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

#!/usr/bin/perl

use strict;
use warnings;

use Test::More;
use Test::Exception;

use Scalar::Util qw/reftype/;

BEGIN {
    if ( eval 'use Sub::Name ();' ) {
        plan tests => 65;
    }
    else {
        plan skip_all => 'These tests require 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($Foo->has_method('FOO_CONSTANT'), '... not Foo->has_method(FOO_CONSTANT) (defined w/ use constant)');
ok(!$Foo->has_method('bling'), '... not 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 $method_name (qw/baaz
                        bar
                    	baz
                    	floob
                    	blah
                    	bang
                    	evaled_foo
                    	FOO_CONSTANT/) {
    isa_ok($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 $method_name (qw/
                    bling
                    /) {
    is(ref($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(FOO_CONSTANT 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(
            FOO_CONSTANT
            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(FOO_CONSTANT 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  => 'FOO_CONSTANT',
            class => 'Foo',
            code  => $Foo->get_method('FOO_CONSTANT')
        },    
        {
            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
e896822d	6	use Test::More;
0882828e	7	use Test::Exception;
0882828e	8
16e960bd	9	use Scalar::Util qw/reftype/;
e896822d	10
	11	BEGIN {
	12	if ( eval 'use Sub::Name ();' ) {
	13	plan tests => 65;
	14	}
	15	else {
	16	plan skip_all => 'These tests require Sub::Name';
	17	}
	18	}
16e960bd	19
0882828e	20	BEGIN {
	21	use_ok('Class::MOP');
	22	use_ok('Class::MOP::Class');
	23	}
	24
bfe4d0fc	25	{ # This package tries to test &has_method
	26	# as exhaustively as possible. More corner
	27	# cases are welcome :)
0882828e	28	package Foo;
	29
	30	# import a sub
	31	use Scalar::Util 'blessed';
	32
823a5d31	33	sub pie;
	34	sub cake ();
	35
bfe4d0fc	36	use constant FOO_CONSTANT => 'Foo-CONSTANT';
bfe4d0fc	37
0882828e	38	# define a sub in package
0882828e	39	sub bar { 'Foo::bar' }
60d90bbc	40	*baz = \&bar;
46b23b44	41
	42	# create something with the typeglob inside the package
	43	*baaz = sub { 'Foo::baaz' };
bfe4d0fc	44
	45	{ # method named with Sub::Name inside the package scope
	46	no strict 'refs';
	47	*{'Foo::floob'} = Sub::Name::subname 'floob' => sub { '!floob!' };
	48	}
	49
60d90bbc	50	# We hateses the "used only once" warnings
46b23b44	51	{
	52	my $temp1 = \&Foo::baz;
	53	my $temp2 = \&Foo::baaz;
	54	}
16e960bd	55
	56	package OinkyBoinky;
	57	our @ISA = "Foo";
	58
	59	sub elk { 'OinkyBoinky::elk' }
60d90bbc	60
	61	package main;
	62
	63	sub Foo::blah { $_[0]->Foo::baz() }
	64
	65	{
	66	no strict 'refs';
	67	*{'Foo::bling'} = sub { '$$Bling$$' };
bfe4d0fc	68	*{'Foo::bang'} = Sub::Name::subname 'Foo::bang' => sub { '!BANG!' };
	69	*{'Foo::boom'} = Sub::Name::subname 'boom' => sub { '!BOOM!' };
	70
	71	eval "package Foo; sub evaled_foo { 'Foo::evaled_foo' }";
60d90bbc	72	}
0882828e	73	}
0882828e	74
bfe4d0fc	75	my $Foo = Class::MOP::Class->initialize('Foo');
0882828e	76
823a5d31	77	ok(!$Foo->has_method('pie'), '... got the method stub pie');
	78	ok(!$Foo->has_method('cake'), '... got the constant method stub cake');
	79
0882828e	80	my $foo = sub { 'Foo::foo' };
0882828e	81
de19f115	82	ok(!UNIVERSAL::isa($foo, 'Class::MOP::Method'), '... our method is not yet blessed');
de19f115	83
0882828e	84	lives_ok {
	85	$Foo->add_method('foo' => $foo);
	86	} '... we added the method successfully';
