BEGIN { $| = 1; print "1..6\n"; }

use JSON::XS;

our $test;
sub ok($;$) {
   print $_[0] ? "" : "not ", "ok ", ++$test, "\n";
}

my $o1 = bless { a => 3 }, "XX";
my $o2 = bless \(my $dummy = 1), "YY";

sub XX::TO_JSON {
   {__,""}
}

my $js = JSON::XS->new;

eval { $js->encode ($o1) }; ok ($@ =~ /allow_blessed/);
eval { $js->encode ($o2) }; ok ($@ =~ /allow_blessed/);
$js->allow_blessed;
ok ($js->encode ($o1) eq "null");
ok ($js->encode ($o2) eq "null");
$js->convert_blessed;
ok ($js->encode ($o1) eq '{"__":""}');
ok ($js->encode ($o2) eq "null");