code: def test_convert_excel_date():
      # using openpyxl as the engine staves off an error that crops up
      # during the CI build up with xlrd
      df = (
          pd.read_excel(
              Path(pytest.EXAMPLES_DIR)
              / "notebooks"
              / "dirty_data.xlsx",
              engine="openpyxl",
          )
          .clean_names()
          .convert_excel_date("hire_date")
      )
  
      assert df["hire_date"].dtype == "M8[ns]"
  
imports: from pathlib import Path
  import pandas
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: test_convert_excel_date() without return types