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#!./perl -w
#
# Copyright 2004, Larry Wall.
#
# You may redistribute only under the same terms as Perl 5, as specified
# in the README file that comes with the distribution.
#
sub BEGIN {
# This lets us distribute Test::More in t/
unshift @INC, 't';
unshift @INC, 't/compat' if $] < 5.006002;
require Config; import Config;
if ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bStorable\b/) {
print "1..0 # Skip: Storable was not built\n";
exit 0;
}
if ($Config{extensions} !~ /\bList\/Util\b/) {
print "1..0 # Skip: List::Util was not built\n";
exit 0;
}
require Scalar::Util;
Scalar::Util->import(qw(weaken isweak));
if (grep { /weaken/ } @Scalar::Util::EXPORT_FAIL) {
print("1..0 # Skip: No support for weaken in Scalar::Util\n");
exit 0;
}
}
use Test::More 'no_plan';
use Storable qw (store retrieve freeze thaw nstore nfreeze);
require 'testlib.pl';
use vars '$file';
use strict;
sub tester {
my ($contents, $sub, $testersub, $what) = @_;
# Test that if we re-write it, everything still works:
my $clone = &$sub ($contents);
is ($@, "", "There should be no error extracting for $what");
&$testersub ($clone, $what);
}
my $r = {};
my $s1 = [$r, $r];
weaken $s1->[1];
ok (isweak($s1->[1]), "element 1 is a weak reference");
my $s0 = [$r, $r];
weaken $s0->[0];
ok (isweak($s0->[0]), "element 0 is a weak reference");
my $w = [$r];
weaken $w->[0];
ok (isweak($w->[0]), "element 0 is a weak reference");
package OVERLOADED;
use overload
'""' => sub { $_[0][0] };
package main;
$a = bless [77], 'OVERLOADED';
my $o = [$a, $a];
weaken $o->[0];
ok (isweak($o->[0]), "element 0 is a weak reference");
my @tests = (
[$s1,
sub {
my ($clone, $what) = @_;
isa_ok($clone,'ARRAY');
isa_ok($clone->[0],'HASH');
isa_ok($clone->[1],'HASH');
ok(!isweak $clone->[0], "Element 0 isn't weak");
ok(isweak $clone->[1], "Element 1 is weak");
}
],
# The weak reference needs to hang around long enough for other stuff to
# be able to make references to it. So try it second.
[$s0,
sub {
my ($clone, $what) = @_;
isa_ok($clone,'ARRAY');
isa_ok($clone->[0],'HASH');
isa_ok($clone->[1],'HASH');
ok(isweak $clone->[0], "Element 0 is weak");
ok(!isweak $clone->[1], "Element 1 isn't weak");
}
],
[$w,
sub {
my ($clone, $what) = @_;
isa_ok($clone,'ARRAY');
if ($what eq 'nothing') {
# We're the original, so we're still a weakref to a hash
isa_ok($clone->[0],'HASH');
ok(isweak $clone->[0], "Element 0 is weak");
} else {
is($clone->[0],undef);
}
}
],
[$o,
sub {
my ($clone, $what) = @_;
isa_ok($clone,'ARRAY');
isa_ok($clone->[0],'OVERLOADED');
isa_ok($clone->[1],'OVERLOADED');
ok(isweak $clone->[0], "Element 0 is weak");
ok(!isweak $clone->[1], "Element 1 isn't weak");
is ("$clone->[0]", 77, "Element 0 stringifies to 77");
is ("$clone->[1]", 77, "Element 1 stringifies to 77");
}
],
);
foreach (@tests) {
my ($input, $testsub) = @$_;
tester($input, sub {return shift}, $testsub, 'nothing');
ok (defined store($input, $file));
# Read the contents into memory:
my $contents = slurp ($file);
tester($contents, \&store_and_retrieve, $testsub, 'file');
# And now try almost everything again with a Storable string
my $stored = freeze $input;
tester($stored, \&freeze_and_thaw, $testsub, 'string');
ok (defined nstore($input, $file));
tester($contents, \&store_and_retrieve, $testsub, 'network file');
$stored = nfreeze $input;
tester($stored, \&freeze_and_thaw, $testsub, 'network string');
}
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