code: def test_list(self):
      features = list(self.c)
      assert len(features) == 19
  
file_path: Fiona/tests/test_non_counting_layer.py
imports: import unittest
  import pytest
  import fiona
  from fiona.errors import FionaDeprecationWarning
label_desc: Use image node_id 4 for calling the TestNonCountingLayer obj's underlying member method code with example usage: obj.test_list() without return types