Function fuzz_out_of_bounds_offset

nodedb-query/src/msgpack_scan/index.rs:288–291

()

    /// Out-of-bounds offset must return None.
    #[test]
    fn fuzz_out_of_bounds_offset() {
        let buf = encode(&json!({"x": 1}));
        assert!(FieldIndex::build(&buf, buf.len() + 100).is_none());
    }

    /// Threshold boundary: a 16-field doc should use Flat, 17-field should
    /// use HashMap. Fuzz both paths with truncation.