#! /bin/sh
# Copyright (C) 2003  Laboratoire d'Informatique de Paris 6 (LIP6),
# département Systèmes Répartis Coopératifs (SRC), Université Pierre
# et Marie Curie.
#
# 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 2 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 Spot; see the file COPYING.  If not, write to the Free
# Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.


# Check for the equals visitor

. ./defs || exit 1

check()
{
  ./equals "$2" "$3"
  test $? != $1 && exit 1;
}

# A few things which are equal
check 0 'a' 'a'
check 0 '1' '1'
check 0 '0' '0'
check 0 'a => b' 'a => b'
check 0 'G a ' ' G a'
check 0 'a U b' 'a U b'
check 0 'a & b' 'a & b'
check 0 'a & b' 'b & a'
check 0 'a & b & c' 'c & a && b'
check 0 'a & b & c' 'b & c & a'
check 0 'a && b & a' 'b & a & b'
check 0 'a & b' 'b & a & b'
check 0 'a & b' 'b & a & a'
check 0 'a & b & (c |(f U g)|| e)' 'b & a & a & (c | e |(f U g)| e | c) & b'
check 0 'a & a' 'a'

# other formulae which are not
check 1 'a' 'b'
check 1 '1' '0'
check 1 'a => b' 'b => a'
check 1 'a => b' 'a <=> b'
check 1 'a => b' 'a U b'
check 1 'a R b' 'a U b'
check 1 'a & b & c' 'c & a'
check 1 'b & c' 'c & a & b'
check 1 'a & b & (c |(f U g)| e)' 'b & a & a & (c | e |(g U g)| e | c) & b'

# Precedence
check 0 'a & b ^ c | d' 'd | c ^ b & a'

# Success.
: