[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/;

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;

    { # 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 $temp = \&Foo::baz }
    
    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('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('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('bling'), '... Foo->has_method(bling) (defined in main:: using symbol tables (no Sub::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 $method_name (qw/FOO_CONSTANT
                    	bar
                    	baz
                    	floob
                    	blah		
                    	bling
                    	bang	
                    	evaled_foo/) {
    isa_ok($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);
    }
}

{
    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 bang bar baz blah bling 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
            bang 
            bar 
            baz 
            blah 
            bling 
            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 bang bar baz blah bling evaled_foo floob) ],
    '... got the right method list for Foo');

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

is_deeply(
    [ sort $Foo->get_method_list ],
    [ qw(bang bar baz blah bling 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  => '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 
            bling 
            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/;
16e960bd	10
0882828e	11	BEGIN {
	12	use_ok('Class::MOP');
	13	use_ok('Class::MOP::Class');
	14	}
	15
bfe4d0fc	16	{ # This package tries to test &has_method
	17	# as exhaustively as possible. More corner
	18	# cases are welcome :)
0882828e	19	package Foo;
	20
	21	# import a sub
	22	use Scalar::Util 'blessed';
	23
823a5d31	24	sub pie;
	25	sub cake ();
	26
bfe4d0fc	27	use constant FOO_CONSTANT => 'Foo-CONSTANT';
bfe4d0fc	28
0882828e	29	# define a sub in package
0882828e	30	sub bar { 'Foo::bar' }
60d90bbc	31	*baz = \&bar;
bfe4d0fc	32
	33	{ # method named with Sub::Name inside the package scope
	34	no strict 'refs';
	35	*{'Foo::floob'} = Sub::Name::subname 'floob' => sub { '!floob!' };
	36	}
	37
60d90bbc	38	# We hateses the "used only once" warnings
60d90bbc	39	{ my $temp = \&Foo::baz }
16e960bd	40
	41	package OinkyBoinky;
	42	our @ISA = "Foo";
	43
	44	sub elk { 'OinkyBoinky::elk' }
60d90bbc	45
	46	package main;
	47
	48	sub Foo::blah { $_[0]->Foo::baz() }
	49
	50	{
	51	no strict 'refs';
	52	*{'Foo::bling'} = sub { '$$Bling$$' };
bfe4d0fc	53	*{'Foo::bang'} = Sub::Name::subname 'Foo::bang' => sub { '!BANG!' };
	54	*{'Foo::boom'} = Sub::Name::subname 'boom' => sub { '!BOOM!' };
	55
	56	eval "package Foo; sub evaled_foo { 'Foo::evaled_foo' }";
60d90bbc	57	}
0882828e	58	}
0882828e	59
bfe4d0fc	60	my $Foo = Class::MOP::Class->initialize('Foo');
0882828e	61
823a5d31	62	ok(!$Foo->has_method('pie'), '... got the method stub pie');
	63	ok(!$Foo->has_method('cake'), '... got the constant method stub cake');
	64
0882828e	65	my $foo = sub { 'Foo::foo' };
0882828e	66
de19f115	67	ok(!UNIVERSAL::isa($foo, 'Class::MOP::Method'), '... our method is not yet blessed');
de19f115	68
0882828e	69	lives_ok {
	70	$Foo->add_method('foo' => $foo);
	71	} '... we added the method successfully';
	72
