new_contents: import pytest
  #from .exemplar_generators import EXEMPLAR_PRIMITIVE_GENERATORS
  from .context import tohu
  from tohu.v6.primitive_generators import Integer
  from tohu.v6.derived_generators import Apply
  
  def test_spawn_apply_generator():
      """
      Test that an Apply generator can be spawned and the spawned version produces the same elements.
      """
      num_items = 50
  
      def add(x, y):
          return x + y
  
      a = Integer(10, 99)
      b = Integer(10, 99)
      g = Apply(add, a, b)
  
      a.reset(seed=11111)
      b.reset(seed=22222)
      g.reset(seed=12345)
  
      # Let g generate a few items
      items_g_pre_spawn = list(g.generate(num_items))
  
      # Spawn g and let both generate a few more items
      h = g.spawn()
      items_g_post_spawn = list(g.generate(num_items))
      items_h_post_spawn = list(h.generate(num_items))
  
      # Reset h (together with a and b) and re-generate the full list of items
      a.reset(seed=11111)
      b.reset(seed=22222)
      h.reset(seed=12345)
      items_h_all = list(h.generate(2*num_items))
  
      # Verify that the items generated by h after spawning
      # as well as the full sets of items are identical.
      assert items_h_post_spawn == items_g_post_spawn
      assert items_h_all == items_g_pre_spawn + items_g_post_spawn
  
subject: Add test that an Apply generator can be spawned and the spawned version produces the same elements