code: def test_check_filename():
      """Raise error if file does not exist."""
      with pytest.raises(
          FileNotFoundError,
          match=r"\[Errno 2\] No such file or directory.+",
      ):
          io.xlsx_cells("excel.xlsx", "clean")
  
imports: from pathlib import Path
  import pytest
  from openpyxl import load_workbook
  from pandas.testing import assert_series_equal
  from janitor import io
label_desc: Use image node_id 4 for calling a global function with example usage: test_check_filename() without return types