content: from kopf import ActivityRegistry, ResourceRegistry, OperatorRegistry
  
  
  def test_activity_registry(activity_registry_cls):
      registry = activity_registry_cls()
      assert isinstance(registry, ActivityRegistry)
  
  
  def test_resource_registry(resource_registry_cls):
      registry = resource_registry_cls()
      assert isinstance(registry, ResourceRegistry)
  
  
  def test_operator_registry(operator_registry_cls):
      registry = operator_registry_cls()
      assert isinstance(registry, OperatorRegistry)
      assert not isinstance(registry, ResourceRegistry)
  