4 use Test::More tests=>15;
5 use Moose::Util::TypeConstraints;
6 use Moose::Meta::TypeConstraint::Parameterizable;
8 use Data::Dump qw/dump/;
10 ## Sketch for how this could work
12 ok my $Optional = Moose::Meta::TypeConstraint::Parameterizable->new(
14 package_defined_in => __PACKAGE__,
15 parent => find_type_constraint('Item'),
16 constraint => sub { 1 },
17 constraint_generator => sub {
18 my ($type_parameter, @args) = @_;
19 my $check = $type_parameter->_compiled_type_constraint();
22 if(exists($args[0])) {
23 ## If it exists, we need to validate it
26 ## But it's is okay if the value doesn't exists
33 Moose::Util::TypeConstraints::register_type_constraint($Optional);
34 Moose::Util::TypeConstraints::add_parameterizable_type($Optional);
37 isa_ok $Optional, 'Moose::Meta::TypeConstraint::Parameterizable';
39 ok my $int = Moose::Util::TypeConstraints::find_or_parse_type_constraint('Int')
42 ok my $arrayref = Moose::Util::TypeConstraints::find_or_parse_type_constraint('ArrayRef[Int]')
43 => 'Got ArrayRef[Int]';
45 ok my $Optional_Int = $Optional->parameterize($int), 'Parameterized Int';
46 ok my $Optional_ArrayRef = $Optional->parameterize($arrayref), 'Parameterized ArrayRef';
48 ok $Optional_Int->check() => 'Optional is allowed to not exist';
50 ok !$Optional_Int->check(undef) => 'Optional is NOT allowed to be undef';
51 ok $Optional_Int->check(199) => 'Correctly validates 199';
52 ok !$Optional_Int->check("a") => 'Correctly fails "a"';
54 ok $Optional_ArrayRef->check() => 'Optional is allowed to not exist';
55 ok !$Optional_ArrayRef->check(undef) => 'Optional is NOT allowed to be undef';
56 ok $Optional_ArrayRef->check([1,2,3]) => 'Correctly validates [1,2,3]';
57 ok !$Optional_ArrayRef->check("a") => 'Correctly fails "a"';
58 ok !$Optional_ArrayRef->check(["a","b"]) => 'Correctly fails ["a","b"]';