[gitmo/Class-MOP.git] / t / 003_methods.t

#!/usr/bin/perl

use strict;
use warnings;

use Test::More tests => 66;
use Test::Exception;

use Scalar::Util qw/reftype/;
use Sub::Name ();

BEGIN {
    use_ok('Class::MOP');   
    use_ok('Class::MOP::Class');        
}

{   # This package tries to test &has_method 
    # as exhaustively as possible. More corner
    # cases are welcome :)
    package Foo;
    
    # import a sub
    use Scalar::Util 'blessed'; 
    
    sub pie;
    sub cake ();

    use constant FOO_CONSTANT => 'Foo-CONSTANT';
    
    # define a sub in package
    sub bar { 'Foo::bar' } 
    *baz = \&bar;
    
    # create something with the typeglob inside the package
    *baaz = sub { 'Foo::baaz' };    

    { # method named with Sub::Name inside the package scope
        no strict 'refs';
        *{'Foo::floob'} = Sub::Name::subname 'floob' => sub { '!floob!' }; 
    }

    # We hateses the "used only once" warnings
    { 
        my $temp1 = \&Foo::baz;
        my $temp2 = \&Foo::baaz;    
    }
    
    package OinkyBoinky;
    our @ISA = "Foo";
    
    sub elk { 'OinkyBoinky::elk' }

    package main;
    
    sub Foo::blah { $_[0]->Foo::baz() }
    
    {
        no strict 'refs';
        *{'Foo::bling'} = sub { '$$Bling$$' };
        *{'Foo::bang'} = Sub::Name::subname 'Foo::bang' => sub { '!BANG!' }; 
        *{'Foo::boom'} = Sub::Name::subname 'boom' => sub { '!BOOM!' };     
        
        eval "package Foo; sub evaled_foo { 'Foo::evaled_foo' }";           
    }
}

my $Foo = Class::MOP::Class->initialize('Foo');

ok(!$Foo->has_method('pie'), '... got the method stub pie');
ok(!$Foo->has_method('cake'), '... got the constant method stub cake');

my $foo = sub { 'Foo::foo' };

ok(!UNIVERSAL::isa($foo, 'Class::MOP::Method'), '... our method is not yet blessed');

lives_ok {
    $Foo->add_method('foo' => $foo);
} '... we added the method successfully';

my $foo_method = $Foo->get_method('foo');

isa_ok($foo_method, 'Class::MOP::Method');

is($foo_method->name, 'foo', '... got the right name for the method');
is($foo_method->package_name, 'Foo', '... got the right package name for the method');

ok($Foo->has_method('foo'), '... Foo->has_method(foo) (defined with Sub::Name)');

is($Foo->get_method('foo')->body, $foo, '... Foo->get_method(foo) == \&foo');
is(Foo->foo(), 'Foo::foo', '... Foo->foo() returns "Foo::foo"');

# now check all our other items ...

ok(!$Foo->has_method('FOO_CONSTANT'), '... Foo->has_method(FOO_CONSTANT) (defined w/ use constant)');
ok(!$Foo->has_method('bling'), '... Foo->has_method(bling) (defined in main:: using symbol tables (no Sub::Name))');

ok($Foo->has_method('bar'), '... Foo->has_method(bar) (defined in Foo)');
ok($Foo->has_method('baz'), '... Foo->has_method(baz) (typeglob aliased within Foo)');
ok($Foo->has_method('baaz'), '... Foo->has_method(baaz) (typeglob aliased within Foo)');
ok($Foo->has_method('floob'), '... Foo->has_method(floob) (defined in Foo:: using symbol tables and Sub::Name w/out package name)');
ok($Foo->has_method('blah'), '... Foo->has_method(blah) (defined in main:: using fully qualified package name)');
ok($Foo->has_method('bang'), '... Foo->has_method(bang) (defined in main:: using symbol tables and Sub::Name)');
ok($Foo->has_method('evaled_foo'), '... Foo->has_method(evaled_foo) (evaled in main::)');

my $OinkyBoinky = Class::MOP::Class->initialize('OinkyBoinky');

ok($OinkyBoinky->has_method('elk'), "the method 'elk' is defined in OinkyBoinky");

ok(!$OinkyBoinky->has_method('bar'), "the method 'bar' is not defined in OinkyBoinky");

ok(my $bar = $OinkyBoinky->find_method_by_name('bar'), "but if you look in the inheritence chain then 'bar' does exist");

is( reftype($bar->body), "CODE", "the returned value is a code ref" );


