code: def test_get_chunks(n_chunks: int | None) -> None:
      s1 = pl.Series([1, 2, 3])
      s2 = pl.Series([4, 5])
      s = pl.concat([s1, s2], rechunk=False)
      col = PolarsColumn(s)
  
      out = col.get_chunks(n_chunks)
  
      expected = [s1, s2]
      for o, e in zip(out, expected):
          assert_series_equal(o._col, e)
  
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 15 for calling a global function with example usage: test_get_chunks(n_chunks) without return types