1Type::Tiny::Manual::UsiUnsgeWritChoTnetsrtiMbourtee(d3T)Pyeprel::DToicnuym:e:nMtaantuiaoln::UsingWithTestMore(3)
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6 Type::Tiny::Manual::UsingWithTestMore - Type::Tiny for test suites
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9 Test::TypeTiny
10 This is a module for testing that types you've defined accept and
11 reject the values you think they should.
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13 should_pass($value, $type);
14 should_fail($othervalue, $type);
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16 Easy. (But yeah, I always forget whether the type goes first or
17 second!)
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19 There's also a function to test that subtype/supertype relationships
20 are working okay.
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22 ok_subtype($type, @subtypes);
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24 Of course you can just check a type like this:
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26 ok( $type->check($value) );
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28 But the advantage of "should_pass" is that if the "EXTENDED_TESTING"
29 environment variable is set to true, "should_pass" will also perform a
30 strict check on the value, which involves climbing up the type's
31 inheritance tree (its parent, its parent's parent, etc) to make sure
32 the value passes all their constraints.
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34 If a normal check and strict check differ, this is usually a problem in
35 the inlining code somewhere.
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37 See Test::TypeTiny for more information.
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39 Type::Tiny as a Replacement for Test::Deep
40 Here's one of the examples from the Test::Deep documentation:
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42 my $name_re = re('^(Mr|Mrs|Miss) \w+ \w+$');
43 cmp_deeply(
44 $person,
45 {
46 Name => $name_re,
47 Phone => re('^0d{6}$'),
48 ChildNames => array_each($name_re)
49 },
50 "person ok"
51 );
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53 It's pretty easy to rewrite this to use Types::Standard:
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55 my $name = StrMatch[ qr/^(Mr|Mrs|Miss) \w+ \w+$/ ];
56 should_pass(
57 $person,
58 Dict[
59 Name => $name,
60 Phone => StrMatch[ qr/^0d{6}$/ ],
61 ChildNames => ArrayRef[$name]
62 ]
63 );
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65 There's nothing especially wrong with Test::Deep, but if you're already
66 familiar with Type::Tiny's built-in types and you've maybe written your
67 own type libraries too, it will save you having to switch between using
68 two separate systems of checks.
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71 Here's your next step:
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73 • Type::Tiny::Manual::Params
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75 Advanced information on Type::Params, and using Type::Tiny with
76 other signature modules like Function::Parameters and Kavorka.
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79 Toby Inkster <tobyink@cpan.org>.
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82 This software is copyright (c) 2013-2014, 2017-2021 by Toby Inkster.
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84 This is free software; you can redistribute it and/or modify it under
85 the same terms as the Perl 5 programming language system itself.
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88 THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
89 WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
90 MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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94perl v5.34.0 2021-T0y9p-e1:3:Tiny::Manual::UsingWithTestMore(3)