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=pod
=encoding utf-8
=head1 PURPOSE
Checks union type constraint subtype/supertype relationships.
=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, 2017-2025 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 );
use Types::Standard Object => { -as => "Blessed" };
{ my $x; sub FooBarOrDoesQuux () { $x ||= union(FooBarOrDoesQuux => [FooBar, DoesQuux]) } }
ok(
        FooBarOrDoesQuux->is_a_type_of(FooBarOrDoesQuux),
);
ok(
        FooBarOrDoesQuux->is_supertype_of(FooBar),
);
ok(
        FooBarOrDoesQuux->is_supertype_of(DoesQuux),
);
ok(
        FooBarOrDoesQuux->is_a_type_of(Blessed),
);
ok(
        ! FooBarOrDoesQuux->is_supertype_of(Blessed),
);
ok(
        ! FooBarOrDoesQuux->is_subtype_of(FooBarOrDoesQuux),
);
ok(
        FooBarOrDoesQuux->is_subtype_of(Blessed),
);
done_testing;