# calling get_method blessed them all
for my $method_name (qw/baaz
                        bar
                    	baz
                    	floob
                    	blah
                    	bang
                    	evaled_foo/) {
    isa_ok($Foo->get_method($method_name), 'Class::MOP::Method');
    {
        no strict 'refs';
        is($Foo->get_method($method_name)->body, \&{'Foo::' . $method_name}, '... body matches CODE ref in package for ' . $method_name);
    }
}

for my $method_name (qw/
                    FOO_CONSTANT
                    bling
                    /) {
    is(ref($Foo->get_package_symbol('&' . $method_name)), 'CODE', '... got the __ANON__ methods');
    {
        no strict 'refs';
        is($Foo->get_package_symbol('&' . $method_name), \&{'Foo::' . $method_name}, '... symbol matches CODE ref in package for ' . $method_name);
    }
}

{
    package Foo::Aliasing;
    use metaclass;
    sub alias_me { '...' }
}

$Foo->alias_method('alias_me' => Foo::Aliasing->meta->get_method('alias_me'));

ok(!$Foo->has_method('alias_me'), '... !Foo->has_method(alias_me) (aliased from Foo::Aliasing)');
ok(defined &Foo::alias_me, '... Foo does have a symbol table slow for alias_me though');

ok(!$Foo->has_method('blessed'), '... !Foo->has_method(blessed) (imported into Foo)');
ok(!$Foo->has_method('boom'), '... !Foo->has_method(boom) (defined in main:: using symbol tables and Sub::Name w/out package name)');

ok(!$Foo->has_method('not_a_real_method'), '... !Foo->has_method(not_a_real_method) (does not exist)');
is($Foo->get_method('not_a_real_method'), undef, '... Foo->get_method(not_a_real_method) == undef');

is_deeply(
    [ sort $Foo->get_method_list ],
    [ qw(baaz bang bar baz blah evaled_foo floob foo) ],
    '... got the right method list for Foo');

is_deeply(
    [ sort { $a->{name} cmp $b->{name} } $Foo->compute_all_applicable_methods() ],
    [
        map {
            {
            name  => $_,
            class => 'Foo',
            code  => $Foo->get_method($_)
            }
        } qw(
            baaz            
            bang 
            bar 
            baz 
            blah 
            evaled_foo 
            floob 
            foo
        )
    ],
    '... got the right list of applicable methods for Foo');

is($Foo->remove_method('foo')->body, $foo, '... removed the foo method');
ok(!$Foo->has_method('foo'), '... !Foo->has_method(foo) we just removed it');
dies_ok { Foo->foo } '... cannot call Foo->foo because it is not there';

is_deeply(
    [ sort $Foo->get_method_list ],
    [ qw(baaz bang bar baz blah evaled_foo floob) ],
    '... got the right method list for Foo');

is_deeply(
    [ sort $Foo->get_method_list ],
    [ qw(baaz bang bar baz blah evaled_foo floob) ],
    '... got the right method list for Foo');

# ... test our class creator 

my $Bar = Class::MOP::Class->create(
            'Bar' => (
                superclasses => [ 'Foo' ],
                methods => {
                    foo => sub { 'Bar::foo' },
                    bar => sub { 'Bar::bar' },                    
                }
            ));
isa_ok($Bar, 'Class::MOP::Class');

ok($Bar->has_method('foo'), '... Bar->has_method(foo)');
ok($Bar->has_method('bar'), '... Bar->has_method(bar)');

is(Bar->foo, 'Bar::foo', '... Bar->foo == Bar::foo');
is(Bar->bar, 'Bar::bar', '... Bar->bar == Bar::bar');

lives_ok {
    $Bar->add_method('foo' => sub { 'Bar::foo v2' });
} '... overwriting a method is fine';

ok($Bar->has_method('foo'), '... Bar-> (still) has_method(foo)');
is(Bar->foo, 'Bar::foo v2', '... Bar->foo == "Bar::foo v2"');

is_deeply(
    [ sort $Bar->get_method_list ],
    [ qw(bar foo meta) ],
    '... got the right method list for Bar');  
    
