code: def test_build_unbuid():
      f = 10
      i = AnnoyIndex(f, "euclidean")
      for j in range(1000):
          i.add_item(j, [random.gauss(0, 1) for x in range(f)])
      i.build(10)
  
      for j in range(100):
          i.unbuild()
          i.build(10)
  
      assert i.get_n_items() == 1000
  
imports: import pytest
  import random
  from annoy import AnnoyIndex
label_desc: Use image node_id 3 for calling a global function with example usage: test_build_unbuid() without return types