7855ddba	73	my $foo_method = $Foo->get_method('foo');
de19f115	74
7855ddba	75	isa_ok($foo_method, 'Class::MOP::Method');
	76
	77	is($foo_method->name, 'foo', '... got the right name for the method');
	78	is($foo_method->package_name, 'Foo', '... got the right package name for the method');
de19f115	79
0882828e	80	ok($Foo->has_method('foo'), '... Foo->has_method(foo) (defined with Sub::Name)');
bfe4d0fc	81
7855ddba	82	is($Foo->get_method('foo')->body, $foo, '... Foo->get_method(foo) == \&foo');
bfe4d0fc	83	is(Foo->foo(), 'Foo::foo', '... Foo->foo() returns "Foo::foo"');
	84
	85	# now check all our other items ...
	86
92af7fdf	87	ok($Foo->has_method('FOO_CONSTANT'), '... Foo->has_method(FOO_CONSTANT) (defined w/ use constant)');
0882828e	88	ok($Foo->has_method('bar'), '... Foo->has_method(bar) (defined in Foo)');
60d90bbc	89	ok($Foo->has_method('baz'), '... Foo->has_method(baz) (typeglob aliased within Foo)');
bfe4d0fc	90	ok($Foo->has_method('floob'), '... Foo->has_method(floob) (defined in Foo:: using symbol tables and Sub::Name w/out package name)');
60d90bbc	91	ok($Foo->has_method('blah'), '... Foo->has_method(blah) (defined in main:: using fully qualified package name)');
bfe4d0fc	92	ok($Foo->has_method('bling'), '... Foo->has_method(bling) (defined in main:: using symbol tables (no Sub::Name))');
60d90bbc	93	ok($Foo->has_method('bang'), '... Foo->has_method(bang) (defined in main:: using symbol tables and Sub::Name)');
bfe4d0fc	94	ok($Foo->has_method('evaled_foo'), '... Foo->has_method(evaled_foo) (evaled in main::)');
0882828e	95
16e960bd	96	my $OinkyBoinky = Class::MOP::Class->initialize('OinkyBoinky');
	97
	98	ok($OinkyBoinky->has_method('elk'), "the method 'elk' is defined in OinkyBoinky");
	99
	100	ok(!$OinkyBoinky->has_method('bar'), "the method 'bar' is not defined in OinkyBoinky");
	101
	102	ok(my $bar = $OinkyBoinky->find_method_by_name('bar'), "but if you look in the inheritence chain then 'bar' does exist");
	103
b9575695	104	is( reftype($bar->body), "CODE", "the returned value is a code ref" );
16e960bd	105
16e960bd	106
de19f115	107	# calling get_method blessed them all
7855ddba	108	for my $method_name (qw/FOO_CONSTANT
	109	bar
	110	baz
	111	floob
	112	blah
	113	bling
	114	bang
	115	evaled_foo/) {
	116	isa_ok($Foo->get_method($method_name), 'Class::MOP::Method');
	117	{
	118	no strict 'refs';
187c832e	119	is($Foo->get_method($method_name)->body, \&{'Foo::' . $method_name}, '... body matches CODE ref in package for ' . $method_name);
7855ddba	120	}
7855ddba	121	}
de19f115	122
663f8198	123	{
	124	package Foo::Aliasing;
	125	use metaclass;
	126	sub alias_me { '...' }
	127	}
	128
	129	$Foo->alias_method('alias_me' => Foo::Aliasing->meta->get_method('alias_me'));
	130
	131	ok(!$Foo->has_method('alias_me'), '... !Foo->has_method(alias_me) (aliased from Foo::Aliasing)');
	132	ok(defined &Foo::alias_me, '... Foo does have a symbol table slow for alias_me though');
	133
bfe4d0fc	134	ok(!$Foo->has_method('blessed'), '... !Foo->has_method(blessed) (imported into Foo)');
bfe4d0fc	135	ok(!$Foo->has_method('boom'), '... !Foo->has_method(boom) (defined in main:: using symbol tables and Sub::Name w/out package name)');
0882828e	136
bfe4d0fc	137	ok(!$Foo->has_method('not_a_real_method'), '... !Foo->has_method(not_a_real_method) (does not exist)');
	138	is($Foo->get_method('not_a_real_method'), undef, '... Foo->get_method(not_a_real_method) == undef');
