code: def testLowCapacity(self):
      with self.assertRaisesRegex(
          ValueError, "There is not enough capacity"
      ):
          circular_replay_buffer.ReplayBuffer(
              stack_size=10,
              replay_capacity=10,
              batch_size=BATCH_SIZE,
              update_horizon=1,
              gamma=1.0,
          )
  
      with self.assertRaisesRegex(
          ValueError, "There is not enough capacity"
      ):
          circular_replay_buffer.ReplayBuffer(
              stack_size=5,
              replay_capacity=10,
              batch_size=BATCH_SIZE,
              update_horizon=10,
              gamma=1.0,
          )
  
      # We should be able to create a buffer that contains just enough for a
      # transition.
      circular_replay_buffer.ReplayBuffer(
          stack_size=5,
          replay_capacity=10,
          batch_size=BATCH_SIZE,
          update_horizon=5,
          gamma=1.0,
      )
  
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 6 for calling the ReplayBufferTest obj's underlying member method code with example usage: obj.testLowCapacity() without return types