#!/usr/bin/perl use strict; use warnings; use Test::More; use Data::Dumper; my $hash = { '50' => [ 1 ] }; print Dumper $hash; is(keys %{$hash}, 1, q/keys %{$hash} is 1/); is(scalar @{$hash->{'50'}}, 1, q/$hash->{'50'} is 1/); is(scalar @{$hash->{'100'}}, 0, q/$hash->{'100'} is 0/); print Dumper $hash; done_testing();