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|
use strict;
use warnings;
use Test::More;
use Config;
{
my $p = Impostor->new( 'Donald Duck');
is( $p->greeting, "Hi, I'm Donald Duck", "blank title");
$p->assume_title( 'Mr');
is( $p->greeting, "Hi, I'm Mr Donald Duck", "changed title");
}
# thread support?
subtest 'threads' => sub {
plan skip_all => "No thread support" unless $Config{usethreads};
require threads;
treads->import if threads->can( 'import');
my $ans;
my $p = Impostor->new( 'Donald Duck');
$ans = threads->create( sub { $p->greeting })->join;
is( $ans, "Hi, I'm Donald Duck", "thread: blank title");
$p->assume_title( 'Mr');
$ans = threads->create( sub { $p->greeting })->join;
is( $ans, "Hi, I'm Mr Donald Duck", "thread: changed title");
$ans = threads->create(
sub {
$p->assume_title( 'Uncle');
$p->greeting;
}
)->join;
is( $ans, "Hi, I'm Uncle Donald Duck", "thread: local change");
is( $p->greeting, "Hi, I'm Mr Donald Duck", "thread: change is local");
# second generation thread
$ans = threads->create(
sub {
threads->create( sub { $p->greeting })->join;
}
)->join;
is( $ans, "Hi, I'm Mr Donald Duck", "double thread: got greeting");
};
############################################################################
# must do this in BEGIN so that field hashes are declared before
# first use above
BEGIN {
package CFF;
use Hash::Util::FieldHash qw( :all);
package Person;
{
CFF::fieldhash my %name;
CFF::fieldhash my %title;
sub init {
my $p = shift;
$name{ $p} = shift || '';
$title{ $p} = shift || '';
$p;
}
sub name { $name{ shift()} }
sub title { $title{ shift() } }
}
sub new {
my $class = shift;
bless( \ my $x, $class)->init( @_);
}
sub greeting {
my $p = shift;
my $greet = "Hi, I'm ";
$_ and $greet .= "$_ " for $p->title;
$greet .= $p->name;
$greet;
}
package Impostor;
use parent '-norequire', 'Person';
{
CFF::fieldhash my %assumed_title;
sub init {
my $p = shift;
my ( $name, $title) = @_;
$p->Person::init( $name, $title);
$p->assume_title( $title);
$p;
}
sub title { $assumed_title{ shift()} }
sub assume_title {
my $p = shift;
$assumed_title{ $p} = shift || '';
$p;
}
}
}
done_testing;
|
