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#!/usr/bin/perl
# test that config ( trap_nan => 1, trap_inf => 1) really works/dies
use strict;
use warnings;
use Test::More tests => 43;
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($@, qr/^Tried to create/, 'died');
is($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($@, qr/^Tried to create/, 'died');
is($x, 4711, '$x after new() never modified');
eval ("\$x = \$class->new('inf');");
like($@, qr/^Tried to create/, 'died');
is($x, 4711, '$x after new() never modified');
eval ("\$x = \$class->new('-inf');");
like($@, qr/^Tried to create/, 'died');
is($x, 4711, '$x after new() never modified');
# +$x/0 => +inf
eval ("\$x = \$class->new('4711'); \$x->bdiv(0);");
like($@, qr/^Tried to create/, 'died');
is($x, 4711, '$x after new() never modified');
# -$x/0 => -inf
eval ("\$x = \$class->new('-0815'); \$x->bdiv(0);");
like($@, qr/^Tried to create/, 'died');
is($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 create/, 'died');
is($x, '0', '$x after new not modified');
}
##############################################################################
# Math::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');
##############################################################################
# Math::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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