code: def test_min_horizontal_single_input(
      input: Any, expected_data: list[Any]
  ) -> None:
      df = pl.DataFrame({"a": [1, 4], "b": [3, 2]})
      result = df.select(min=pl.min_horizontal(input)).to_series()
      expected = pl.Series("min", expected_data)
      assert_series_equal(result, expected)
  
imports: from __future__ import annotations
  import datetime
  from typing import Any
  import pytest
  import polars
  from polars.testing import assert_frame_equal, assert_series_equal
label_desc: Use image node_id 9 for calling a global function with example usage: test_min_horizontal_single_input(input, expected_data) without return types