spec\Mdb\PayPal\Ipn\ListenerSpec::it_should_attach_a_listener_for_the_message_invalid_event PHP Метод

    function it_should_attach_a_listener_for_the_message_invalid_event(EventDispatcher $eventDispatcher)
    {
        $eventDispatcher->addListener(Listener::IPN_INVALID_EVENT, Argument::type('callable'))->shouldBeCalled();
        $this->onInvalid(function (MessageInvalidEvent $event) {
        });
    }