is_deeply(
    [ sort { $a->{name} cmp $b->{name} } $Bar->compute_all_applicable_methods() ],
    [
        {
            name  => 'baaz',
            class => 'Foo',
            code  => $Foo->get_method('baaz')
        },
        {
            name  => 'bang',
            class => 'Foo',
            code  => $Foo->get_method('bang')
        },
        {
            name  => 'bar',
            class => 'Bar',
            code  => $Bar->get_method('bar') 
        },
        (map {
            {
                name  => $_,
                class => 'Foo',
                code  => $Foo->get_method($_)
            }
        } qw(        
            baz 
            blah 
            evaled_foo 
            floob 
        )),
        {
            name  => 'foo',
            class => 'Bar',
            code  => $Bar->get_method('foo')
        },        
        {
            name  => 'meta',
            class => 'Bar',
            code  => $Bar->get_method('meta')
        }        
    ],
    '... got the right list of applicable methods for Bar');
Commit	Line	Data
0882828e	1	#!/usr/bin/perl
	2
	3	use strict;
	4	use warnings;
	5
823a5d31	6	use Test::More tests => 66;
0882828e	7	use Test::Exception;
0882828e	8
16e960bd	9	use Scalar::Util qw/reftype/;
87f3c133	10	use Sub::Name ();
16e960bd	11
0882828e	12	BEGIN {
	13	use_ok('Class::MOP');
	14	use_ok('Class::MOP::Class');
	15	}
	16
bfe4d0fc	17	{ # This package tries to test &has_method
	18	# as exhaustively as possible. More corner
	19	# cases are welcome :)
0882828e	20	package Foo;
	21
	22	# import a sub
	23	use Scalar::Util 'blessed';
	24
823a5d31	25	sub pie;
	26	sub cake ();
	27
bfe4d0fc	28	use constant FOO_CONSTANT => 'Foo-CONSTANT';
bfe4d0fc	29
0882828e	30	# define a sub in package
0882828e	31	sub bar { 'Foo::bar' }
60d90bbc	32	*baz = \&bar;
46b23b44	33
	34	# create something with the typeglob inside the package
	35	*baaz = sub { 'Foo::baaz' };
bfe4d0fc	36
	37	{ # method named with Sub::Name inside the package scope
	38	no strict 'refs';
	39	*{'Foo::floob'} = Sub::Name::subname 'floob' => sub { '!floob!' };
	40	}
	41
60d90bbc	42	# We hateses the "used only once" warnings
46b23b44	43	{
	44	my $temp1 = \&Foo::baz;
	45	my $temp2 = \&Foo::baaz;
	46	}
16e960bd	47
	48	package OinkyBoinky;
	49	our @ISA = "Foo";
	50
	51	sub elk { 'OinkyBoinky::elk' }
60d90bbc	52
	53	package main;
	54
	55	sub Foo::blah { $_[0]->Foo::baz() }
	56
	57	{
	58	no strict 'refs';
	59	*{'Foo::bling'} = sub { '$$Bling$$' };
bfe4d0fc	60	*{'Foo::bang'} = Sub::Name::subname 'Foo::bang' => sub { '!BANG!' };
	61	*{'Foo::boom'} = Sub::Name::subname 'boom' => sub { '!BOOM!' };
	62
	63	eval "package Foo; sub evaled_foo { 'Foo::evaled_foo' }";
60d90bbc	64	}
0882828e	65	}
0882828e	66
bfe4d0fc	67	my $Foo = Class::MOP::Class->initialize('Foo');
0882828e	68
823a5d31	69	ok(!$Foo->has_method('pie'), '... got the method stub pie');
	70	ok(!$Foo->has_method('cake'), '... got the constant method stub cake');
	71
0882828e	72	my $foo = sub { 'Foo::foo' };
0882828e	73
de19f115	74	ok(!UNIVERSAL::isa($foo, 'Class::MOP::Method'), '... our method is not yet blessed');
de19f115	75
0882828e	76	lives_ok {
	77	$Foo->add_method('foo' => $foo);
	78	} '... we added the method successfully';
	79
7855ddba	80	my $foo_method = $Foo->get_method('foo');
de19f115	81
7855ddba	82	isa_ok($foo_method, 'Class::MOP::Method');
	83
	84	is($foo_method->name, 'foo', '... got the right name for the method');
