code: def setUp(self):
      self.tmp_dir = tempfile.TemporaryDirectory()
      self._test_subdir = self.tmp_dir.name
      num_dims = 10
      self._test_observation = np.ones(num_dims) * 1
      self._test_action = np.ones(num_dims) * 2
      self._test_reward = np.ones(num_dims) * 3
      self._test_terminal = np.ones(num_dims) * 4
      self._test_add_count = np.array(7)
  
imports: import tempfile
  import unittest
  import numpy
  import numpy.testing
  import torch
  from reagent.replay_memory import circular_replay_buffer
label_desc: Use image node_id 1 for calling the ReplayBufferTest obj's underlying member method code with example usage: obj.setUp() without return types