code: def test_fail_doubleupdate(self):
      self._sample1()
      self._set1()
      self.assertRaises(AssertionError, self._set1)
  
imports: import collections
  import copy
  import os
  import tempfile
  import unittest
  import numpy
  import pytest
  import torch
  from pfrl import replay_buffer, replay_buffers
label_desc: Use image node_id 6 for calling the TestReplayBufferFail obj's underlying member method code with example usage: obj.test_fail_doubleupdate() without return types