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#!/usr/bin/perl -w
# Testing for _CALLABLE
use strict;
use lib ();
use File::Spec::Functions ':ALL';
BEGIN {
$| = 1;
unless ( $ENV{HARNESS_ACTIVE} ) {
require FindBin;
$FindBin::Bin = $FindBin::Bin; # Avoid a warning
chdir catdir( $FindBin::Bin, updir() );
lib->import(
catdir('blib', 'arch'),
catdir('blib', 'lib' ),
catdir('lib'),
);
}
}
use Test::More;
use Scalar::Util qw(blessed reftype);
use overload;
sub c_ok { ok( _CALLABLE($_[0]), "callable: $_[1]" ) }
sub nc_ok { ok( ! _CALLABLE($_[0]), "not callable: $_[1]" ) }
my @callables = (
"callable itself" => \&_CALLABLE,
"a boring plain code ref" => sub {},
'an object with overloaded &{}' => C::O->new,
'a object build from a coderef' => C::C->new,
'an object with inherited overloaded &{}' => C::O::S->new,
'a coderef blessed into CODE' => (bless sub {} => 'CODE'),
);
my @uncallables = (
"undef" => undef,
"a string" => "a string",
"a number" => 19780720,
"a ref to a ref to code" => \(sub {}),
"a boring plain hash ref" => {},
'a class that builds from coderefs' => "C::C",
'a class with overloaded &{}' => "C::O",
'a class with inherited overloaded &{}' => "C::O::S",
'a plain boring hash-based object' => UC->new,
'a non-coderef blessed into CODE' => (bless {} => 'CODE'),
);
plan tests => (@callables + @uncallables) / 2 + 2;
# Import the function
use_ok( 'Params::Util', '_CALLABLE' );
ok( defined *_CALLABLE{CODE}, '_CALLABLE imported ok' );
while ( @callables ) {
my ($name, $object) = splice @callables, 0, 2;
c_ok($object, $name);
}
while ( @uncallables ) {
my ($name, $object) = splice @uncallables, 0, 2;
nc_ok($object, $name);
}
# callable: is a blessed code ref
package C::C;
sub new { bless sub {} => shift; }
# callable: overloads &{}
# but! only objects are callable, not class
package C::O;
sub new { bless {} => shift; }
use overload '&{}' => sub { sub {} };
use overload 'bool' => sub () { 1 };
# callable: subclasses C::O
package C::O::S;
use base 'C::O';
# uncallable: some boring object with no codey magic
package UC;
sub new { bless {} => shift; }
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