Function test_struct_array_from_vec

arrow-array/src/array/struct_array.rs:761–794

()

    /// validates that the in-memory representation follows [the spec](https://arrow.apache.org/docs/format/Columnar.html#struct-layout)
    #[test]
    fn test_struct_array_from_vec() {
        let strings: ArrayRef = Arc::new(StringArray::from(vec![
            Some("joe"),
            None,
            None,
            Some("mark"),
        ]));
        let ints: ArrayRef = Arc::new(Int32Array::from(vec![Some(1), Some(2), None, Some(4)]));

        let arr =
            StructArray::try_from(vec![("f1", strings.clone()), ("f2", ints.clone())]).unwrap();

        let struct_data = arr.into_data();
        assert_eq!(4, struct_data.len());
        assert_eq!(0, struct_data.null_count());

        let expected_string_data = ArrayData::builder(DataType::Utf8)
            .len(4)
            .null_bit_buffer(Some(Buffer::from(&[9_u8])))
            .add_buffer(Buffer::from([0, 3, 3, 3, 7].to_byte_slice()))
            .add_buffer(Buffer::from(b"joemark"))
            .build()
            .unwrap();

        let expected_int_data = ArrayData::builder(DataType::Int32)
            .len(4)
            .null_bit_buffer(Some(Buffer::from(&[11_u8])))
            .add_buffer(Buffer::from([1, 2, 0, 4].to_byte_slice()))
            .build()
            .unwrap();

        assert_eq!(expected_string_data, struct_data.child_data()[0]);
        assert_eq!(expected_int_data, struct_data.child_data()[1]);
    }

    #[test]
    fn test_struct_array_from_vec_error() {