Don't define a coercion directly to a class like URI. Make a subtype

[gitmo/Moose.git] / t / 000_recipes / basics / 005_coercion.t

#!/usr/bin/perl

use strict;
use warnings;

use Test::More;

BEGIN {
    eval "use HTTP::Headers; use Params::Coerce; use URI;";
    plan skip_all => "HTTP::Headers & Params::Coerce & URI required for this test" if $@;        
    plan tests => 17;    
}

use Test::Exception;

{
    package Request;
    use Moose;
    use Moose::Util::TypeConstraints;

    use HTTP::Headers  ();
    use Params::Coerce ();
    use URI            ();

    subtype 'My.HTTP::Headers' => as class_type('HTTP::Headers');

    coerce 'My.HTTP::Headers'
        => from 'ArrayRef'
            => via { HTTP::Headers->new( @{$_} ) }
        => from 'HashRef'
            => via { HTTP::Headers->new( %{$_} ) };

    subtype 'My.URI' => as class_type('HTTP::Headers');

    coerce 'My.URI'
        => from 'Object'
            => via { $_->isa('URI')
                     ? $_
                     : Params::Coerce::coerce( 'URI', $_ ); }
        => from 'Str'
            => via { URI->new( $_, 'http' ) };

    subtype 'Protocol'
        => as 'Str'
        => where { /^HTTP\/[0-9]\.[0-9]$/ };

    has 'base' => ( is => 'rw', isa => 'My.URI', coerce => 1 );
    has 'uri'  => ( is => 'rw', isa => 'My.URI', coerce => 1 );
    has 'method'   => ( is => 'rw', isa => 'Str' );
    has 'protocol' => ( is => 'rw', isa => 'Protocol' );
    has 'headers'  => (
        is      => 'rw',
        isa     => 'My.HTTP::Headers',
        coerce  => 1,
        default => sub { HTTP::Headers->new }
    );
}

my $r = Request->new;
isa_ok($r, 'Request');

{
    my $header = $r->headers;
    isa_ok($header, 'HTTP::Headers');

    is($r->headers->content_type, '', '... got no content type in the header');

    $r->headers( { content_type => 'text/plain' } );

    my $header2 = $r->headers;
    isa_ok($header2, 'HTTP::Headers');
    isnt($header, $header2, '... created a new HTTP::Header object');

    is($header2->content_type, 'text/plain', '... got the right content type in the header');

    $r->headers( [ content_type => 'text/html' ] );

    my $header3 = $r->headers;
    isa_ok($header3, 'HTTP::Headers');
    isnt($header2, $header3, '... created a new HTTP::Header object');

    is($header3->content_type, 'text/html', '... got the right content type in the header');
    
    $r->headers( HTTP::Headers->new(content_type => 'application/pdf') );
    
    my $header4 = $r->headers;    
    isa_ok($header4, 'HTTP::Headers');
    isnt($header3, $header4, '... created a new HTTP::Header object');

    is($header4->content_type, 'application/pdf', '... got the right content type in the header');    
    
    dies_ok {
        $r->headers('Foo')
    } '... dies when it gets bad params';
}

{
    is($r->protocol, undef, '... got nothing by default');

    lives_ok {
        $r->protocol('HTTP/1.0');
    } '... set the protocol correctly';
    is($r->protocol, 'HTTP/1.0', '... got nothing by default');
            
    dies_ok {
        $r->protocol('http/1.0');
    } '... the protocol died with bar params correctly';            
}