code: def test_fill_value(fill_df):
      """Raise ValueError if `fill_value` is not the right data type."""
      with pytest.raises(
          TypeError,
          match="fill_value should either be a dictionary or a scalar value.",
      ):
          fill_df.complete(
              "group", "item_id", fill_value=pd.Series([2, 3, 4])
          )
  
imports: from string import ascii_lowercase
  import numpy
  import pandas
  import pytest
  from hypothesis import given, settings
  from pandas.testing import assert_frame_equal
  from janitor.testing_utils.strategies import categoricaldf_strategy
label_desc: Use image node_id 16 for calling a global function with example usage: test_fill_value(fill_df) without return types