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#!/usr/bin/perl
use strict;
use warnings;
use Test::More tests => 43;
use Test::Exception;
BEGIN {
use_ok('Class::MOP');
}
my $FOO_ATTR = Class::MOP::Attribute->new('$foo');
my $BAR_ATTR = Class::MOP::Attribute->new('$bar' => (
accessor => 'bar'
));
my $BAZ_ATTR = Class::MOP::Attribute->new('$baz' => (
reader => 'get_baz',
writer => 'set_baz',
));
my $BAR_ATTR_2 = Class::MOP::Attribute->new('$bar');
{
package Foo;
use metaclass;
my $meta = Foo->meta;
::lives_ok {
$meta->add_attribute($FOO_ATTR);
} '... we added an attribute to Foo successfully';
::ok($meta->has_attribute('$foo'), '... Foo has $foo attribute');
::is($meta->get_attribute('$foo'), $FOO_ATTR, '... got the right attribute back for Foo');
::ok(!$meta->has_method('foo'), '... no accessor created');
::lives_ok {
$meta->add_attribute($BAR_ATTR_2);
} '... we added an attribute to Foo successfully';
::ok($meta->has_attribute('$bar'), '... Foo has $bar attribute');
::is($meta->get_attribute('$bar'), $BAR_ATTR_2, '... got the right attribute back for Foo');
::ok(!$meta->has_method('bar'), '... no accessor created');
}
{
package Bar;
our @ISA = ('Foo');
my $meta = Bar->meta;
::lives_ok {
$meta->add_attribute($BAR_ATTR);
} '... we added an attribute to Bar successfully';
::ok($meta->has_attribute('$bar'), '... Bar has $bar attribute');
::is($meta->get_attribute('$bar'), $BAR_ATTR, '... got the right attribute back for Bar');
::ok($meta->has_method('bar'), '... an accessor has been created');
::isa_ok($meta->get_method('bar'), 'Class::MOP::Method::Accessor');
}
{
package Baz;
our @ISA = ('Bar');
my $meta = Baz->meta;
::lives_ok {
$meta->add_attribute($BAZ_ATTR);
} '... we added an attribute to Baz successfully';
::ok($meta->has_attribute('$baz'), '... Baz has $baz attribute');
::is($meta->get_attribute('$baz'), $BAZ_ATTR, '... got the right attribute back for Baz');
::ok($meta->has_method('get_baz'), '... a reader has been created');
::ok($meta->has_method('set_baz'), '... a writer has been created');
::isa_ok($meta->get_method('get_baz'), 'Class::MOP::Method::Accessor');
::isa_ok($meta->get_method('set_baz'), 'Class::MOP::Method::Accessor');
}
{
my $meta = Baz->meta;
isa_ok($meta, 'Class::MOP::Class');
is($meta->find_attribute_by_name('$bar'), $BAR_ATTR, '... got the right attribute for "bar"');
is($meta->find_attribute_by_name('$baz'), $BAZ_ATTR, '... got the right attribute for "baz"');
is($meta->find_attribute_by_name('$foo'), $FOO_ATTR, '... got the right attribute for "foo"');
is_deeply(
[ sort { $a->name cmp $b->name } $meta->compute_all_applicable_attributes() ],
[
$BAR_ATTR,
$BAZ_ATTR,
$FOO_ATTR,
],
'... got the right list of applicable attributes for Baz');
is_deeply(
[ map { $_->associated_class } sort { $a->name cmp $b->name } $meta->compute_all_applicable_attributes() ],
[ Bar->meta, Baz->meta, Foo->meta ],
'... got the right list of associated classes from the applicable attributes for Baz');
my $attr;
lives_ok {
$attr = $meta->remove_attribute('$baz');
} '... removed the $baz attribute successfully';
is($attr, $BAZ_ATTR, '... got the right attribute back for Baz');
ok(!$meta->has_attribute('$baz'), '... Baz no longer has $baz attribute');
is($meta->get_attribute('$baz'), undef, '... Baz no longer has $baz attribute');
ok(!$meta->has_method('get_baz'), '... a reader has been removed');
ok(!$meta->has_method('set_baz'), '... a writer has been removed');
is_deeply(
[ sort { $a->name cmp $b->name } $meta->compute_all_applicable_attributes() ],
[
$BAR_ATTR,
$FOO_ATTR,
],
'... got the right list of applicable attributes for Baz');
is_deeply(
[ map { $_->associated_class } sort { $a->name cmp $b->name } $meta->compute_all_applicable_attributes() ],
[ Bar->meta, Foo->meta ],
'... got the right list of associated classes from the applicable attributes for Baz');
{
my $attr;
lives_ok {
$attr = Bar->meta->remove_attribute('$bar');
} '... removed the $bar attribute successfully';
is($attr, $BAR_ATTR, '... got the right attribute back for Bar');
ok(!Bar->meta->has_attribute('$bar'), '... Bar no longer has $bar attribute');
ok(!Bar->meta->has_method('bar'), '... a accessor has been removed');
}
is_deeply(
[ sort { $a->name cmp $b->name } $meta->compute_all_applicable_attributes() ],
[
$BAR_ATTR_2,
$FOO_ATTR,
],
'... got the right list of applicable attributes for Baz');
is_deeply(
[ map { $_->associated_class } sort { $a->name cmp $b->name } $meta->compute_all_applicable_attributes() ],
[ Foo->meta, Foo->meta ],
'... got the right list of associated classes from the applicable attributes for Baz');
# remove attribute which is not there
my $val;
lives_ok {
$val = $meta->remove_attribute('$blammo');
} '... attempted to remove the non-existent $blammo attribute';
is($val, undef, '... got the right value back (undef)');
}
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