Function extract_string_column

nodedb-strict/src/arrow_extract.rs:469–494

()

    #[test]
    fn extract_string_column() {
        let schema = test_schema();
        let decoder = TupleDecoder::new(&schema);
        let rows = vec![
            vec![
                Value::Integer(1),
                Value::String("hello".into()),
                Value::Float(1.0),
                Value::Bool(true),
            ],
            vec![
                Value::Integer(2),
                Value::String("world".into()),
                Value::Null,
                Value::Null,
            ],
        ];
        let encoded = encode_rows(&schema, &rows);
        let refs: Vec<&[u8]> = encoded.iter().map(|v| v.as_slice()).collect();

        let arr = extract_column_to_arrow(&schema, &decoder, &refs, 1).unwrap();
        let str_arr = arr.as_any().downcast_ref::<StringArray>().unwrap();
        assert_eq!(str_arr.len(), 2);
        assert_eq!(str_arr.value(0), "hello");
        assert_eq!(str_arr.value(1), "world");
    }

    #[test]
    fn extract_bool_column_with_nulls() {