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#!/usr/bin/perl -w
# test that config ( trap_nan => 1, trap_inf => 1) really works/dies
use Test::More tests => 43;
use strict;
use Math::BigInt;
use Math::BigFloat;
my $mbi = 'Math::BigInt'; my $mbf = 'Math::BigFloat';
my ($cfg,$x);
foreach my $class ($mbi, $mbf)
{
# can do and defaults are okay?
ok ($class->can('config'), 'can config()');
is ($class->config()->{trap_nan}, 0, 'trap_nan defaults to 0');
is ($class->config()->{trap_inf}, 0, 'trap_inf defaults to 0');
# can set?
$cfg = $class->config( trap_nan => 1 );
is ($cfg->{trap_nan},1, 'trap_nan now true');
# also test that new() still works normally
eval ("\$x = \$class->new('42'); \$x->bnan();");
like ($@, qr/^Tried to set/, 'died');
is ($x,42,'$x after new() never modified');
# can reset?
$cfg = $class->config( trap_nan => 0 );
is ($cfg->{trap_nan}, 0, 'trap_nan disabled');
# can set?
$cfg = $class->config( trap_inf => 1 );
is ($cfg->{trap_inf}, 1, 'trap_inf enabled');
eval ("\$x = \$class->new('4711'); \$x->binf();");
like ($@, qr/^Tried to set/, 'died');
is ($x,4711,'$x after new() never modified');
eval ("\$x = \$class->new('inf');");
like ($@, qr/^Tried to set/, 'died');
is ($x,4711,'$x after new() never modified');
eval ("\$x = \$class->new('-inf');");
like ($@, qr/^Tried to set/, 'died');
is ($x,4711,'$x after new() never modified');
# +$x/0 => +inf
eval ("\$x = \$class->new('4711'); \$x->bdiv(0);");
like ($@, qr/^Tried to set/, 'died');
is ($x,4711,'$x after new() never modified');
# -$x/0 => -inf
eval ("\$x = \$class->new('-0815'); \$x->bdiv(0);");
like ($@, qr/^Tried to set/, 'died');
is ($x,'-815', '$x after new not modified');
$cfg = $class->config( trap_nan => 1 );
# 0/0 => NaN
eval ("\$x = \$class->new('0'); \$x->bdiv(0);");
like ($@, qr/^Tried to set/, 'died');
is ($x,'0', '$x after new not modified');
}
##############################################################################
# BigInt
$x = Math::BigInt->new(2);
eval ("\$x = \$mbi->new('0.1');");
is ($x,2,'never modified since it dies');
eval ("\$x = \$mbi->new('0a.1');");
is ($x,2,'never modified since it dies');
##############################################################################
# BigFloat
$x = Math::BigFloat->new(2);
eval ("\$x = \$mbf->new('0.1a');");
is ($x,2,'never modified since it dies');
# all tests done
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