```rust use dakv_cuckoo::CuckooFilter;
fn main() { let mut cf = CuckooFilter::default(); let _ = cf.add(b"test"); asserteq!(cf.size(), 1); assert!(cf.contains(b"test")); assert!(cf.delete(b"test")); asserteq!(cf.size(), 0); assert!(!cf.contains(b"test")); }
```