code: def setUp(self):
      self.testdata_dir = os.path.join(os.getcwd(), TESTDATA_DIR)
  
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 1 for calling the AtlasmakerIOTests obj's underlying member method code with example usage: obj.setUp() without return types