	85	is($foo_method->package_name, 'Foo', '... got the right package name for the method');
de19f115	86
0882828e	87	ok($Foo->has_method('foo'), '... Foo->has_method(foo) (defined with Sub::Name)');
bfe4d0fc	88
7855ddba	89	is($Foo->get_method('foo')->body, $foo, '... Foo->get_method(foo) == \&foo');
bfe4d0fc	90	is(Foo->foo(), 'Foo::foo', '... Foo->foo() returns "Foo::foo"');
	91
	92	# now check all our other items ...
	93
46b23b44	94	ok(!$Foo->has_method('FOO_CONSTANT'), '... Foo->has_method(FOO_CONSTANT) (defined w/ use constant)');
	95	ok(!$Foo->has_method('bling'), '... Foo->has_method(bling) (defined in main:: using symbol tables (no Sub::Name))');
	96
0882828e	97	ok($Foo->has_method('bar'), '... Foo->has_method(bar) (defined in Foo)');
60d90bbc	98	ok($Foo->has_method('baz'), '... Foo->has_method(baz) (typeglob aliased within Foo)');
46b23b44	99	ok($Foo->has_method('baaz'), '... Foo->has_method(baaz) (typeglob aliased within Foo)');
bfe4d0fc	100	ok($Foo->has_method('floob'), '... Foo->has_method(floob) (defined in Foo:: using symbol tables and Sub::Name w/out package name)');
60d90bbc	101	ok($Foo->has_method('blah'), '... Foo->has_method(blah) (defined in main:: using fully qualified package name)');
60d90bbc	102	ok($Foo->has_method('bang'), '... Foo->has_method(bang) (defined in main:: using symbol tables and Sub::Name)');
bfe4d0fc	103	ok($Foo->has_method('evaled_foo'), '... Foo->has_method(evaled_foo) (evaled in main::)');
0882828e	104
16e960bd	105	my $OinkyBoinky = Class::MOP::Class->initialize('OinkyBoinky');
	106
	107	ok($OinkyBoinky->has_method('elk'), "the method 'elk' is defined in OinkyBoinky");
	108
	109	ok(!$OinkyBoinky->has_method('bar'), "the method 'bar' is not defined in OinkyBoinky");
	110
	111	ok(my $bar = $OinkyBoinky->find_method_by_name('bar'), "but if you look in the inheritence chain then 'bar' does exist");
	112
b9575695	113	is( reftype($bar->body), "CODE", "the returned value is a code ref" );
16e960bd	114
16e960bd	115
de19f115	116	# calling get_method blessed them all
46b23b44	117	for my $method_name (qw/baaz
46b23b44	118	bar
7855ddba	119	baz
7855ddba	120	floob
46b23b44	121	blah
46b23b44	122	bang
7855ddba	123	evaled_foo/) {
	124	isa_ok($Foo->get_method($method_name), 'Class::MOP::Method');
	125	{
	126	no strict 'refs';
187c832e	127	is($Foo->get_method($method_name)->body, \&{'Foo::' . $method_name}, '... body matches CODE ref in package for ' . $method_name);
7855ddba	128	}
7855ddba	129	}
de19f115	130
46b23b44	131	for my $method_name (qw/
	132	FOO_CONSTANT
	133	bling
	134	/) {
	135	is(ref($Foo->get_package_symbol('&' . $method_name)), 'CODE', '... got the __ANON__ methods');
	136	{
	137	no strict 'refs';
	138	is($Foo->get_package_symbol('&' . $method_name), \&{'Foo::' . $method_name}, '... symbol matches CODE ref in package for ' . $method_name);
	139	}
	140	}
	141
663f8198	142	{
	143	package Foo::Aliasing;
	144	use metaclass;
	145	sub alias_me { '...' }
	146	}
	147
	148	$Foo->alias_method('alias_me' => Foo::Aliasing->meta->get_method('alias_me'));
	149
	150	ok(!$Foo->has_method('alias_me'), '... !Foo->has_method(alias_me) (aliased from Foo::Aliasing)');
	151	ok(defined &Foo::alias_me, '... Foo does have a symbol table slow for alias_me though');
	152
bfe4d0fc	153	ok(!$Foo->has_method('blessed'), '... !Foo->has_method(blessed) (imported into Foo)');
bfe4d0fc	154	ok(!$Foo->has_method('boom'), '... !Foo->has_method(boom) (defined in main:: using symbol tables and Sub::Name w/out package name)');
