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|
=pod
=encoding utf-8
=head1 NAME
Type::Tiny::Manual::UsingWithTestMore - Type::Tiny for test suites
=head1 MANUAL
=head2 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 C<should_pass> is that if the C<EXTENDED_TESTING>
environment variable is set to true, C<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 L<Test::TypeTiny> for more information.
=head2 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 L<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.
=head1 NEXT STEPS
Here's your next step:
=over
=item * L<Type::Tiny::Manual::Params>
Advanced information on Type::Params, and using Type::Tiny with other
signature modules like Function::Parameters and Kavorka.
=back
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 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.
=head1 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.
=cut
|
