#!./perl

use strict;
use warnings;

use Test::More tests => 11;
use Scalar::Util qw(blessed);

my $t;

ok(!defined blessed(undef),	'undef is not blessed');
ok(!defined blessed(1),		'Numbers are not blessed');
ok(!defined blessed('A'),	'Strings are not blessed');
ok(!defined blessed({}),	'Unblessed HASH-ref');
ok(!defined blessed([]),	'Unblessed ARRAY-ref');
ok(!defined blessed(\$t),	'Unblessed SCALAR-ref');

my $x;

$x = bless [], "ABC";
is(blessed($x), "ABC",	'blessed ARRAY-ref');

$x = bless {}, "DEF";
is(blessed($x), "DEF",	'blessed HASH-ref');

$x = bless {}, "0";
cmp_ok(blessed($x), "eq", "0",	'blessed HASH-ref');

{
  my $blessed = do {
    my $depth;
    no warnings 'redefine';
    local *UNIVERSAL::can = sub { die "Burp!" if ++$depth > 2; blessed(shift) };
    $x = bless {}, "DEF";
    blessed($x);
  };
  is($blessed, "DEF", 'recursion of UNIVERSAL::can');
}

{
  package Broken;
  sub isa { die };
  sub can { die };

  my $obj = bless [], __PACKAGE__;
  ::is( ::blessed($obj), __PACKAGE__, "blessed on broken isa() and can()" );
}