use strict;
use warnings;
use Test::More;
use Test::Fatal;
{
package Duck;
use Moose;
sub quack { }
}
{
package Swan;
use Moose;
sub honk { }
}
{
package RubberDuck;
use Moose;
sub quack { }
}
{
package DucktypeTest;
use Moose;
use Moose::Util::TypeConstraints;
duck_type 'DuckType' => [qw(quack)];
duck_type 'SwanType' => [qw(honk)];
has duck => (
isa => 'DuckType',
is => 'ro',
lazy_build => 1,
);
sub _build_duck { Duck->new }
has swan => (
isa => duck_type( [qw(honk)] ),
is => 'ro',
);
has other_swan => (
isa => 'SwanType',
is => 'ro',
);
}
# try giving it a duck
is( exception { DucktypeTest->new( duck => Duck->new ) }, undef, 'the Duck lives okay' );
# try giving it a swan which is like a duck, but not close enough
like( exception { DucktypeTest->new( duck => Swan->new ) }, qr/Swan is missing methods 'quack'/, "the Swan doesn't quack" );
# try giving it a rubber RubberDuckey
is( exception { DucktypeTest->new( swan => Swan->new ) }, undef, 'but a Swan can honk' );
# try giving it a rubber RubberDuckey
is( exception { DucktypeTest->new( duck => RubberDuck->new ) }, undef, 'the RubberDuck lives okay' );
# try with the other constraint form
is( exception { DucktypeTest->new( other_swan => Swan->new ) }, undef, 'but a Swan can honk' );
my $re = qr/Validation failed for 'DuckType' with value/;
like( exception { DucktypeTest->new( duck => undef ) }, $re, 'Exception for undef' );
like( exception { DucktypeTest->new( duck => [] ) }, $re, 'Exception for arrayref' );
like( exception { DucktypeTest->new( duck => {} ) }, $re, 'Exception for hashref' );
like( exception { DucktypeTest->new( duck => \'foo' ) }, $re, 'Exception for scalar ref' );
done_testing;