code: def test_crs(self):
      crs = self.c.crs
      assert crs["init"] == "epsg:4326"
  
imports: import unittest
  import re
  import pytest
  import fiona
  from .conftest import WGS84PATTERN
label_desc: Use image node_id 20 for calling the ReadingTest obj's underlying member method code with example usage: obj.test_crs() without return types