Storable/t/freeze.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 {
    if ($ENV{PERL_CORE}){
    chdir('t') if -d 't';
    @INC = ('.', '../lib', '../ext/Storable/t');
    } else {
    unshift @INC, 't';
    }
    require Config; import Config;
    if ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bStorable\b/) {
        print "1..0 # Skip: Storable was not built\n";
        exit 0;
    }
    require 'st-dump.pl';
    sub ok;
}

use Storable qw(freeze nfreeze thaw);

print "1..20\n";

$a = 'toto';
$b = \$a;
$c = bless {}, CLASS;
$c->{attribute} = $b;
$d = {};
$e = [];
$d->{'a'} = $e;
$e->[0] = $d;
%a = ('key', 'value', 1, 0, $a, $b, 'cvar', \$c);
@a = ('first', undef, 3, -4, -3.14159, 456, 4.5, $d, \$d, \$e, $e,
    $b, \$a, $a, $c, \$c, \%a);

print "not " unless defined ($f1 = freeze(\@a));
print "ok 1\n";

$dumped = &dump(\@a);
print "ok 2\n";

$root = thaw($f1);
print "not " unless defined $root;
print "ok 3\n";

$got = &dump($root);
print "ok 4\n";

print "not " unless $got eq $dumped;
print "ok 5\n";

package FOO; @ISA = qw(Storable);

sub make {
    my $self = bless {};
    $self->{key} = \%main::a;
    return $self;
};

package main;

$foo = FOO->make;
print "not " unless $f2 = $foo->freeze;
print "ok 6\n";

print "not " unless $f3 = $foo->nfreeze;
print "ok 7\n";

$root3 = thaw($f3);
print "not " unless defined $root3;
print "ok 8\n";

print "not " unless &dump($foo) eq &dump($root3);
print "ok 9\n";

$root = thaw($f2);
print "not " unless &dump($foo) eq &dump($root);
print "ok 10\n";

print "not " unless &dump($root3) eq &dump($root);
print "ok 11\n";

$other = freeze($root);
print "not " unless length($other) == length($f2);
print "ok 12\n";

$root2 = thaw($other);
print "not " unless &dump($root2) eq &dump($root);
print "ok 13\n";

$VAR1 = [
    'method',
    1,
    'prepare',
    'SELECT table_name, table_owner, num_rows FROM iitables
                  where table_owner != \'$ingres\' and table_owner != \'DBA\''
];

$x = nfreeze($VAR1);
$VAR2 = thaw($x);
print "not " unless $VAR2->[3] eq $VAR1->[3];
print "ok 14\n";

# Test the workaround for LVALUE bug in perl 5.004_04 -- from Gisle Aas
sub foo { $_[0] = 1 }
$foo = [];
foo($foo->[1]);
eval { freeze($foo) };
print "not " if $@;
print "ok 15\n";

# Test cleanup bug found by Claudio Garcia -- RAM, 08/06/2001
my $thaw_me = 'asdasdasdasd';

eval {
    my $thawed = thaw $thaw_me;
};
ok 16, $@;

my %to_be_frozen = (foo => 'bar');
my $frozen;
eval {
    $frozen = freeze \%to_be_frozen;
};
ok 17, !$@;

freeze {};
eval { thaw $thaw_me };
eval { $frozen = freeze { foo => {} } };
ok 18, !$@;

thaw $frozen;           # used to segfault here
ok 19, 1;

if ($] >= 5.006) {
    eval '
        $a = []; $#$a = 2; $a->[1] = undef;
        $b = thaw freeze $a;
        @a = map { ~~ exists $a->[$_] } 0 .. $#$a;
        @b = map { ~~ exists $b->[$_] } 0 .. $#$b;
        ok 20, "@a" eq "@b";
    ';
}
else {
    print "ok 20 # skipped (no av_exists)\n";
}