code: def test_crossing_dst_tz_aware(format: str) -> None:
      ts = ["2021-03-27T23:59:59+01:00", "2021-03-28T23:59:59+02:00"]
      result = pl.Series(ts).str.to_datetime(format)
      expected = pl.Series(
          [
              datetime(2021, 3, 27, 22, 59, 59, tzinfo=timezone.utc),
              datetime(2021, 3, 28, 21, 59, 59, tzinfo=timezone.utc),
          ]
      )
      assert_series_equal(result, expected)
  
imports: from __future__ import annotations
  import contextlib
  from datetime import date, datetime, time, timedelta, timezone
  from typing import TYPE_CHECKING
  import pytest
  import polars
  from polars.exceptions import ComputeError, TimeZoneAwareConstructorWarning
  from polars.testing import assert_series_equal
label_desc: Use image node_id 27 for calling a global function with example usage: test_crossing_dst_tz_aware(format) without return types