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: / usr / share / doc / perl-Sub-Identify / t /

Filename : 05constant.t

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#!/usr/bin/perl
use Test::More tests => 5;
use Sub::Identify 'is_sub_constant';

sub un;
sub deux ();
sub trois { 3 }
sub quatre () { 4 }
$cinq = \&quatre;

ok(!is_sub_constant(\&un));
ok(!is_sub_constant(\&deux));
ok(!is_sub_constant(\&trois));
ok(is_sub_constant(\&quatre));
ok(is_sub_constant($cinq));