module ActionView::TestCase::Behavior::ClassMethods

def inherited(descendant) # :nodoc:
  super
  descendant_content_class = content_class.dup
  if descendant_content_class.respond_to?(:set_temporary_name)
    descendant_content_class.set_temporary_name("rendered_content")
  end
  descendant.content_class = descendant_content_class
end