code: def test_ca_bundle_path__env_var_skip(
      c_set_ca_bundle_path_mock, env_var
  ):
      with patch.dict(
          "os.environ",
          {env_var: "/tmp/dummy/path/cacert.pem"},
          clear=True,
      ):
          set_ca_bundle_path()
      c_set_ca_bundle_path_mock.assert_called_with("")
  
file_path: pyproj/test/test_network.py
imports: from unittest.mock import patch
  import certifi
  import pytest
  from pyproj.network import set_ca_bundle_path
label_desc: Use image node_id 4 for calling a global function with example usage: test_ca_bundle_path__env_var_skip(c_set_ca_bundle_path_mock, env_var) without return types