content: import functools
  
  from kopf.reactor.registries import get_callable_id
  
  
  # Used in the tests. Must be global-scoped, or its qualname will be affected.
  def some_fn():
      pass
  
  
  def test_id_of_simple_function():
      fn_id = get_callable_id(some_fn)
      assert fn_id == 'some_fn'
  
  
  def test_id_of_single_partial():
      partial_fn = functools.partial(some_fn)
  
      fn_id = get_callable_id(partial_fn)
      assert fn_id == 'some_fn'
  
  
  def test_id_of_double_partial():
      partial1_fn = functools.partial(some_fn)
      partial2_fn = functools.partial(partial1_fn)
  
      fn_id = get_callable_id(partial2_fn)
      assert fn_id == 'some_fn'
  
  
  def test_id_of_single_wrapper():
  
      @functools.wraps(some_fn)
      def wrapped_fn():
          pass
  
      fn_id = get_callable_id(wrapped_fn)
      assert fn_id == 'some_fn'
  
  
  def test_id_of_double_wrapper():
  
      @functools.wraps(some_fn)
      def wrapped1_fn():
          pass
  
      @functools.wraps(wrapped1_fn)
      def wrapped2_fn():
          pass
  
      fn_id = get_callable_id(wrapped2_fn)
      assert fn_id == 'some_fn'
  
  
  def test_id_of_lambda():
      some_lambda = lambda: None
  
      fn_id = get_callable_id(some_lambda)
      assert fn_id.startswith(f'lambda:{__file__}:')
  