#!./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;

    }

    require 'st-dump.pl';

}

use Storable qw(freeze thaw);

$Storable::flags = Storable::FLAGS_COMPAT;

use Test::More tests => 25;

($scalar_fetch, $array_fetch, $hash_fetch) = (0, 0, 0);

package TIED_HASH;

sub TIEHASH {

	my $self = bless {}, shift;

	return $self;

}

sub FETCH {

	my $self = shift;

	my ($key) = @_;

	$main::hash_fetch++;

	return $self->{$key};

}

sub STORE {

	my $self = shift;

	my ($key, $value) = @_;

	$self->{$key} = $value;

}

sub FIRSTKEY {

	my $self = shift;

	scalar keys %{$self};

	return each %{$self};

}

sub NEXTKEY {

	my $self = shift;

	return each %{$self};

}

package TIED_ARRAY;

sub TIEARRAY {

	my $self = bless [], shift;

	return $self;

}

sub FETCH {

	my $self = shift;

	my ($idx) = @_;

	$main::array_fetch++;

	return $self->[$idx];

}

sub STORE {

	my $self = shift;

	my ($idx, $value) = @_;

	$self->[$idx] = $value;

}

sub FETCHSIZE {

	my $self = shift;

	return @{$self};

}

package TIED_SCALAR;

sub TIESCALAR {

	my $scalar;

	my $self = bless \$scalar, shift;

	return $self;

}

sub FETCH {

	my $self = shift;

	$main::scalar_fetch++;

	return $$self;

}

sub STORE {

	my $self = shift;

	my ($value) = @_;

	$$self = $value;

}

package FAULT;

$fault = 0;

sub TIESCALAR {

	my $pkg = shift;

	return bless [@_], $pkg;

}

sub FETCH {

	my $self = shift;

	my ($href, $key) = @$self;

	$fault++;

	untie $href->{$key};

	return $href->{$key} = 1;

}

package main;

$a = 'toto';

$b = \$a;

$c = tie %hash, TIED_HASH;

$d = tie @array, TIED_ARRAY;

tie $scalar, TIED_SCALAR;

#$scalar = 'foo';

#$hash{'attribute'} = \$d;

#$array[0] = $c;

#$array[1] = \$scalar;

### If I say

###   $hash{'attribute'} = $d;

### below, then dump() incorrectly dumps the hash value as a string the second

### time it is reached. I have not investigated enough to tell whether it's

### a bug in my dump() routine or in the Perl tieing mechanism.

$scalar = 'foo';

$hash{'attribute'} = 'plain value';

$array[0] = \$scalar;

$array[1] = $c;

$array[2] = \@array;

@tied = (\$scalar, \@array, \%hash);

%a = ('key', 'value', 1, 0, $a, $b, 'cvar', \$a, 'scalarref', \$scalar);

@a = ('first', 3, -4, -3.14159, 456, 4.5, $d, \$d,

	$b, \$a, $a, $c, \$c, \%a, \@array, \%hash, \@tied);

my $f = freeze(\@a);

isnt($f, undef);

$dumped = &dump(\@a);

isnt($dumped, undef);

$root = thaw($f);

isnt($root, undef);

$got = &dump($root);

isnt($got, undef);

### Used to see the manifestation of the bug documented above.

### print "original: $dumped";

### print "--------\n";

### print "got: $got";

### print "--------\n";

is($got, $dumped);

$g = freeze($root);

is(length $f, length $g);

# Ensure the tied items in the retrieved image work

@old = ($scalar_fetch, $array_fetch, $hash_fetch);

@tied = ($tscalar, $tarray, $thash) = @{$root->[$#{$root}]};

@type = qw(SCALAR  ARRAY  HASH);

is(ref tied $$tscalar, 'TIED_SCALAR');

is(ref tied @$tarray, 'TIED_ARRAY');

is(ref tied %$thash, 'TIED_HASH');

@new = ($$tscalar, $tarray->[0], $thash->{'attribute'});

@new = ($scalar_fetch, $array_fetch, $hash_fetch);

# Tests 10..15

for ($i = 0; $i < @new; $i++) {

	is($new[$i], $old[$i] + 1);

	is(ref $tied[$i], $type[$i]);

}

# Check undef ties

my $h = {};

tie $h->{'x'}, 'FAULT', $h, 'x';

my $hf = freeze($h);

isnt($hf, undef);

is($FAULT::fault, 0);

is($h->{'x'}, 1);

is($FAULT::fault, 1);

my $ht = thaw($hf);

isnt($ht, undef);

is($ht->{'x'}, 1);

is($FAULT::fault, 2);

{

    package P;

    use Storable qw(freeze thaw);

    our ($a, $b);

    $b = "not ok ";

    sub TIESCALAR { bless \$a } sub FETCH { "ok " }

    tie $a, P; my $r = thaw freeze \$a; $b = $$r;

    main::is($b, "ok ");

}

{

    # blessed ref to tied object should be thawed blessed

    my @a;

    tie @a, TIED_ARRAY;

    my $r = bless \@a, 'FOO99';

    my $f = freeze($r);

    my $t = thaw($f);

    isnt($t, undef);

    like("$t", qr/^FOO99=ARRAY/);

}