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

#!/usr/bin/perl

use strict;
use warnings;

use Test::More tests => 52;
use Test::Exception;

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'; 
    
    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 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');

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';

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

is($foo->name, 'foo', '... got the right name for the method');
is($foo->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'), $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::)');

# calling get_method blessed them all
isa_ok($_, 'Class::MOP::Method') for (
	\&Foo::FOO_CONSTANT,
	\&Foo::bar,
	\&Foo::baz,		
	\&Foo::floob,
	\&Foo::blah,		
	\&Foo::bling,	
	\&Foo::bang,	
	\&Foo::evaled_foo,	
	);

{
    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'), $foo, '... removed the foo method');
ok(!$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 $Bar = Class::MOP::Class->create(
            'Bar' => '0.10' => (
                superclasses => [ 'Foo' ],
                methods => {
                    foo => sub { 'Bar::foo' },
                    bar => sub { 'Bar::bar' },                    
                }
            ));
isa_ok($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
de19f115	6	use Test::More tests => 52;
0882828e	7	use Test::Exception;
	8
	9	BEGIN {
	10	use_ok('Class::MOP');
	11	use_ok('Class::MOP::Class');
	12	}
	13
bfe4d0fc	14	{ # This package tries to test &has_method
	15	# as exhaustively as possible. More corner
	16	# cases are welcome :)
0882828e	17	package Foo;
	18
	19	# import a sub
	20	use Scalar::Util 'blessed';
	21
bfe4d0fc	22	use constant FOO_CONSTANT => 'Foo-CONSTANT';
bfe4d0fc	23
0882828e	24	# define a sub in package
0882828e	25	sub bar { 'Foo::bar' }
60d90bbc	26	*baz = \&bar;
bfe4d0fc	27
	28	{ # method named with Sub::Name inside the package scope
	29	no strict 'refs';
	30	*{'Foo::floob'} = Sub::Name::subname 'floob' => sub { '!floob!' };
	31	}
	32
60d90bbc	33	# We hateses the "used only once" warnings
	34	{ my $temp = \&Foo::baz }
	35
	36	package main;
	37
	38	sub Foo::blah { $_[0]->Foo::baz() }
	39
	40	{
	41	no strict 'refs';
	42	*{'Foo::bling'} = sub { '$$Bling$$' };
bfe4d0fc	43	*{'Foo::bang'} = Sub::Name::subname 'Foo::bang' => sub { '!BANG!' };
	44	*{'Foo::boom'} = Sub::Name::subname 'boom' => sub { '!BOOM!' };
	45
	46	eval "package Foo; sub evaled_foo { 'Foo::evaled_foo' }";
60d90bbc	47	}
0882828e	48	}
0882828e	49
bfe4d0fc	50	my $Foo = Class::MOP::Class->initialize('Foo');
0882828e	51
	52	my $foo = sub { 'Foo::foo' };
	53
de19f115	54	ok(!UNIVERSAL::isa($foo, 'Class::MOP::Method'), '... our method is not yet blessed');
de19f115	55
0882828e	56	lives_ok {
	57	$Foo->add_method('foo' => $foo);
	58	} '... we added the method successfully';
	59
de19f115	60	isa_ok($foo, 'Class::MOP::Method');
	61
	62	is($foo->name, 'foo', '... got the right name for the method');
	63	is($foo->package_name, 'Foo', '... got the right package name for the method');
	64
0882828e	65	ok($Foo->has_method('foo'), '... Foo->has_method(foo) (defined with Sub::Name)');
bfe4d0fc	66
	67	is($Foo->get_method('foo'), $foo, '... Foo->get_method(foo) == \&foo');
	68	is(Foo->foo(), 'Foo::foo', '... Foo->foo() returns "Foo::foo"');
	69
	70	# now check all our other items ...
	71
	72	ok($Foo->has_method('FOO_CONSTANT'), '... Foo->has_method(FOO_CONSTANT) (defined w/ use constant)');
0882828e	73	ok($Foo->has_method('bar'), '... Foo->has_method(bar) (defined in Foo)');
60d90bbc	74	ok($Foo->has_method('baz'), '... Foo->has_method(baz) (typeglob aliased within Foo)');
bfe4d0fc	75	ok($Foo->has_method('floob'), '... Foo->has_method(floob) (defined in Foo:: using symbol tables and Sub::Name w/out package name)');
60d90bbc	76	ok($Foo->has_method('blah'), '... Foo->has_method(blah) (defined in main:: using fully qualified package name)');
bfe4d0fc	77	ok($Foo->has_method('bling'), '... Foo->has_method(bling) (defined in main:: using symbol tables (no Sub::Name))');
60d90bbc	78	ok($Foo->has_method('bang'), '... Foo->has_method(bang) (defined in main:: using symbol tables and Sub::Name)');
bfe4d0fc	79	ok($Foo->has_method('evaled_foo'), '... Foo->has_method(evaled_foo) (evaled in main::)');
0882828e	80
