use Test::More tests => 19;
use strict;
use Devel::Size qw(size total_size);
-use Scalar::Util qw(weaken);
can_ok ('Devel::Size', qw/
size
/);
die ("Uhoh, test uses an outdated version of Devel::Size")
- unless is ($Devel::Size::VERSION, '0.75_52', 'VERSION MATCHES');
+ unless is ($Devel::Size::VERSION, '0.76_50', 'VERSION MATCHES');
#############################################################################
# some basic checks:
{
my $a = [];
my $b = \$a;
- # making a weakref upgrades the target to PVMG and adds magic
- weaken $b;
+ # Scalar::Util isn't in the core before 5.7.something.
+ # The test isn't really testing anything without the weaken(), but it
+ # isn't counter-productive or harmful to run it anyway.
+ unless (eval {
+ require Scalar::Util;
+ # making a weakref upgrades the target to PVMG and adds magic
+ Scalar::Util::weaken($b);
+ 1;
+ }) {
+ die $@ if $] >= 5.008;
+ }
+
is(total_size($a), total_size([]),
'Any intial reference is dereferenced and discarded');
}