#!perl
#
# This file is part of Language-Befunge
#
# This software is copyright (c) 2003 by Jerome Quelin.
#
# This is free software; you can redistribute it and/or modify it under
# the same terms as the Perl 5 programming language system itself.
#
use Language::Befunge::Ops;
use strict;
use warnings;
use Language::Befunge::Interpreter;
use Language::Befunge::IP;
use Language::Befunge::Ops;
use Language::Befunge::Vector;
use Test::More tests => 3;
my ($lbi, $ip, $v);
$lbi = Language::Befunge::Interpreter->new;
$ip = Language::Befunge::IP->new;
$v = Language::Befunge::Vector->new(4,4);
$ip->set_delta( $v );
$lbi->set_curip( $ip );
$ip->spush( 12, 42 );
Language::Befunge::Ops::decis_vert_if( $lbi );
is( $ip->get_delta, '(0,-1)',
'decis_vert_if sets delta to north if popped value is true' );
is( $ip->spop, 12, 'decis_vert_if pops only one value' );
$ip->spush( 0 );
Language::Befunge::Ops::decis_vert_if( $lbi );
is( $ip->get_delta, '(0,1)',
'decis_vert_if sets delta to south if popped value is true' );