code: def test_compare_enum_str_single(
      op: Callable[[pl.Series, pl.Series], pl.Series],
      expected: pl.Series,
  ) -> None:
      s = pl.Series(
          [None, "HIGH", "MEDIUM", "LOW"],
          dtype=pl.Enum(["LOW", "MEDIUM", "HIGH"]),
      )
      s2 = "MEDIUM"
  
      assert_series_equal(op(s, s2), expected)
  
imports: import operator
  from datetime import date
  from textwrap import dedent
  from typing import Any, Callable
  import pytest
  import polars
  from polars import StringCache
  from polars.testing import assert_series_equal
label_desc: Use image node_id 20 for calling a global function with example usage: test_compare_enum_str_single(op, expected) without return types