-ok(! $marc->fetch(0), "fetch 0");
-ok($marc->fetch($marc->count), "fetch max:".$marc->count);
-ok(! $marc->fetch($marc->count + 1), "fetch max+1:".($marc->count+1));
+ cmp_ok($marc->count, '==', scalar @{$marc->{leaders}}, "count == leaders");
+ cmp_ok($marc->count, '==', scalar @{$marc->{fh_offset}}, "count == fh_offset");