	87
7855ddba	88	my $foo_method = $Foo->get_method('foo');
de19f115	89
7855ddba	90	isa_ok($foo_method, 'Class::MOP::Method');
	91
	92	is($foo_method->name, 'foo', '... got the right name for the method');
	93	is($foo_method->package_name, 'Foo', '... got the right package name for the method');
de19f115	94
0882828e	95	ok($Foo->has_method('foo'), '... Foo->has_method(foo) (defined with Sub::Name)');
bfe4d0fc	96
7855ddba	97	is($Foo->get_method('foo')->body, $foo, '... Foo->get_method(foo) == \&foo');
bfe4d0fc	98	is(Foo->foo(), 'Foo::foo', '... Foo->foo() returns "Foo::foo"');
	99
	100	# now check all our other items ...
	101
d7d3f3cb	102	ok($Foo->has_method('FOO_CONSTANT'), '... not Foo->has_method(FOO_CONSTANT) (defined w/ use constant)');
d7d3f3cb	103	ok(!$Foo->has_method('bling'), '... not Foo->has_method(bling) (defined in main:: using symbol tables (no Sub::Name))');
46b23b44	104
0882828e	105	ok($Foo->has_method('bar'), '... Foo->has_method(bar) (defined in Foo)');
60d90bbc	106	ok($Foo->has_method('baz'), '... Foo->has_method(baz) (typeglob aliased within Foo)');
46b23b44	107	ok($Foo->has_method('baaz'), '... Foo->has_method(baaz) (typeglob aliased within Foo)');
bfe4d0fc	108	ok($Foo->has_method('floob'), '... Foo->has_method(floob) (defined in Foo:: using symbol tables and Sub::Name w/out package name)');
60d90bbc	109	ok($Foo->has_method('blah'), '... Foo->has_method(blah) (defined in main:: using fully qualified package name)');
60d90bbc	110	ok($Foo->has_method('bang'), '... Foo->has_method(bang) (defined in main:: using symbol tables and Sub::Name)');
bfe4d0fc	111	ok($Foo->has_method('evaled_foo'), '... Foo->has_method(evaled_foo) (evaled in main::)');
0882828e	112
16e960bd	113	my $OinkyBoinky = Class::MOP::Class->initialize('OinkyBoinky');
	114
	115	ok($OinkyBoinky->has_method('elk'), "the method 'elk' is defined in OinkyBoinky");
	116
	117	ok(!$OinkyBoinky->has_method('bar'), "the method 'bar' is not defined in OinkyBoinky");
	118
	119	ok(my $bar = $OinkyBoinky->find_method_by_name('bar'), "but if you look in the inheritence chain then 'bar' does exist");
	120
b9575695	121	is( reftype($bar->body), "CODE", "the returned value is a code ref" );
16e960bd	122
16e960bd	123
de19f115	124	# calling get_method blessed them all
46b23b44	125	for my $method_name (qw/baaz
46b23b44	126	bar
7855ddba	127	baz
7855ddba	128	floob
46b23b44	129	blah
46b23b44	130	bang
d7d3f3cb	131	evaled_foo
d7d3f3cb	132	FOO_CONSTANT/) {
7855ddba	133	isa_ok($Foo->get_method($method_name), 'Class::MOP::Method');
	134	{
	135	no strict 'refs';
187c832e	136	is($Foo->get_method($method_name)->body, \&{'Foo::' . $method_name}, '... body matches CODE ref in package for ' . $method_name);
7855ddba	137	}
7855ddba	138	}
de19f115	139
46b23b44	140	for my $method_name (qw/
46b23b44	141	bling
	142	/) {
	143	is(ref($Foo->get_package_symbol('&' . $method_name)), 'CODE', '... got the __ANON__ methods');
	144	{
	145	no strict 'refs';
	146	is($Foo->get_package_symbol('&' . $method_name), \&{'Foo::' . $method_name}, '... symbol matches CODE ref in package for ' . $method_name);
	147	}
	148	}
	149
663f8198	150	{
	151	package Foo::Aliasing;
	152	use metaclass;
	153	sub alias_me { '...' }
	154	}
	155
	156	$Foo->alias_method('alias_me' => Foo::Aliasing->meta->get_method('alias_me'));
	157
	158	ok(!$Foo->has_method('alias_me'), '... !Foo->has_method(alias_me) (aliased from Foo::Aliasing)');
	159	ok(defined &Foo::alias_me, '... Foo does have a symbol table slow for alias_me though');
	160
bfe4d0fc	161	ok(!$Foo->has_method('blessed'), '... !Foo->has_method(blessed) (imported into Foo)');
