PURPOSE
Test that objects overloading stringification can be stored in sets.
DEPENDENCIES
This test requires Type::Tiny 0.014 and is skipped otherwise. We don't really need type constraints, but Type::Tiny overloads stringification, so is handy here.
AUTHOR
Toby Inkster <tobyink@cpan.org>.
COPYRIGHT AND LICENCE
This software is copyright (c) 2013 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.