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|
=pod
=encoding utf-8
=head1 PURPOSE
Checks union type constraints work.
=head1 DEPENDENCIES
Uses the bundled BiggerLib.pm type library.
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2013-2014 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
use strict;
use warnings;
use lib qw( ./lib ./t/lib ../inc ./inc );
use Test::More;
use Test::TypeTiny;
use BiggerLib qw( :types );
use Type::Utils qw( union class_type );
{ my $x; sub FooBarOrDoesQuux () { $x ||= union(FooBarOrDoesQuux => [FooBar, DoesQuux]) } }
isa_ok(
FooBarOrDoesQuux,
'Type::Tiny::Union',
'FooBarOrDoesQuux',
);
isa_ok(
FooBarOrDoesQuux->[0],
'Type::Tiny::Class',
'FooBarOrDoesQuux->[0]',
);
isa_ok(
FooBarOrDoesQuux->[1],
'Type::Tiny::Role',
'FooBarOrDoesQuux->[1]',
);
is(
FooBarOrDoesQuux."",
'FooBar|DoesQuux',
'stringification good',
);
my $something = bless [] => do {
package Something;
sub DOES {
return 1 if $_[1] eq 'Quux';
$_[0]->isa($_[0]);
}
__PACKAGE__;
};
should_pass("Foo::Bar"->new, FooBarOrDoesQuux);
should_pass("Foo::Baz"->new, FooBarOrDoesQuux);
should_pass($something, FooBarOrDoesQuux);
my $something_else = bless [] => do {
package Something::Else;
sub DOES {
return 1 if $_[1] eq 'Else';
$_[0]->isa($_[0]);
}
__PACKAGE__;
};
should_fail($something_else, FooBarOrDoesQuux);
should_fail("Foo::Bar", FooBarOrDoesQuux);
should_fail("Foo::Baz", FooBarOrDoesQuux);
{ my $x; sub NotherUnion () { $x ||= union(NotherUnion => [BigInteger, FooBarOrDoesQuux, SmallInteger]) } }
is(
scalar @{+NotherUnion},
4,
"unions don't get unnecessarily deep",
);
{ package Local::A }
{ package Local::B }
{ package Local::C }
{ package Local::A::A; our @ISA = qw(Local::A) }
{ package Local::A::B; our @ISA = qw(Local::A) }
{ package Local::A::AB; our @ISA = qw(Local::A::A Local::A::B) }
{ package Local::A::X; our @ISA = qw(Local::A) }
my $c1 = union [
class_type({ class => "Local::A::AB" }),
class_type({ class => "Local::A::X" }),
];
ok(
$c1->parent == class_type({ class => "Local::A" }),
"can climb up parents of union type constraints to find best common ancestor",
);
my $c2 = union [
class_type({ class => "Local::A" }),
class_type({ class => "Local::B" }),
class_type({ class => "Local::C" }),
];
ok(
$c2->parent == Types::Standard::Object(),
"can climb up parents of union type constraints to find best common ancestor (again)",
);
is(
$c2->find_type_for( bless({}, 'Local::B') )->class,
'Local::B',
'Union find_type_for',
);
is(
$c2->find_type_for( bless({}, 'Local::A::A') )->class,
'Local::A',
'Union find_type_for (less obvious)',
);
is(
$c2->find_type_for( bless({}, 'Local::A::AB') )->class,
'Local::A',
'Union find_type_for (ambiguous)',
);
is(
$c2->find_type_for( bless({}, 'Local::D') ),
undef,
'Union find_type_for (none)',
);
done_testing;
|
