code: def test_calc_seq(feature_seq, runner):
      result = runner.invoke(
          main_group,
          [
              "calc",
              "TEST",
              "f.properties.AREA / f.properties.PERIMETER",
          ],
          feature_seq,
      )
      assert result.exit_code == 0
  
      feats = _load(result.output)
      assert len(feats) == 2
      for feat in feats:
          assert (
              feat["properties"]["TEST"]
              == feat["properties"]["AREA"]
              / feat["properties"]["PERIMETER"]
          )
  
file_path: Fiona/tests/test_fio_calc.py
imports: import json
  from click.testing import CliRunner
  from fiona.fio.main import main_group
label_desc: Use image node_id 3 for calling a global function with example usage: test_calc_seq(feature_seq, runner) without return types