#!/bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) 2017, 2018, 2020 Laboratoire de Recherche et Développement de
# l'Epita (LRDE).
#
# This file is part of Spot, a model checking library.
#
# Spot is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Spot is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
# License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

. ./defs
set -e

# Make sure that setting the SPOT_BDD_TRACE envvar actually does
# something.
genltl --kr-nlogn=2 |
    SPOT_BDD_TRACE=1 ltl2tgba -x tls-max-states=0 -D >out 2>err
cat err
grep spot: out && exit 1
grep 'spot: BDD package initialized' err
# This value below, which is the number of time we need to garbage
# collect might change if we improve the tool or change the way BuDDy
# is initialized.
test 11 = `grep -c 'spot: BDD GC' err`
# Minimal size for this automaton.
# See also https://www.lrde.epita.fr/dload/spot/mochart10-fixes.pdf
test "147,207" = `autfilt --stats=%s,%e out`

# With the default value of tls-max-states, no GC is needed
genltl --kr-nlogn=2 | SPOT_BDD_TRACE=1 ltl2tgba -D --stats=%s,%e >out 2>err
cat err
grep 'spot: BDD package initialized' err
test 0 = `grep -c 'spot: BDD GC' err`
test "147,207" = `cat out`
