Created
September 20, 2016 07:24
-
-
Save hitode909/65370dd2cd3c93780467b4d3a687d2eb to your computer and use it in GitHub Desktop.
->cloneを持つクラス用のImmutableクラス
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
use strict; | |
use warnings; | |
use URI; | |
use DateTime; | |
use Test::More; | |
package Immutable { | |
sub new { | |
my ($class, $obj) = @_; | |
bless { | |
obj => $obj, | |
}, $class; | |
} | |
sub get { | |
my ($self) = @_; | |
$self->{obj}->clone; | |
} | |
sub AUTOLOAD { | |
my $self = shift; | |
my $method = (split /::/, our $AUTOLOAD)[-1]; | |
return if $method eq 'DESTROY'; | |
my $new_obj = $self->get; | |
$new_obj->$method(@_); | |
(ref $self)->new($new_obj); | |
} | |
}; | |
subtest 'URI' => sub { | |
my $uri = URI->new('http://example.com/'); | |
my $immutable_uri = Immutable->new($uri); | |
my $immutable_uri2 = $immutable_uri->host('another.example.com'); | |
my $immutable_uri3 = $immutable_uri->scheme('https'); | |
is $uri->as_string, 'http://example.com/'; | |
is $immutable_uri->get->as_string, 'http://example.com/'; | |
isa_ok $immutable_uri, 'Immutable'; | |
is $immutable_uri2->get->as_string, 'http://another.example.com/'; | |
isa_ok $immutable_uri2, 'Immutable'; | |
is $immutable_uri3->get->as_string, 'https://example.com/'; | |
isa_ok $immutable_uri3, 'Immutable'; | |
$immutable_uri3->get->host('the.example.com'); | |
is $immutable_uri3->get->host, 'example.com'; | |
}; | |
subtest 'DateTime' => sub { | |
my $now = DateTime->from_epoch(epoch => 1474355978); | |
my $now_string = $now.q(); | |
my $immutable_datetime = Immutable->new($now); | |
my $immutable_datetime2 = $immutable_datetime->set_year(2017); | |
my $immutable_datetime3 = $immutable_datetime->add(years => 2); | |
is $now, $now_string; | |
is $immutable_datetime->get->year, 2016; | |
isa_ok $immutable_datetime, 'Immutable'; | |
is $immutable_datetime2->get->year, 2017; | |
isa_ok $immutable_datetime2, 'Immutable'; | |
is $immutable_datetime3->get->year, 2018; | |
isa_ok $immutable_datetime3, 'Immutable'; | |
$immutable_datetime3->get->add(years => 1); | |
is $immutable_datetime3->get->year, 2018; | |
}; | |
done_testing; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment