Gecko [ www.blackthorn-inc.com ]

Name	Size	Permission	Date
HAS_ATTACH.pm	121 B	-r--r--r--	2014-12-27 11:48
HAS_HOOK.pm	82 B	-r--r--r--	2014-12-27 11:48
HAS_OVERLOAD.pm	185 B	-r--r--r--	2014-12-27 11:48
attach.t	1007 B	-r--r--r--	2014-12-27 11:48
attach_errors.t	6.65 KB	-r--r--r--	2014-12-27 11:48
attach_singleton.t	2.32 KB	-r--r--r--	2014-12-27 11:48
blessed.t	6.77 KB	-r--r--r--	2014-12-27 11:48
canonical.t	3.46 KB	-r--r--r--	2014-12-27 11:49
circular_hook.t	1.98 KB	-r--r--r--	2014-12-27 11:48
code.t	7.23 KB	-r--r--r--	2014-12-27 11:48
compat01.t	1.15 KB	-r--r--r--	2014-12-27 11:48
compat06.t	3.25 KB	-r--r--r--	2014-12-27 11:48
croak.t	949 B	-r--r--r--	2014-12-27 11:48
dclone.t	2.19 KB	-r--r--r--	2014-12-27 11:48
destroy.t	362 B	-r--r--r--	2014-12-27 11:48
downgrade.t	17.41 KB	-r--r--r--	2014-12-27 11:48
file_magic.t	13.23 KB	-r--r--r--	2014-12-27 11:48
forgive.t	1.51 KB	-r--r--r--	2014-12-27 11:48
freeze.t	2.56 KB	-r--r--r--	2014-12-27 11:48
integer.t	6.08 KB	-r--r--r--	2014-12-27 11:48
interwork56.t	5.95 KB	-r--r--r--	2014-12-27 11:48
just_plain_nasty.t	4.24 KB	-r--r--r--	2014-12-27 11:48
leaks.t	626 B	-r--r--r--	2014-12-27 11:48
lock.t	1014 B	-r--r--r--	2014-12-27 11:48
make_56_interwork.pl	1.45 KB	-r--r--r--	2014-12-27 11:48
make_downgrade.pl	2.23 KB	-r--r--r--	2014-12-27 11:48
make_overload.pl	177 B	-r--r--r--	2014-12-27 11:48
malice.t	10.3 KB	-r--r--r--	2014-12-27 11:48
overload.t	2.04 KB	-r--r--r--	2014-12-27 11:48
recurse.t	5.74 KB	-r--r--r--	2014-12-27 11:48
restrict.t	3.42 KB	-r--r--r--	2014-12-27 11:48
retrieve.t	1.34 KB	-r--r--r--	2014-12-27 11:48
robust.t	309 B	-r--r--r--	2014-12-27 11:48
sig_die.t	734 B	-r--r--r--	2014-12-27 11:48
st-dump.pl	3.35 KB	-r--r--r--	2014-12-27 11:48
store.t	1.76 KB	-r--r--r--	2014-12-27 11:48
testlib.pl	865 B	-r--r--r--	2014-12-27 11:48
threads.t	1.8 KB	-r--r--r--	2014-12-27 11:48
tied.t	4.12 KB	-r--r--r--	2014-12-27 11:48
tied_hook.t	4.59 KB	-r--r--r--	2014-12-27 11:48
tied_items.t	1.07 KB	-r--r--r--	2014-12-27 11:48
tied_store.t	924 B	-r--r--r--	2014-12-27 11:48
utf8.t	1.14 KB	-r--r--r--	2014-12-27 11:48
utf8hash.t	5.26 KB	-r--r--r--	2014-12-27 11:48
weak.t	3.46 KB	-r--r--r--	2014-12-27 11:48

Rename

#!./perl -w
#
#  Copyright 2005, Adam Kennedy.
#
#  You may redistribute only under the same terms as Perl 5, as specified
#  in the README file that comes with the distribution.
#

# Tests freezing/thawing structures containing Singleton objects,
# which should see both structs pointing to the same object.

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 Test::More tests => 11;
use Storable ();

# Get the singleton
my $object = My::Singleton->new;
isa_ok( $object, 'My::Singleton' );

# Confirm (for the record) that the class is actually a Singleton
my $object2 = My::Singleton->new;
isa_ok( $object2, 'My::Singleton' );
is( "$object", "$object2", 'Class is a singleton' );

############
# Main Tests

my $struct = [ 1, $object, 3 ];

# Freeze the struct
my $frozen = Storable::freeze( $struct );
ok( (defined($frozen) and ! ref($frozen) and length($frozen)), 'freeze returns a string' );

# Thaw the struct
my $thawed = Storable::thaw( $frozen );

# Now it should look exactly like the original
is_deeply( $struct, $thawed, 'Struct superficially looks like the original' );

# ... EXCEPT that the Singleton should be the same instance of the object
is( "$struct->[1]", "$thawed->[1]", 'Singleton thaws correctly' );

# We can also test this empirically
$struct->[1]->{value} = 'Goodbye cruel world!';
is_deeply( $struct, $thawed, 'Empiric testing confirms correct behaviour' );

# End Tests
###########

package My::Singleton;

my $SINGLETON = undef;

sub new {
	$SINGLETON or
	$SINGLETON = bless { value => 'Hello World!' }, $_[0];
}

sub STORABLE_freeze {
	my $self = shift;

# We don't actually need to return anything, but provide a null string
	# to avoid the null-list-return behaviour.
	return ('foo');
}

sub STORABLE_attach {
	my ($class, $clone, $string) = @_;
	Test::More::ok( ! ref $class, 'STORABLE_attach passed class, and not an object' );
	Test::More::is( $class, 'My::Singleton', 'STORABLE_attach is passed the correct class name' );
	Test::More::is( $clone, 0, 'We are not in a dclone' );
	Test::More::is( $string, 'foo', 'STORABLE_attach gets the string back' );

# Get the Singleton object and return it
	return $class->new;
}