code: def test_prime_queue_all_empty():
      optimizer = BayesianOptimization(
          target_func, PBOUNDS, random_state=1
      )
      assert len(optimizer._queue) == 0
      assert len(optimizer.space) == 0
  
      optimizer._prime_queue(init_points=0)
      assert len(optimizer._queue) == 1
      assert len(optimizer.space) == 0
  
imports: import pytest
  import numpy
  from bayes_opt import UtilityFunction
  from bayes_opt import BayesianOptimization
  from bayes_opt.logger import ScreenLogger
  from bayes_opt.event import Events, DEFAULT_EVENTS
  from bayes_opt.util import NotUniqueError
  import pickle
  import os
label_desc: Use image node_id 7 for calling a global function with example usage: test_prime_queue_all_empty() without return types