code: def testCreateOutputDirUnableToCreateDir(self, mock_os):
      # Should raise error when unable to create dir.
      test_subdir = "temptest"
      full_testdir_path = os.path.join(self.testdata_dir, test_subdir)
      mock_os.path.isdir.return_value = False
  
      with mock.patch.object(mock_os, "makedirs") as makedirs_mock:
          makedirs_mock.side_effect = OSError()
          with self.assertRaises(OSError):
              atlasmaker_io.create_output_dir_if_not_exist(
                  full_testdir_path
              )
  
imports: import io
  import os
  import shutil
  import mock
  from absl.testing import absltest
  from PIL import Image
  from requests.exceptions import ConnectTimeout, ReadTimeout, InvalidURL
  import atlasmaker_io
label_desc: Use image node_id 3 for calling the AtlasmakerIOTests obj's underlying member method code with example usage: obj.testCreateOutputDirUnableToCreateDir(mock_os) without return types