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|
use strict;
use warnings;
use Test::More;
use Test::Fatal;
use Class::MOP;
{
package MyMeta;
use parent 'Class::MOP::Class';
sub initialize {
my $class = shift;
my ( $package, %options ) = @_;
::cmp_ok( $options{foo}, 'eq', 'this',
'option passed to initialize() on create_anon_class()' );
return $class->SUPER::initialize( @_ );
}
}
{
my $anon = MyMeta->create_anon_class( foo => 'this' );
isa_ok( $anon, 'MyMeta' );
}
my $instance;
{
my $meta = Class::MOP::Class->create_anon_class;
$instance = $meta->new_object;
}
{
my $meta = Class::MOP::class_of($instance);
Scalar::Util::weaken($meta);
ok($meta, "anon class is kept alive by existing instances");
undef $instance;
ok(!$meta, "anon class is collected once instances go away");
}
{
my $meta = Class::MOP::Class->create_anon_class;
$meta->make_immutable;
$instance = $meta->name->new;
}
{
my $meta = Class::MOP::class_of($instance);
Scalar::Util::weaken($meta);
ok($meta, "anon class is kept alive by existing instances (immutable)");
undef $instance;
ok(!$meta, "anon class is collected once instances go away (immutable)");
}
{
$instance = Class::MOP::Class->create('Foo')->new_object;
my $meta = Class::MOP::Class->create_anon_class(superclasses => ['Foo']);
$meta->rebless_instance($instance);
}
{
my $meta = Class::MOP::class_of($instance);
Scalar::Util::weaken($meta);
ok($meta, "anon class is kept alive by existing instances");
undef $instance;
ok(!$meta, "anon class is collected once instances go away");
}
{
{
my $meta = Class::MOP::Class->create_anon_class;
{
my $submeta = Class::MOP::Class->create_anon_class(
superclasses => [$meta->name]
);
$instance = $submeta->new_object;
}
{
my $submeta = Class::MOP::class_of($instance);
Scalar::Util::weaken($submeta);
ok($submeta, "anon class is kept alive by existing instances");
$meta->rebless_instance_back($instance);
ok(!$submeta, "reblessing away loses the metaclass");
}
}
my $meta = Class::MOP::class_of($instance);
Scalar::Util::weaken($meta);
ok($meta, "anon class is kept alive by existing instances");
}
{
my $submeta = Class::MOP::Class->create_anon_class(
superclasses => [Class::MOP::Class->create_anon_class->name],
);
my @superclasses = $submeta->superclasses;
ok(Class::MOP::class_of($superclasses[0]),
"superclasses are kept alive by their subclasses");
}
{
my $meta_name;
{
my $meta = Class::MOP::Class->create_anon_class(
superclasses => ['Class::MOP::Class'],
);
$meta_name = $meta->name;
ok(Class::MOP::metaclass_is_weak($meta_name),
"default is for anon metaclasses to be weakened");
}
ok(!Class::MOP::class_of($meta_name),
"and weak metaclasses go away when all refs do");
{
my $meta = Class::MOP::Class->create_anon_class(
superclasses => ['Class::MOP::Class'],
weaken => 0,
);
$meta_name = $meta->name;
ok(!Class::MOP::metaclass_is_weak($meta_name),
"anon classes can be told not to weaken");
}
ok(Class::MOP::class_of($meta_name), "metaclass still exists");
{
my $bar_meta;
is( exception {
$bar_meta = $meta_name->initialize('Bar');
}, undef, "we can use the name on its own" );
isa_ok($bar_meta, $meta_name);
}
}
{
my $meta = Class::MOP::Class->create(
'Baz',
weaken => 1,
);
$instance = $meta->new_object;
}
{
my $meta = Class::MOP::class_of($instance);
Scalar::Util::weaken($meta);
ok($meta, "weak class is kept alive by existing instances");
undef $instance;
ok(!$meta, "weak class is collected once instances go away");
}
done_testing;
|
