--- /dev/null
+use strictures 1;
+use Test::More;
+
+use System::Introspector::FileHandles;
+
+my $probe = System::Introspector::FileHandles->new;
+my $data = $probe->gather;
+
+ok(@$data, 'received filehandle data');
+ok(not(grep { not keys %$_ } @$data), 'keys in all entries');
+
+done_testing;