code: def test_metadata_filters_from_config(tmpdir):
      cfg_file = tmpdir.join("jupytext.toml")
      nb_file = tmpdir.join("notebook.ipynb")
      md_file = tmpdir.join("notebook.md")
  
      cfg_file.write(
          """notebook_metadata_filter = "-all"
  cell_metadata_filter = "-all"
  """
      )
      nb = new_notebook(
          cells=[new_markdown_cell("A markdown cell")],
          metadata={
              "kernelspec": {
                  "display_name": "Python [conda env:.conda-week1]",
                  "language": "python",
                  "name": "conda-env-.conda-week1-py",
              },
              "language_info": {
                  "codemirror_mode": {"name": "ipython", "version": 3},
                  "file_extension": ".py",
                  "mimetype": "text/x-python",
                  "name": "python",
                  "nbconvert_exporter": "python",
                  "pygments_lexer": "ipython3",
                  "version": "3.8.3",
              },
              "nbsphinx": {"execute": "never"},
          },
      )
      nbformat.write(nb, str(nb_file))
  
      jupytext_cli([str(nb_file), "--to", "md"])
      md = md_file.read()
  
      compare(md, "A markdown cell\n")
  
      jupytext_cli([str(md_file), "--to", "notebook", "--update"])
      nb2 = nbformat.read(str(nb_file), as_version=4)
      compare_notebooks(nb2, nb)
  
imports: import nbformat
  from nbformat.v4.nbbase import new_markdown_cell, new_notebook
  from jupytext.cli import jupytext
  from jupytext.compare import compare, compare_notebooks
label_desc: Use image node_id 1 for calling a global function with example usage: test_metadata_filters_from_config(tmpdir) without return types