code: def setUp(self):
      super(IOTest, self).setUp()
      tmpdir = self.get_temp_dir()
      tmpdir = os.path.join(tmpdir, "io_test")
      os.mkdir(tmpdir)
      self._test_dir = tmpdir
  
      self._checkpoint_prefix = os.path.join(
          self.get_temp_dir(), "ckpt"
      )
      os.mkdir(self._checkpoint_prefix)
      self._save_dir = os.path.join(self.get_temp_dir(), "save")
      os.mkdir(self._save_dir)
  
imports: import os
  import shutil
  from absl.testing import parameterized
  import numpy
  from tensorflow.python.data.experimental.ops import io
  from tensorflow.python.data.kernel_tests import checkpoint_test_base
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import combinations
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the IOTest obj's underlying member method code with example usage: obj.setUp() without return types