old_contents: from crosscompute.macros.iterable import extend_uniquely
  
  
  def test_extend_uniquely():
      items = [1, 2, 3, 4, 5]
      new_items = [1, 2, 33, 44, 52]
      extend_uniquely(items, new_items)
      assert len(items) == 8
  
new_contents: from crosscompute.macros.iterable import extend_uniquely
  
  
  def test_extend_uniquely():
      items = [1, 2]
      extend_uniquely(items, [2, 3])
      assert len(items) == 3
  
subject: Update test_macros_iterable.py