\""

	if cat "$STD_OUT" | grep -vqE "$1"

	then

		pr_success

	else

		pr_failed

	fi

}

test_lines_count()

{

	echo -n "test on lines count ($1): "

	if [ $(cat "$STD_OUT" | wc -l) -eq "$1" ]

	then

		pr_success

	else

		pr_failed

	fi

}