#!/usr/bin/perl
use strict;
use warnings;
use Test::More tests => 62;
use Test::Exception;
BEGIN {
use_ok('Moose');
}
## Roles
{
package Eq;
use Moose::Role;
requires 'equal_to';
sub not_equal_to {
my ($self, $other) = @_;
not $self->equal_to($other);
}
package Comparable;
use Moose::Role;
with 'Eq';
requires 'compare';
sub equal_to {
my ($self, $other) = @_;
$self->compare($other) == 0;
}
sub greater_than {
my ($self, $other) = @_;
$self->compare($other) == 1;
}
sub less_than {
my ($self, $other) = @_;
$self->compare($other) == -1;
}
sub greater_than_or_equal_to {
my ($self, $other) = @_;
$self->greater_than($other) || $self->equal_to($other);
}
sub less_than_or_equal_to {
my ($self, $other) = @_;
$self->less_than($other) || $self->equal_to($other);
}
package Printable;
use Moose::Role;
requires 'to_string';
}
## Classes
{
package US::Currency;
use Moose;
with 'Comparable', 'Printable';
has 'amount' => (is => 'rw', isa => 'Num', default => 0);
sub compare {
my ($self, $other) = @_;
$self->amount <=> $other->amount;
}
sub to_string {
my $self = shift;
sprintf '$%0.2f USD' => $self->amount
}
__PACKAGE__->meta->make_immutable(debug => 0);
}
ok(US::Currency->does('Comparable'), '... US::Currency does Comparable');
ok(US::Currency->does('Eq'), '... US::Currency does Eq');
ok(US::Currency->does('Printable'), '... US::Currency does Printable');
my $hundred = US::Currency->new(amount => 100.00);
isa_ok($hundred, 'US::Currency');
can_ok($hundred, 'amount');
is($hundred->amount, 100, '... got the right amount');
can_ok($hundred, 'to_string');
is($hundred->to_string, '$100.00 USD', '... got the right stringified value');
ok($hundred->does('Comparable'), '... US::Currency does Comparable');
ok($hundred->does('Eq'), '... US::Currency does Eq');
ok($hundred->does('Printable'), '... US::Currency does Printable');
my $fifty = US::Currency->new(amount => 50.00);
isa_ok($fifty, 'US::Currency');
can_ok($fifty, 'amount');
is($fifty->amount, 50, '... got the right amount');
can_ok($fifty, 'to_string');
is($fifty->to_string, '$50.00 USD', '... got the right stringified value');
ok($hundred->greater_than($fifty), '... 100 gt 50');
ok($hundred->greater_than_or_equal_to($fifty), '... 100 ge 50');
ok(!$hundred->less_than($fifty), '... !100 lt 50');
ok(!$hundred->less_than_or_equal_to($fifty), '... !100 le 50');
ok(!$hundred->equal_to($fifty), '... !100 eq 50');
ok($hundred->not_equal_to($fifty), '... 100 ne 50');
ok(!$fifty->greater_than($hundred), '... !50 gt 100');
ok(!$fifty->greater_than_or_equal_to($hundred), '... !50 ge 100');
ok($fifty->less_than($hundred), '... 50 lt 100');
ok($fifty->less_than_or_equal_to($hundred), '... 50 le 100');
ok(!$fifty->equal_to($hundred), '... !50 eq 100');
ok($fifty->not_equal_to($hundred), '... 50 ne 100');
ok(!$fifty->greater_than($fifty), '... !50 gt 50');
ok($fifty->greater_than_or_equal_to($fifty), '... !50 ge 50');
ok(!$fifty->less_than($fifty), '... 50 lt 50');
ok($fifty->less_than_or_equal_to($fifty), '... 50 le 50');
ok($fifty->equal_to($fifty), '... 50 eq 50');
ok(!$fifty->not_equal_to($fifty), '... !50 ne 50');
## ... check some meta-stuff
# Eq
my $eq_meta = Eq->meta;
isa_ok($eq_meta, 'Moose::Meta::Role');
ok($eq_meta->has_method('not_equal_to'), '... Eq has_method not_equal_to');
ok($eq_meta->requires_method('equal_to'), '... Eq requires_method not_equal_to');
# Comparable
my $comparable_meta = Comparable->meta;
isa_ok($comparable_meta, 'Moose::Meta::Role');
ok($comparable_meta->does_role('Eq'), '... Comparable does Eq');
foreach my $method_name (qw(
equal_to not_equal_to
greater_than greater_than_or_equal_to
less_than less_than_or_equal_to
)) {
ok($comparable_meta->has_method($method_name), '... Comparable has_method ' . $method_name);
}
ok($comparable_meta->requires_method('compare'), '... Comparable requires_method compare');
# Printable
my $printable_meta = Printable->meta;
isa_ok($printable_meta, 'Moose::Meta::Role');
ok($printable_meta->requires_method('to_string'), '... Printable requires_method to_string');
# US::Currency
my $currency_meta = US::Currency->meta;
isa_ok($currency_meta, 'Moose::Meta::Class');
ok($currency_meta->does_role('Comparable'), '... US::Currency does Comparable');
ok($currency_meta->does_role('Eq'), '... US::Currency does Eq');
ok($currency_meta->does_role('Printable'), '... US::Currency does Printable');
foreach my $method_name (qw(
amount
equal_to not_equal_to
compare
greater_than greater_than_or_equal_to
less_than less_than_or_equal_to
to_string
)) {
ok($currency_meta->has_method($method_name), '... US::Currency has_method ' . $method_name);
}