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#!./perl -w
#
# Copyright 2002, 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 {
unshift @INC, 't';
unshift @INC, 't/compat' if $] < 5.006002;
if ($ENV{PERL_CORE}){
require Config;
if ($Config::Config{'extensions'} !~ /\bStorable\b/) {
print "1..0 # Skip: Storable was not built\n";
exit 0;
}
} else {
if ($] < 5.005) {
print "1..0 # Skip: No Hash::Util pre 5.005\n";
exit 0;
# And doing this seems on 5.004 seems to create bogus warnings about
# uninitialized variables, or coredumps in Perl_pp_padsv
} elsif (!eval "require Hash::Util") {
if ($@ =~ /Can\'t locate Hash\/Util\.pm in \@INC/s) {
print "1..0 # Skip: No Hash::Util:\n";
exit 0;
} else {
die;
}
}
unshift @INC, 't';
}
}
use Storable qw(dclone freeze thaw);
use Hash::Util qw(lock_hash unlock_value);
use Test::More tests => 100;
my %hash = (question => '?', answer => 42, extra => 'junk', undef => undef);
lock_hash %hash;
unlock_value %hash, 'answer';
unlock_value %hash, 'extra';
delete $hash{'extra'};
my $test;
package Restrict_Test;
sub me_second {
return (undef, $_[0]);
}
package main;
sub freeze_thaw {
my $temp = freeze $_[0];
return thaw $temp;
}
sub testit {
my $hash = shift;
my $cloner = shift;
my $copy = &$cloner($hash);
my @in_keys = sort keys %$hash;
my @out_keys = sort keys %$copy;
is("@in_keys", "@out_keys", "keys match after deep clone");
# $copy = $hash; # used in initial debug of the tests
is(Internals::SvREADONLY(%$copy), 1, "cloned hash restricted?");
is(Internals::SvREADONLY($copy->{question}), 1,
"key 'question' not locked in copy?");
is(Internals::SvREADONLY($copy->{answer}), '',
"key 'answer' not locked in copy?");
eval { $copy->{extra} = 15 } ;
is($@, '', "Can assign to reserved key 'extra'?");
eval { $copy->{nono} = 7 } ;
isnt($@, '', "Can not assign to invalid key 'nono'?");
is(exists $copy->{undef}, 1, "key 'undef' exists");
is($copy->{undef}, undef, "value for key 'undef' is undefined");
}
for $Storable::canonical (0, 1) {
for my $cloner (\&dclone, \&freeze_thaw) {
print "# \$Storable::canonical = $Storable::canonical\n";
testit (\%hash, $cloner);
my $object = \%hash;
# bless {}, "Restrict_Test";
my %hash2;
$hash2{"k$_"} = "v$_" for 0..16;
lock_hash %hash2;
for (0..16) {
unlock_value %hash2, "k$_";
delete $hash2{"k$_"};
}
my $copy = &$cloner(\%hash2);
for (0..16) {
my $k = "k$_";
eval { $copy->{$k} = undef } ;
is($@, '', "Can assign to reserved key '$k'?");
}
}
}
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