bfe4d0fc	162	ok(!$Foo->has_method('boom'), '... !Foo->has_method(boom) (defined in main:: using symbol tables and Sub::Name w/out package name)');
0882828e	163
bfe4d0fc	164	ok(!$Foo->has_method('not_a_real_method'), '... !Foo->has_method(not_a_real_method) (does not exist)');
	165	is($Foo->get_method('not_a_real_method'), undef, '... Foo->get_method(not_a_real_method) == undef');
	166
c9b8b7f9	167	is_deeply(
c9b8b7f9	168	[ sort $Foo->get_method_list ],
d7d3f3cb	169	[ qw(FOO_CONSTANT baaz bang bar baz blah evaled_foo floob foo) ],
c9b8b7f9	170	'... got the right method list for Foo');
c9b8b7f9	171
a5eca695	172	is_deeply(
	173	[ sort { $a->{name} cmp $b->{name} } $Foo->compute_all_applicable_methods() ],
	174	[
	175	map {
	176	{
	177	name => $_,
	178	class => 'Foo',
7855ddba	179	code => $Foo->get_method($_)
a5eca695	180	}
a5eca695	181	} qw(
d7d3f3cb	182	FOO_CONSTANT
46b23b44	183	baaz
a5eca695	184	bang
	185	bar
	186	baz
	187	blah
a5eca695	188	evaled_foo
	189	floob
	190	foo
	191	)
	192	],
	193	'... got the right list of applicable methods for Foo');
	194
7855ddba	195	is($Foo->remove_method('foo')->body, $foo, '... removed the foo method');
c9b8b7f9	196	ok(!$Foo->has_method('foo'), '... !Foo->has_method(foo) we just removed it');
	197	dies_ok { Foo->foo } '... cannot call Foo->foo because it is not there';
	198
	199	is_deeply(
	200	[ sort $Foo->get_method_list ],
d7d3f3cb	201	[ qw(FOO_CONSTANT baaz bang bar baz blah evaled_foo floob) ],
c9b8b7f9	202	'... got the right method list for Foo');
c9b8b7f9	203
c9b8b7f9	204
bfe4d0fc	205	# ... test our class creator
	206
	207	my $Bar = Class::MOP::Class->create(
88dd563c	208	'Bar' => (
c9b8b7f9	209	superclasses => [ 'Foo' ],
bfe4d0fc	210	methods => {
	211	foo => sub { 'Bar::foo' },
	212	bar => sub { 'Bar::bar' },
	213	}
	214	));
	215	isa_ok($Bar, 'Class::MOP::Class');
	216
	217	ok($Bar->has_method('foo'), '... Bar->has_method(foo)');
	218	ok($Bar->has_method('bar'), '... Bar->has_method(bar)');
	219
	220	is(Bar->foo, 'Bar::foo', '... Bar->foo == Bar::foo');
	221	is(Bar->bar, 'Bar::bar', '... Bar->bar == Bar::bar');
	222
	223	lives_ok {
	224	$Bar->add_method('foo' => sub { 'Bar::foo v2' });
	225	} '... overwriting a method is fine';
	226
	227	ok($Bar->has_method('foo'), '... Bar-> (still) has_method(foo)');
	228	is(Bar->foo, 'Bar::foo v2', '... Bar->foo == "Bar::foo v2"');
c9b8b7f9	229
	230	is_deeply(
	231	[ sort $Bar->get_method_list ],
aa448b16	232	[ qw(bar foo meta) ],
a5eca695	233	'... got the right method list for Bar');
	234
	235	is_deeply(
	236	[ sort { $a->{name} cmp $b->{name} } $Bar->compute_all_applicable_methods() ],
	237	[
	238	{
d7d3f3cb	239	name => 'FOO_CONSTANT',
	240	class => 'Foo',
	241	code => $Foo->get_method('FOO_CONSTANT')
	242	},
	243	{
46b23b44	244	name => 'baaz',
	245	class => 'Foo',
	246	code => $Foo->get_method('baaz')
	247	},
	248	{
a5eca695	249	name => 'bang',
a5eca695	250	class => 'Foo',
7855ddba	251	code => $Foo->get_method('bang')
a5eca695	252	},
	253	{
	254	name => 'bar',
	255	class => 'Bar',
7855ddba	256	code => $Bar->get_method('bar')
a5eca695	257	},
	258	(map {
	259	{
	260	name => $_,
	261	class => 'Foo',
7855ddba	262	code => $Foo->get_method($_)
a5eca695	263	}
	264	} qw(
	265	baz
	266	blah
a5eca695	267	evaled_foo
	268	floob
	269	)),
	270	{
	271	name => 'foo',
	272	class => 'Bar',
7855ddba	273	code => $Bar->get_method('foo')
a5eca695	274	},
aa448b16	275	{
	276	name => 'meta',
	277	class => 'Bar',
7855ddba	278	code => $Bar->get_method('meta')
aa448b16	279	}
a5eca695	280	],
	281	'... got the right list of applicable methods for Bar');
	282
	283