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|
#!./perl
# $Id: tied.t,v 1.0 2000/09/01 19:40:42 ram Exp $
#
# 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.
#
# $Log: tied.t,v $
# Revision 1.0 2000/09/01 19:40:42 ram
# Baseline for first official release.
#
sub BEGIN {
chdir('t') if -d 't';
@INC = '.';
push @INC, '../lib';
require Config; import Config;
if ($Config{'extensions'} !~ /\bStorable\b/) {
print "1..0 # Skip: Storable was not built\n";
exit 0;
}
require 'lib/st-dump.pl';
}
sub ok;
use Storable qw(freeze thaw);
print "1..22\n";
($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() incorectly 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, $c, \$c, \%a, \@array, \%hash, \@tied);
ok 1, defined($f = freeze(\@a));
$dumped = &dump(\@a);
ok 2, 1;
$root = thaw($f);
ok 3, defined $root;
$got = &dump($root);
ok 4, 1;
### Used to see the manifestation of the bug documented above.
### print "original: $dumped";
### print "--------\n";
### print "got: $got";
### print "--------\n";
ok 5, $got eq $dumped;
$g = freeze($root);
ok 6, 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);
ok 7, tied $$tscalar;
ok 8, tied @{$tarray};
ok 9, tied %{$thash};
@new = ($$tscalar, $tarray->[0], $thash->{'attribute'});
@new = ($scalar_fetch, $array_fetch, $hash_fetch);
# Tests 10..15
for ($i = 0; $i < @new; $i++) {
print "not " unless $new[$i] == $old[$i] + 1;
printf "ok %d\n", 10 + 2*$i; # Tests 10,12,14
print "not " unless ref $tied[$i] eq $type[$i];
printf "ok %d\n", 11 + 2*$i; # Tests 11,13,15
}
# Check undef ties
my $h = {};
tie $h->{'x'}, 'FAULT', $h, 'x';
my $hf = freeze($h);
ok 16, defined $hf;
ok 17, $FAULT::fault == 0;
ok 18, $h->{'x'} == 1;
ok 19, $FAULT::fault == 1;
my $ht = thaw($hf);
ok 20, defined $ht;
ok 21, $ht->{'x'} == 1;
ok 22, $FAULT::fault == 2;
|
