class Spec::Mocks::Mock

def method_missing(sym, *args, &block)
  __mock_proxy.instance_eval {@messages_received << [sym, args, block]}
  begin
    return self if __mock_proxy.null_object?
    super(sym, *args, &block)
  rescue NameError
    __mock_proxy.raise_unexpected_message_error sym, *args
  end
end