Function test_alignment_struct

arrow-data/src/data.rs:2660–2695

()

    #[test]
    fn test_alignment_struct() {
        let buffer = Buffer::from_vec(vec![1_i32, 2_i32, 3_i32]);
        let sliced = buffer.slice(1);

        let child_data = ArrayData {
            data_type: DataType::Int32,
            len: 0,
            offset: 0,
            buffers: vec![buffer],
            child_data: vec![],
            nulls: None,
        };

        let schema = DataType::Struct(Fields::from(vec![Field::new("a", DataType::Int32, false)]));
        let mut data = ArrayData {
            data_type: schema,
            len: 0,
            offset: 0,
            buffers: vec![],
            child_data: vec![child_data],
            nulls: None,
        };
        data.validate_full().unwrap();

        // break alignment in child data
        data.child_data[0].buffers[0] = sliced;
        let err = data.validate().unwrap_err();

        assert_eq!(
            err.to_string(),
            "Invalid argument error: Misaligned buffers[0] in array of type Int32, offset from expected alignment of 4 by 1"
        );

        data.align_buffers();
        data.validate_full().unwrap();
    }

    #[test]
    fn test_null_view_types() {