code: def test_get_offsets_buffer_nonstring_dtype() -> None:
      s = pl.Series([1, 2, 3], dtype=pl.Int32)
      col = PolarsColumn(s)
      assert col._get_validity_buffer() is None
  
imports: from __future__ import annotations
  from datetime import datetime
  from typing import TYPE_CHECKING
  import pytest
  import polars
  from polars.interchange.column import PolarsColumn
  from polars.interchange.protocol import ColumnNullType, CopyNotAllowedError, DtypeKind
  from polars.testing import assert_series_equal
label_desc: Use image node_id 26 for calling a global function with example usage: test_get_offsets_buffer_nonstring_dtype() without return types