de19f115	81	# calling get_method blessed them all
	82	isa_ok($_, 'Class::MOP::Method') for (
	83	\&Foo::FOO_CONSTANT,
	84	\&Foo::bar,
	85	\&Foo::baz,
	86	\&Foo::floob,
	87	\&Foo::blah,
	88	\&Foo::bling,
	89	\&Foo::bang,
	90	\&Foo::evaled_foo,
	91	);
	92
663f8198	93	{
	94	package Foo::Aliasing;
	95	use metaclass;
	96	sub alias_me { '...' }
	97	}
	98
	99	$Foo->alias_method('alias_me' => Foo::Aliasing->meta->get_method('alias_me'));
	100
	101	ok(!$Foo->has_method('alias_me'), '... !Foo->has_method(alias_me) (aliased from Foo::Aliasing)');
	102	ok(defined &Foo::alias_me, '... Foo does have a symbol table slow for alias_me though');
	103
bfe4d0fc	104	ok(!$Foo->has_method('blessed'), '... !Foo->has_method(blessed) (imported into Foo)');
bfe4d0fc	105	ok(!$Foo->has_method('boom'), '... !Foo->has_method(boom) (defined in main:: using symbol tables and Sub::Name w/out package name)');
0882828e	106
bfe4d0fc	107	ok(!$Foo->has_method('not_a_real_method'), '... !Foo->has_method(not_a_real_method) (does not exist)');
	108	is($Foo->get_method('not_a_real_method'), undef, '... Foo->get_method(not_a_real_method) == undef');
	109
c9b8b7f9	110	is_deeply(
	111	[ sort $Foo->get_method_list ],
	112	[ qw(FOO_CONSTANT bang bar baz blah bling evaled_foo floob foo) ],
	113	'... got the right method list for Foo');
	114
a5eca695	115	is_deeply(
	116	[ sort { $a->{name} cmp $b->{name} } $Foo->compute_all_applicable_methods() ],
	117	[
	118	map {
	119	{
	120	name => $_,
	121	class => 'Foo',
	122	code => $Foo->get_method($_)
	123	}
	124	} qw(
	125	FOO_CONSTANT
	126	bang
	127	bar
	128	baz
	129	blah
	130	bling
	131	evaled_foo
	132	floob
	133	foo
	134	)
	135	],
	136	'... got the right list of applicable methods for Foo');
	137
c9b8b7f9	138	is($Foo->remove_method('foo'), $foo, '... removed the foo method');
	139	ok(!$Foo->has_method('foo'), '... !Foo->has_method(foo) we just removed it');
	140	dies_ok { Foo->foo } '... cannot call Foo->foo because it is not there';
	141
	142	is_deeply(
	143	[ sort $Foo->get_method_list ],
	144	[ qw(FOO_CONSTANT bang bar baz blah bling evaled_foo floob) ],
	145	'... got the right method list for Foo');
	146
	147	ok($Foo->remove_method('FOO_CONSTANT'), '... removed the FOO_CONSTANT method');
	148	ok(!$Foo->has_method('FOO_CONSTANT'), '... !Foo->has_method(FOO_CONSTANT) we just removed it');
	149	dies_ok { Foo->FOO_CONSTANT } '... cannot call Foo->FOO_CONSTANT because it is not there';
	150
	151	is_deeply(
	152	[ sort $Foo->get_method_list ],
	153	[ qw(bang bar baz blah bling evaled_foo floob) ],
	154	'... got the right method list for Foo');
	155
bfe4d0fc	156	# ... test our class creator
	157
	158	my $Bar = Class::MOP::Class->create(
	159	'Bar' => '0.10' => (
c9b8b7f9	160	superclasses => [ 'Foo' ],
bfe4d0fc	161	methods => {
	162	foo => sub { 'Bar::foo' },
	163	bar => sub { 'Bar::bar' },
	164	}
	165	));
	166	isa_ok($Bar, 'Class::MOP::Class');
	167
	168	ok($Bar->has_method('foo'), '... Bar->has_method(foo)');
	169	ok($Bar->has_method('bar'), '... Bar->has_method(bar)');
	170
	171	is(Bar->foo, 'Bar::foo', '... Bar->foo == Bar::foo');
	172	is(Bar->bar, 'Bar::bar', '... Bar->bar == Bar::bar');
	173
	174	lives_ok {
	175	$Bar->add_method('foo' => sub { 'Bar::foo v2' });
	176	} '... overwriting a method is fine';
	177
	178	ok($Bar->has_method('foo'), '... Bar-> (still) has_method(foo)');
	179	is(Bar->foo, 'Bar::foo v2', '... Bar->foo == "Bar::foo v2"');
c9b8b7f9	180
	181	is_deeply(
	182	[ sort $Bar->get_method_list ],
aa448b16	183	[ qw(bar foo meta) ],
a5eca695	184	'... got the right method list for Bar');
	185
	186	is_deeply(
	187	[ sort { $a->{name} cmp $b->{name} } $Bar->compute_all_applicable_methods() ],
	188	[
	189	{
	190	name => 'bang',
	191	class => 'Foo',
	192	code => $Foo->get_method('bang')
	193	},
	194	{
	195	name => 'bar',
	196	class => 'Bar',
	197	code => $Bar->get_method('bar')
	198	},
	199	(map {
	200	{
	201	name => $_,
	202	class => 'Foo',
	203	code => $Foo->get_method($_)
	204	}
	205	} qw(
	206	baz
	207	blah
	208	bling
	209	evaled_foo
	210	floob
	211	)),
	212	{
	213	name => 'foo',
	214	class => 'Bar',
	215	code => $Bar->get_method('foo')
	216	},
aa448b16	217	{
	218	name => 'meta',
	219	class => 'Bar',
	220	code => $Bar->get_method('meta')
	221	}
a5eca695	222	],
	223	'... got the right list of applicable methods for Bar');
	224
	225