-is($skv->replace_values($cafe, $dead), 2, 'replaced 2 by value');
-is($skv->delete_by_val('bogus'), 0, 'delete_by_val misses');
-is($skv->delete_by_val($dead), 2, 'delete_by_val hits');
-is($skv->delete_by_val($dead), 0, 'delete_by_val misses again');
-