code: def test_check_exog_dtypes_pandas_DataFrame():
      """
      Test check_exog_dtypes accepts all dtypes in a pandas DataFrame.
      """
      df = pd.DataFrame({"col1": [1.0, 2.0, 3.0], "col2": [4, 5, 6]})
      df["col2"] = df["col2"].astype("category")
      _ = check_exog_dtypes(df)
  
      assert _ is None
  
file_path: skforecast/skforecast/utils/tests/test_check_exog_dtypes.py
imports: import re
  import pytest
  import numpy
  import pandas
  from skforecast.utils import check_exog_dtypes
  from skforecast.exceptions import DataTypeWarning
label_desc: Use image node_id 6 for calling a global function with example usage: test_check_exog_dtypes_pandas_DataFrame() without return types