API for constructing a parameter object

[gitmo/MooseX-Role-Parameterized.git] / t / 001-parameters.t

#!/usr/bin/env perl
use strict;
use warnings;
use Test::More tests => 7;
use Test::Exception;

use MooseX::Role::Parameterized::Parameters;

my $p = MooseX::Role::Parameterized::Parameters->new;
can_ok($p => 'meta');

do {
    package MyRole::NoParameters;
    use MooseX::Role::Parameterized;
};

my $parameter_metaclass = MyRole::NoParameters->meta->parameter_metaclass;
is($parameter_metaclass->get_all_attributes, 0, "no parameters");

do {
    package MyRole::LengthParameter;
    use MooseX::Role::Parameterized;

    parameter length => (
        is       => 'ro',
        isa      => 'Int',
        required => 1,
    );
};

$parameter_metaclass = MyRole::LengthParameter->meta->parameter_metaclass;
is($parameter_metaclass->get_all_attributes, 1, "exactly one parameter");

my $parameter = ($parameter_metaclass->get_all_attributes)[0];
is($parameter->name, 'length', "parameter name");
ok($parameter->is_required, "parameter is required");

throws_ok {
    MyRole::LengthParameter->meta->construct_parameters;
} qr/^Attribute \(length\) is required/;

$p = MyRole::LengthParameter->meta->construct_parameters(
    length => 5,
);

is($p->length, 5, "correct length");