I was writing some code today using MooseX::Declare and I got sick of writing $foo->to_string, so I thought I'd use the situation to play with overload to overload stringification.

It didn't work. So, I went backwards and tried in standard Perl. That worked fine, and so did Moose when I tried that.

Can anyone see anything wrong with the following test case (only the last test fails)?

(Perl 5.10.1 and MooseX::Declare 0.33)

package InPerl;
use strict;
use warnings;
use overload '""' => \&to_string;

sub new       { bless { val=>$_[1] }, $_[0] }
sub to_string { sprintf "(%s)", $_[0]->{val} }

package InMoose;
use Moose;
use overload '""' => \&to_string;

has val => is => 'rw';
sub to_string { sprintf "(%s)", $_[0]->val }

use MooseX::Declare;
class InDeclare {
    use overload '""' => \&to_string2;

    has val => is => 'rw';
    sub to_string2 { sprintf "(%s)", $_[0]->val }
};

package main;
use strict;
use warnings;
use Test::More;

my $p = InPerl->new(44);
is $p,   "(44)", "perl is ok";
is "$p", "(44)", "perl is ok (Q)";

my $m = InMoose->new(val=>66);
is $m,   "(66)", "moose is ok";
is "$m", "(66)", "moose is ok (Q)";

my $d = InDeclare->new(val=>666);
is $d,   "(666)", "mxd is ok)";    # PASS: "(666)"
is "$d", "(666)", "mxd is ok (Q)"; # FAIL: "InDeclare=HASH(0x2166ab0)"

done_testing;

[download]

and the output:

ok 1 - perl is ok
ok 2 - perl is ok (Q)
ok 3 - moose is ok
ok 4 - moose is ok (Q)
ok 5 - mxd is ok)
not ok 6 - mxd is ok (Q)
#   Failed test 'mxd is ok (Q)'
#   at /home/bri/git/W/oops/foo line 55.
#          got: 'InDeclare=HASH(0x20a1960)'
#     expected: '(666)'
1..6
# Looks like you failed 1 test of 6.

[download]

Unless I state otherwise, all my code runs with strict and warnings

In reply to MooseX::Declare and overload by FunkyMonk

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