code: def test_replay(self):
      self.start_tests(name="replay")
  
      memory = dict(type="replay")
      update = dict(unit="timesteps", batch_size=4)
      self.unittest(update=update, memory=memory)
  
      memory = dict(type="replay")
      update = dict(unit="episodes", batch_size=1)
      self.unittest(update=update, memory=memory)
  
      memory = 100
      update = 4
      self.unittest(update=update, memory=memory)
  
imports: import unittest
  from test.unittest_base import UnittestBase
label_desc: Use image node_id 2 for calling the TestMemories obj's underlying member method code with example usage: obj.test_replay() without return types