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#!/usr/bin/perl
# $Id: ctor.t 2872 2006-05-28 20:02:16Z theory $
##############################################################################
# Set up the tests.
##############################################################################
use strict;
use Test::More tests => 55;
##############################################################################
# Create a simple class.
##############################################################################
package Class::Meta::TestPerson;
use strict;
# Make sure we can load Class::Meta.
BEGIN { main::use_ok( 'Class::Meta' ) }
BEGIN {
# Import Test::More functions into this package.
Test::More->import;
# Create a new Class::Meta object.
ok( my $c = Class::Meta->new(package => __PACKAGE__,
key => 'person'),
"Create CM object" );
isa_ok($c, 'Class::Meta');
# Create a constructor.
sub inst { bless {} }
ok( my $ctor = $c->add_constructor( name => 'inst',
desc => 'The inst constructor',
label => 'inst Constructor',
create => 0,
view => Class::Meta::PUBLIC ),
"Create 'inst' ctor");
isa_ok($ctor, 'Class::Meta::Constructor');
# Test its accessors.
is( $ctor->name, "inst", "Check inst name" );
is( $ctor->desc, "The inst constructor", "Check inst desc" );
is( $ctor->label, "inst Constructor", "Check inst label" );
ok( $ctor->view == Class::Meta::PUBLIC, "Check inst view" );
isa_ok( $ctor->call(__PACKAGE__), __PACKAGE__);
# Okay, now test to make sure that an attempt to create a constructor
# directly fails.
eval { my $ctor = Class::Meta::Constructor->new };
ok( my $err = $@, "Get constructor construction exception");
like( $err, qr/Package 'Class::Meta::TestPerson' cannot create/,
"Caught proper exception");
# Now try it without a name.
eval{ $c->add_constructor() };
ok( $err = $@, "Caught no name exception");
like( $err, qr/Parameter 'name' is required in call to new/,
"Caught proper no name exception");
# Try a duplicately-named constructor.
eval{ $c->add_constructor(name => 'inst') };
ok( $err = $@, "Caught dupe name exception");
like( $err, qr/Method 'inst' already exists in class/,
"Caught proper dupe name exception");
# Try a couple of bogus visibilities.
eval { $c->add_constructor( name => 'new_ctor',
view => 25) };
ok( $err = $@, "Caught bogus view exception");
like( $err, qr/Not a valid view parameter: '25'/,
"Caught proper bogus view exception");
eval { $c->add_constructor( name => 'new_ctor',
view => 10) };
ok( $err = $@, "Caught another bogus view exception");
like( $err, qr/Not a valid view parameter: '10'/,
"Caught another proper bogus view exception");
# Try a bogus caller.
eval { $c->add_method( name => 'new_inst',
caller => 'foo' ) };
ok( $err = $@, "Caught bogus caller exception");
like( $err, qr/Parameter caller must be a code reference/,
"Caught proper bogus caller exception");
# Now test all of the defaults.
sub new_ctor { 22 }
ok( $ctor = $c->add_constructor( name => 'new_ctor',
create => 0 ), "Create 'new_ctor'" );
isa_ok($ctor, 'Class::Meta::Constructor');
# Test its accessors.
is( $ctor->name, "new_ctor", "Check new_ctor name" );
ok( ! defined $ctor->desc, "Check new_ctor desc" );
ok( ! defined $ctor->label, "Check new_ctor label" );
ok( $ctor->view == Class::Meta::PUBLIC, "Check new_ctor view" );
is ($ctor->call(__PACKAGE__), '22',
'Call the new_ctor constructor indirectly' );
}
# Now try subclassing Class::Meta.
package Class::Meta::SubClass;
use base 'Class::Meta';
sub add_constructor {
Class::Meta::Constructor->new( shift->SUPER::class, @_);
}
package Class::Meta::AnotherTest;
use strict;
BEGIN {
# Import Test::More functions into this package.
Test::More->import;
# Create a new Class::Meta object.
ok( my $c = Class::Meta::SubClass->new
(another => __PACKAGE__), "Create subclassed CM object" );
isa_ok($c, 'Class::Meta');
isa_ok($c, 'Class::Meta::SubClass');
sub foo_ctor { bless {} }
ok( my $ctor = $c->add_constructor( name => 'foo_ctor',
create => 0 ),
'Create subclassed foo_ctor' );
isa_ok($ctor, 'Class::Meta::Constructor');
# Test its accessors.
is( $ctor->name, "foo_ctor", "Check new foo_ctor name" );
ok( ! defined $ctor->desc, "Check new foo_ctor desc" );
ok( ! defined $ctor->label, "Check new foo_ctor label" );
ok( $ctor->view == Class::Meta::PUBLIC, "Check new foo_ctor view" );
isa_ok($ctor->call(__PACKAGE__), __PACKAGE__);
}
##############################################################################
# Now try subclassing Class::Meta::Constructor.
package Class::Meta::Constructor::Sub;
use base 'Class::Meta::Constructor';
# Make sure we can override new and build.
sub new { shift->SUPER::new(@_) }
sub build { shift->SUPER::build(@_) }
sub foo { shift->{foo} }
package main;
ok( my $cm = Class::Meta->new(
constructor_class => 'Class::Meta::Constructor::Sub'
), "Create Class" );
ok( my $ctor = $cm->add_constructor(name => 'foo', foo => 'bar'),
"Add foo constructor" );
isa_ok($ctor, 'Class::Meta::Constructor::Sub');
isa_ok($ctor, 'Class::Meta::Constructor');
is( $ctor->name, 'foo', "Check an attibute");
is( $ctor->foo, 'bar', "Check added attibute");
##############################################################################
# Now try mixing the setting of attributes.
package Try::Mixed::Constructor;
use Class::Meta::Types::Perl;
BEGIN { Test::More->import }
ok $cm = Class::Meta->new, 'Create new Class::Meta object';
ok $cm->add_constructor(name => 'new'), 'Add a constructor';
# Now write our own constructor.
ok(
$ctor = $cm->add_constructor(
name => 'implicit',
code => sub { ok 'Implicit constructor called' },
), 'Implicitly write constructor'
);
ok $cm->add_attribute(
name => 'foo',
type => 'scalar',
), 'Add "foo" attribute';
ok $cm->add_attribute(
name => 'bar',
type => 'scalar',
create => Class::Meta::NONE,
), 'Add "bar" attribute';
sub bar {
my $self = shift;
return $self->{bar} unless @_;
$self->foo(shift);
$self->{bar} = 'set';
}
ok $cm->build, 'Build the new class';
ok my $try = Try::Mixed::Constructor->new(bar => 'hey'),
'Construct an instance of the new class';
is $try->bar, 'set', '"bar" should be "set"';
is $try->foo, 'hey', '"foo" should be "hey"';
# Call implicit constructor and its test.
Try::Mixed::Constructor->implicit;
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