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Dir : ~/home/.cpan/build/Storable-3.25-0/t/

View File Name : overload.t

#!./perl
#
#  Copyright (c) 1995-2000, Raphael Manfredi
#  
#  You may redistribute only under the same terms as Perl 5, as specified
#  in the README file that comes with the distribution.
#  

sub BEGIN {
    unshift @INC, 't';
    unshift @INC, 't/compat' if $] < 5.006002;
    require Config; import Config;
    if ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bStorable\b/) {
        print "1..0 # Skip: Storable was not built\n";
        exit 0;
    }
}

use Storable qw(freeze thaw);

$Storable::flags = Storable::FLAGS_COMPAT;

use Test::More tests => 19;

package OVERLOADED;

use overload
	'""' => sub { $_[0][0] };

package main;

$a = bless [77], OVERLOADED;

$b = thaw freeze $a;
is(ref $b, 'OVERLOADED');
is("$b", "77");

$c = thaw freeze \$a;
is(ref $c, 'REF');
is(ref $$c, 'OVERLOADED');
is("$$c", "77");

$d = thaw freeze [$a, $a];
is("$d->[0]", "77");
$d->[0][0]++;
is("$d->[1]", "78");

package REF_TO_OVER;

sub make {
	my $self = bless {}, shift;
	my ($over) = @_;
	$self->{over} = $over;
	return $self;
}

package OVER;

use overload
	'+'		=> \&plus,
	'""'	=> sub { ref $_[0] };

sub plus {
	return 314;
}

sub make {
	my $self = bless {}, shift;
	my $ref = REF_TO_OVER->make($self);
	$self->{ref} = $ref;
	return $self;
}

package main;

$a = OVER->make();
$b = thaw freeze $a;

is(ref $b, 'OVER');
is($a + $a, 314);
is(ref $b->{ref}, 'REF_TO_OVER');
is("$b->{ref}->{over}", "$b");
is($b + $b, 314);

# nfreeze data generated by make_overload.pl
my $f = '';
if (ord ('A') == 193) { # EBCDIC.
    $f = unpack 'u', q{7!084$0S(P>)MUN7%V=/6P<0*!**5EJ8`};
}else {
    $f = unpack 'u', q{7!084$0Q(05-?3U9%4DQ/040*!'-N;W<`};
}

# see note at the end of do_retrieve in Storable.xs about why this test has to
# use a reference to an overloaded reference, rather than just a reference.
my $t = eval {thaw $f};
print "# $@" if $@;
is($@, "");
is(ref ($t), 'REF');
is(ref ($$t), 'HAS_OVERLOAD');
is($$$t, 'snow');


#---
# blessed reference to overloaded object.
{
  my $a = bless [88], 'OVERLOADED';
  my $c = thaw freeze bless \$a, 'main';
  is(ref $c, 'main');
  is(ref $$c, 'OVERLOADED');
  is("$$c", "88");

}

1;