	139
c9b8b7f9	140	is_deeply(
	141	[ sort $Foo->get_method_list ],
	142	[ qw(FOO_CONSTANT bang bar baz blah bling evaled_foo floob foo) ],
	143	'... got the right method list for Foo');
	144
a5eca695	145	is_deeply(
	146	[ sort { $a->{name} cmp $b->{name} } $Foo->compute_all_applicable_methods() ],
	147	[
	148	map {
	149	{
	150	name => $_,
	151	class => 'Foo',
7855ddba	152	code => $Foo->get_method($_)
a5eca695	153	}
	154	} qw(
	155	FOO_CONSTANT
	156	bang
	157	bar
	158	baz
	159	blah
	160	bling
	161	evaled_foo
	162	floob
	163	foo
	164	)
	165	],
	166	'... got the right list of applicable methods for Foo');
	167
7855ddba	168	is($Foo->remove_method('foo')->body, $foo, '... removed the foo method');
c9b8b7f9	169	ok(!$Foo->has_method('foo'), '... !Foo->has_method(foo) we just removed it');
	170	dies_ok { Foo->foo } '... cannot call Foo->foo because it is not there';
	171
	172	is_deeply(
	173	[ sort $Foo->get_method_list ],
	174	[ qw(FOO_CONSTANT bang bar baz blah bling evaled_foo floob) ],
	175	'... got the right method list for Foo');
	176
	177	ok($Foo->remove_method('FOO_CONSTANT'), '... removed the FOO_CONSTANT method');
	178	ok(!$Foo->has_method('FOO_CONSTANT'), '... !Foo->has_method(FOO_CONSTANT) we just removed it');
	179	dies_ok { Foo->FOO_CONSTANT } '... cannot call Foo->FOO_CONSTANT because it is not there';
	180
	181	is_deeply(
	182	[ sort $Foo->get_method_list ],
	183	[ qw(bang bar baz blah bling evaled_foo floob) ],
	184	'... got the right method list for Foo');
	185
bfe4d0fc	186	# ... test our class creator
	187
	188	my $Bar = Class::MOP::Class->create(
88dd563c	189	'Bar' => (
c9b8b7f9	190	superclasses => [ 'Foo' ],
bfe4d0fc	191	methods => {
	192	foo => sub { 'Bar::foo' },
	193	bar => sub { 'Bar::bar' },
	194	}
	195	));
	196	isa_ok($Bar, 'Class::MOP::Class');
	197
	198	ok($Bar->has_method('foo'), '... Bar->has_method(foo)');
	199	ok($Bar->has_method('bar'), '... Bar->has_method(bar)');
	200
	201	is(Bar->foo, 'Bar::foo', '... Bar->foo == Bar::foo');
	202	is(Bar->bar, 'Bar::bar', '... Bar->bar == Bar::bar');
	203
	204	lives_ok {
	205	$Bar->add_method('foo' => sub { 'Bar::foo v2' });
	206	} '... overwriting a method is fine';
	207
	208	ok($Bar->has_method('foo'), '... Bar-> (still) has_method(foo)');
	209	is(Bar->foo, 'Bar::foo v2', '... Bar->foo == "Bar::foo v2"');
c9b8b7f9	210
	211	is_deeply(
	212	[ sort $Bar->get_method_list ],
aa448b16	213	[ qw(bar foo meta) ],
a5eca695	214	'... got the right method list for Bar');
	215
	216	is_deeply(
	217	[ sort { $a->{name} cmp $b->{name} } $Bar->compute_all_applicable_methods() ],
	218	[
	219	{
	220	name => 'bang',
	221	class => 'Foo',
7855ddba	222	code => $Foo->get_method('bang')
a5eca695	223	},
	224	{
	225	name => 'bar',
	226	class => 'Bar',
7855ddba	227	code => $Bar->get_method('bar')
a5eca695	228	},
	229	(map {
	230	{
	231	name => $_,
	232	class => 'Foo',
7855ddba	233	code => $Foo->get_method($_)
a5eca695	234	}
	235	} qw(
	236	baz
	237	blah
	238	bling
	239	evaled_foo
	240	floob
	241	)),
	242	{
	243	name => 'foo',
	244	class => 'Bar',
7855ddba	245	code => $Bar->get_method('foo')
a5eca695	246	},
aa448b16	247	{
	248	name => 'meta',
	249	class => 'Bar',
7855ddba	250	code => $Bar->get_method('meta')
aa448b16	251	}
a5eca695	252	],
	253	'... got the right list of applicable methods for Bar');
	254
	255