code: def test_closed_crs(self):
      # Crs is lazy too, never computed in this case. TODO?
      self.c.close()
      assert self.c.crs is None
  
imports: import unittest
  import re
  import pytest
  import fiona
  from .conftest import WGS84PATTERN
label_desc: Use image node_id 22 for calling the ReadingTest obj's underlying member method code with example usage: obj.test_closed_crs() without return types