Function not_a_map

nodedb-query/src/msgpack_scan/index.rs:188–191

()

    #[test]
    fn not_a_map() {
        let buf = encode(&json!([1, 2, 3]));
        assert!(FieldIndex::build(&buf, 0).is_none());
    }

    #[test]
    fn indexed_vs_sequential_same_result() {