code: def test_initialize_batch(self):
      x = self.random_batch.initialize_batch()
  
      self.assertEqual(x, self.expected_optimum_position)
  
file_path: GPyOpt/GPyOpt/testing/evaluators_tests/test_batch_random.py
imports: import unittest
  from mock import Mock
  import numpy
  from GPyOpt.core.evaluators import RandomBatch
  from GPyOpt.acquisitions import AcquisitionEI
  from GPyOpt.core.task.space import Design_space
  from GPyOpt.optimization.acquisition_optimizer import ContextManager
label_desc: Use image node_id 2 for calling the TestRandomBatch obj's underlying member method code with example usage: obj.test_initialize_batch() without return types