Function test_string_data_from_foreign

arrow/tests/array_validation.rs:1016–1059

()

#[test]
fn test_string_data_from_foreign() {
    let mut strings = "foobarfoobar".to_owned();
    let mut offsets = vec![0_i32, 0, 3, 6, 12];
    let mut bitmap = vec![0b1110_u8];

    let strings_buffer = unsafe {
        Buffer::from_custom_allocation(
            NonNull::new_unchecked(strings.as_mut_ptr()),
            strings.len(),
            Arc::new(strings),
        )
    };
    let offsets_buffer = unsafe {
        Buffer::from_custom_allocation(
            NonNull::new_unchecked(offsets.as_mut_ptr() as *mut u8),
            offsets.len() * std::mem::size_of::<i32>(),
            Arc::new(offsets),
        )
    };
    let null_buffer = unsafe {
        Buffer::from_custom_allocation(
            NonNull::new_unchecked(bitmap.as_mut_ptr()),
            bitmap.len(),
            Arc::new(bitmap),
        )
    };

    let data = ArrayData::try_new(
        DataType::Utf8,
        4,
        Some(null_buffer),
        0,
        vec![offsets_buffer, strings_buffer],
        vec![],
    )
    .unwrap();

    let array = make_array(data);
    let array = array.as_any().downcast_ref::<StringArray>().unwrap();

    let expected = StringArray::from(vec![None, Some("foo"), Some("bar"), Some("foobar")]);

    assert_eq!(array, &expected);
}

#[test]
fn test_decimal_full_validation() {