Storable/t/tied_hook.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;
}
require 'st-dump.pl';
}
use Storable qw(freeze thaw);
$Storable::flags = Storable::FLAGS_COMPAT;
use Test::More tests => 28;
($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};
}
sub STORABLE_freeze {
my $self = shift;
$main::hash_hook1++;
return join(":", keys %$self) . ";" . join(":", values %$self);
}
sub STORABLE_thaw {
my ($self, $cloning, $frozen) = @_;
my ($keys, $values) = split(/;/, $frozen);
my @keys = split(/:/, $keys);
my @values = split(/:/, $values);
for (my $i = 0; $i < @keys; $i++) {
$self->{$keys[$i]} = $values[$i];
}
$main::hash_hook2++;
}
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};
}
sub STORABLE_freeze {
my $self = shift;
$main::array_hook1++;
return join(":", @$self);
}
sub STORABLE_thaw {
my ($self, $cloning, $frozen) = @_;
@$self = split(/:/, $frozen);
$main::array_hook2++;
}
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;
}
sub STORABLE_freeze {
my $self = shift;
$main::scalar_hook1++;
return $$self;
}
sub STORABLE_thaw {
my ($self, $cloning, $frozen) = @_;
$$self = $frozen;
$main::scalar_hook2++;
}
package main;
$a = 'toto';
$b = \$a;
$c = tie %hash, TIED_HASH;
$d = tie @array, TIED_ARRAY;
tie $scalar, TIED_SCALAR;
$scalar = 'foo';
$hash{'attribute'} = 'plain value';
$array[0] = \$scalar;
$array[1] = $c;
$array[2] = \@array;
$array[3] = "plaine scalaire";
@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($got, undef);
isnt($got, $dumped); # our hooks did not handle refs in array
$g = freeze($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); # Tests 10,12,14
is(ref $tied[$i], $type[$i]); # Tests 11,13,15
}
is($$tscalar, 'foo');
is($tarray->[3], 'plaine scalaire');
is($thash->{'attribute'}, 'plain value');
# Ensure hooks were called
is($scalar_hook1, 2);
is($scalar_hook2, 1);
is($array_hook1, 2);
is($array_hook2, 1);
is($hash_hook1, 2);
is($hash_hook2, 1);
#
# And now for the "blessed ref to tied hash" with "store hook" test...
#
my $bc = bless \%hash, 'FOO'; # FOO does not exist -> no hook
my $bx = thaw freeze $bc;
is(ref $bx, 'FOO');
my $old_hash_fetch = $hash_fetch;
my $v = $bx->{attribute};
is($hash_fetch, $old_hash_fetch + 1, 'Still tied');
package TIED_HASH_REF;
sub STORABLE_freeze {
my ($self, $cloning) = @_;
return if $cloning;
return('ref lost');
}
sub STORABLE_thaw {
my ($self, $cloning, $data) = @_;
return if $cloning;
}
package main;
$bc = bless \%hash, 'TIED_HASH_REF';
$bx = thaw freeze $bc;
is(ref $bx, 'TIED_HASH_REF');
$old_hash_fetch = $hash_fetch;
$v = $bx->{attribute};
is($hash_fetch, $old_hash_fetch + 1, 'Still tied');