0882828e	155
bfe4d0fc	156	ok(!$Foo->has_method('not_a_real_method'), '... !Foo->has_method(not_a_real_method) (does not exist)');
	157	is($Foo->get_method('not_a_real_method'), undef, '... Foo->get_method(not_a_real_method) == undef');
	158
c9b8b7f9	159	is_deeply(
c9b8b7f9	160	[ sort $Foo->get_method_list ],
46b23b44	161	[ qw(baaz bang bar baz blah evaled_foo floob foo) ],
c9b8b7f9	162	'... got the right method list for Foo');
c9b8b7f9	163
a5eca695	164	is_deeply(
	165	[ sort { $a->{name} cmp $b->{name} } $Foo->compute_all_applicable_methods() ],
	166	[
	167	map {
	168	{
	169	name => $_,
	170	class => 'Foo',
7855ddba	171	code => $Foo->get_method($_)
a5eca695	172	}
a5eca695	173	} qw(
46b23b44	174	baaz
a5eca695	175	bang
	176	bar
	177	baz
	178	blah
a5eca695	179	evaled_foo
	180	floob
	181	foo
	182	)
	183	],
	184	'... got the right list of applicable methods for Foo');
	185
7855ddba	186	is($Foo->remove_method('foo')->body, $foo, '... removed the foo method');
c9b8b7f9	187	ok(!$Foo->has_method('foo'), '... !Foo->has_method(foo) we just removed it');
	188	dies_ok { Foo->foo } '... cannot call Foo->foo because it is not there';
	189
	190	is_deeply(
	191	[ sort $Foo->get_method_list ],
46b23b44	192	[ qw(baaz bang bar baz blah evaled_foo floob) ],
c9b8b7f9	193	'... got the right method list for Foo');
c9b8b7f9	194
c9b8b7f9	195	is_deeply(
c9b8b7f9	196	[ sort $Foo->get_method_list ],
46b23b44	197	[ qw(baaz bang bar baz blah evaled_foo floob) ],
c9b8b7f9	198	'... got the right method list for Foo');
c9b8b7f9	199
bfe4d0fc	200	# ... test our class creator
	201
	202	my $Bar = Class::MOP::Class->create(
88dd563c	203	'Bar' => (
c9b8b7f9	204	superclasses => [ 'Foo' ],
bfe4d0fc	205	methods => {
	206	foo => sub { 'Bar::foo' },
	207	bar => sub { 'Bar::bar' },
	208	}
	209	));
	210	isa_ok($Bar, 'Class::MOP::Class');
	211
	212	ok($Bar->has_method('foo'), '... Bar->has_method(foo)');
	213	ok($Bar->has_method('bar'), '... Bar->has_method(bar)');
	214
	215	is(Bar->foo, 'Bar::foo', '... Bar->foo == Bar::foo');
	216	is(Bar->bar, 'Bar::bar', '... Bar->bar == Bar::bar');
	217
	218	lives_ok {
	219	$Bar->add_method('foo' => sub { 'Bar::foo v2' });
	220	} '... overwriting a method is fine';
	221
	222	ok($Bar->has_method('foo'), '... Bar-> (still) has_method(foo)');
	223	is(Bar->foo, 'Bar::foo v2', '... Bar->foo == "Bar::foo v2"');
c9b8b7f9	224
	225	is_deeply(
	226	[ sort $Bar->get_method_list ],
aa448b16	227	[ qw(bar foo meta) ],
a5eca695	228	'... got the right method list for Bar');
	229
	230	is_deeply(
	231	[ sort { $a->{name} cmp $b->{name} } $Bar->compute_all_applicable_methods() ],
	232	[
	233	{
46b23b44	234	name => 'baaz',
	235	class => 'Foo',
	236	code => $Foo->get_method('baaz')
	237	},
	238	{
a5eca695	239	name => 'bang',
a5eca695	240	class => 'Foo',
7855ddba	241	code => $Foo->get_method('bang')
a5eca695	242	},
	243	{
	244	name => 'bar',
	245	class => 'Bar',
7855ddba	246	code => $Bar->get_method('bar')
a5eca695	247	},
	248	(map {
	249	{
	250	name => $_,
	251	class => 'Foo',
7855ddba	252	code => $Foo->get_method($_)
a5eca695	253	}
	254	} qw(
	255	baz
	256	blah
a5eca695	257	evaled_foo
	258	floob
	259	)),
	260	{
	261	name => 'foo',
	262	class => 'Bar',
7855ddba	263	code => $Bar->get_method('foo')
a5eca695	264	},
aa448b16	265	{
	266	name => 'meta',
	267	class => 'Bar',
7855ddba	268	code => $Bar->get_method('meta')
aa448b16	269	}
a5eca695	270	],
	271	'... got the right list of applicable methods for Bar');
	272
	273