=pod
=encoding utf-8
=head1 PURPOSE
Test the C<ro> trait.
=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 Test::More;
use Test::Fatal;
{
package Example;
use Kavorka;
fun foo ($x but ro) {
++$x;
}
fun bar ($x is rw) {
++$x;
}
}
like(
exception { Example::foo(42) },
qr{^Modification of a read-only value attempted },
);
is(
Example::bar(42),
43,
);
done_testing;