Type::Tiny::Manual::UsingWithTestMore(3)   User Contributed Perl Documentation


NAME
       Type::Tiny::Manual::UsingWithTestMore - Type::Tiny for test suites

MANUAL
   Test::TypeTiny
       This is a module for testing that types you've defined accept and
       reject the values you think they should.

        should_pass($value, $type);
        should_fail($othervalue, $type);

       Easy. (But yeah, I always forget whether the type goes first or
       second!)

       There's also a function to test that subtype/supertype relationships
       are working okay.

        ok_subtype($type, @subtypes);

       Of course you can just check a type like this:

        ok( $type->check($value) );

       But the advantage of "should_pass" is that if the "EXTENDED_TESTING"
       environment variable is set to true, "should_pass" will also perform a
       strict check on the value, which involves climbing up the type's
       inheritance tree (its parent, its parent's parent, etc) to make sure
       the value passes all their constraints.

       If a normal check and strict check differ, this is usually a problem in
       the inlining code somewhere.

       See Test::TypeTiny for more information.

   Type::Tiny as a Replacement for Test::Deep
       Here's one of the examples from the Test::Deep documentation:

        my $name_re = re('^(Mr|Mrs|Miss) \w+ \w+$');
        cmp_deeply(
          $person,
          {
            Name       => $name_re,
            Phone      => re('^0d{6}$'),
            ChildNames => array_each($name_re)
          },
          "person ok"
        );

       It's pretty easy to rewrite this to use Types::Standard:

        my $name = StrMatch[ qr/^(Mr|Mrs|Miss) \w+ \w+$/ ];
        should_pass(
          $person,
          Dict[
            Name         => $name,
            Phone        => StrMatch[ qr/^0d{6}$/ ],
            ChildNames   => ArrayRef[$name]
          ]
        );

       There's nothing especially wrong with Test::Deep, but if you're already
       familiar with Type::Tiny's built-in types and you've maybe written your
       own type libraries too, it will save you having to switch between using
       two separate systems of checks.

NEXT STEPS
       Here's your next step:

       o   Type::Tiny::Manual::Params

           Advanced information on Type::Params, and using Type::Tiny with
           other signature modules like Function::Parameters and Kavorka.

AUTHOR
       Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE
       This software is copyright (c) 2013-2014, 2017-2023 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.

DISCLAIMER OF WARRANTIES
       THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
       WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
       MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

perl v5.38.2                      2024-03-13
                                      Type::Tiny::Manual::UsingWithTestMore(3)