code: def test_add_column_add_integer(df):
      """col_name wasn't a string"""
      with pytest.raises(TypeError):
          df.add_column(column_name=42, value=42)
  
file_path: pyjanitor/tests/functions/test_add_column.py
imports: import numpy
  import pandas
  import pytest
  from hypothesis import given, settings
  from hypothesis import strategies
  from pandas.testing import assert_series_equal
  from janitor.testing_utils.strategies import df_strategy
label_desc: Use image node_id 1 for calling a global function with example usage: test_add_column_add_integer(df) without return types