Test::Deep::Type(3p)

NAME
Test::Deep::Type - A Test::Deep plugin for validating type constraints

VERSION
version 0.008

SYNOPSIS
    use Test::More;
    use Test::Deep;
    use Test::Deep::Type;
    use MooseX::Types::Moose 'Str';

    cmp_deeply(
        {
            message => 'ack I am slain',
            counter => 123,
        },
        {
            message => is_type(Str),
            counter => is_type(sub { die "not an integer" unless int($_[0]) eq $_[0] }),
        },
        'message is a plain string, counter is a number',
    );

DESCRIPTION
This is a Test::Deep plugin that provides the sub "is_type" to indicate that the data being tested must validate against the passed type. This is an actual type object, not a string name -- for example something provided via MooseX::Types, or a plain old coderef that returns a bool (such as what might be used in a Moo type constraint).

FUNCTIONS

  "is_type"
Exported by default; to be used within a Test::Deep comparison function such as cmp_deeply. As this module aims to be a solution for many popular type systems, we attempt to use the type in multiple ways:

MooseX::Types/Moose::Meta::TypeConstraint-style types:
    If the "validate" method exists, it is invoked on the type object with the data as its parameter (which should return "undef" on success, and the error message on failure).

coderef/Moo-style types:
    If the type appears to be or act like a coderef (either a coderef, blessed or unblessed, or possesses a coderef overload) the type is invoked as a sub, with the data as its parameter. Its return value is treated as a boolean; if it also dies with a message describing the failure, this message is used in the failure diagnostics.

    Type::Tiny types fall into this category, and are fully supported.

CAVEATS
Regular strings describing a type under a particular system (e.g. Moose, Params::Validate) are not currently supported.

SEE ALSO

•   Test::Deep

•   Test::TypeConstraints

•   Test::Type

•   Test::Deep::Matcher

•   MooseX::Types

•   Moose::Meta::TypeConstraint

•   Moo

•   Type::Tiny

SUPPORT
Bugs may be submitted through the RT bug tracker <https://rt.cpan.org/Public/Dist/Display.html?Name=Test-Deep-Type> (or bug-Test-Deep-Type@rt.cpan.org <mailto:bug-Test-Deep-Type@rt.cpan.org>).

There is also a mailing list available for users of this distribution, at <http://lists.perl.org/list/perl-qa.html>.

There is also an irc channel available for users of this distribution, at "#perl" on "irc.perl.org" <irc://irc.perl.org/#perl-qa>.

I am also usually active on irc, as 'ether' at "irc.perl.org".

AUTHOR
Karen Etheridge <ether@cpan.org>

CONTRIBUTOR
Graham Knop <haarg@haarg.org>

COPYRIGHT AND LICENCE
This software is copyright (c) 2013 by Karen Etheridge.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.