code: def test_normalize(form, expected, any_string_dtype):
      ser = Series(
          ["ABC", "ＡＢＣ", "１２３", np.nan, "ｱｲｴ"],  # noqa: RUF001
          index=["a", "b", "c", "d", "e"],
          dtype=any_string_dtype,
      )
      expected = Series(
          expected,
          index=["a", "b", "c", "d", "e"],
          dtype=any_string_dtype,
      )
      result = ser.str.normalize(form)
      tm.assert_series_equal(result, expected)
  
imports: from datetime import datetime, timedelta
  import numpy
  import pytest
  from pandas import DataFrame, Index, MultiIndex, Series
  import pandas._testing
  from pandas.core.strings.accessor import StringMethods
  from pandas.tests.strings import object_pyarrow_numpy
label_desc: Use image node_id 35 for calling a global function with example usage: test_normalize(form, expected, any_string_dtype) without return types