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#!./perl -w
#
# test a few problems with the Freezer option, not a complete Freezer
# test suite yet
use strict;
use warnings;
use Test::More tests => 8;
use Data::Dumper;
use lib qw( ./t/lib );
use Testing qw( _dumptostr );
{
local $Data::Dumper::Freezer = 'freeze';
# test for seg-fault bug when freeze() returns a non-ref
{
my $foo = Test1->new("foo");
my $dumped_foo = Dumper($foo);
ok($dumped_foo,
"Use of freezer sub which returns non-ref worked.");
like($dumped_foo, qr/frozed/,
"Dumped string has the key added by Freezer with useperl.");
like(join(" ", Dumper($foo)), qr/\A\$VAR1 = /,
"Dumped list doesn't begin with Freezer's return value with useperl");
}
# test for warning when an object does not have a freeze()
{
my $warned = 0;
local $SIG{__WARN__} = sub { $warned++ };
my $bar = Test2->new("bar");
my $dumped_bar = Dumper($bar);
is($warned, 0, "A missing freeze() shouldn't warn.");
}
# a freeze() which die()s should still trigger the warning
{
my $warned = 0;
local $SIG{__WARN__} = sub { $warned++; };
my $bar = Test3->new("bar");
my $dumped_bar = Dumper($bar);
is($warned, 1, "A freeze() which die()s should warn.");
}
}
{
my ($obj, %dumps);
my $foo = Test1->new("foo");
local $Data::Dumper::Freezer = 'freeze';
$obj = Data::Dumper->new( [ $foo ] );
$dumps{'ddftrue'} = _dumptostr($obj);
local $Data::Dumper::Freezer = '';
$obj = Data::Dumper->new( [ $foo ] );
$obj->Freezer('freeze');
$dumps{'objset'} = _dumptostr($obj);
is($dumps{'ddftrue'}, $dumps{'objset'},
"\$Data::Dumper::Freezer and Freezer() are equivalent");
}
{
my ($obj, %dumps);
my $foo = Test1->new("foo");
local $Data::Dumper::Freezer = '';
$obj = Data::Dumper->new( [ $foo ] );
$dumps{'ddfemptystr'} = _dumptostr($obj);
local $Data::Dumper::Freezer = undef;
$obj = Data::Dumper->new( [ $foo ] );
$dumps{'ddfundef'} = _dumptostr($obj);
is($dumps{'ddfundef'}, $dumps{'ddfemptystr'},
"\$Data::Dumper::Freezer same with empty string or undef");
}
{
my ($obj, %dumps);
my $foo = Test1->new("foo");
$obj = Data::Dumper->new( [ $foo ] );
$obj->Freezer('');
$dumps{'objemptystr'} = _dumptostr($obj);
$obj = Data::Dumper->new( [ $foo ] );
$obj->Freezer(undef);
$dumps{'objundef'} = _dumptostr($obj);
is($dumps{'objundef'}, $dumps{'objemptystr'},
"Freezer() same with empty string or undef");
}
# a package with a freeze() which returns a non-ref
package Test1;
sub new { bless({name => $_[1]}, $_[0]) }
sub freeze {
my $self = shift;
$self->{frozed} = 1;
}
# a package without a freeze()
package Test2;
sub new { bless({name => $_[1]}, $_[0]) }
# a package with a freeze() which dies
package Test3;
sub new { bless({name => $_[1]}, $_[0]) }
sub freeze { die "freeze() is broken" }
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