fn offset_fixed_size_binary() -> Result<()> {
        let values = *b"hellotherearrow";
        let offsets: [i32; 4] = [0, 5, 10, 15];
        // set the first and third element to be valid
        let bits_v = [0b101_u8];

        let data = ArrayData::builder(DataType::Binary)
            .len(2)
            .add_buffer(Buffer::from_slice_ref(&offsets))
            .add_buffer(Buffer::from_slice_ref(&values))
            .offset(1)
            .null_bit_buffer(Buffer::from(bits_v))
            .build()
            .unwrap();
        // array is `[null, "arrow"]`
        let array = BinaryArray::from(data);
        // result is `[null, "rrow"]`
        let result = substring(&array, 1, None)?;
        let result = result
            .as_any()
            .downcast_ref::<BinaryArray>()
            .unwrap();
        let expected = BinaryArray::from_opt_vec(
            vec![None, Some(b"rrow")],
        );
        assert_eq!(result, &expected);

        Ok(())
    }