spec\Mdb\PayPal\Ipn\ListenerSpec::it_should_dispatch_an_event_when_a_message_is_invalid PHP Method

    function it_should_dispatch_an_event_when_a_message_is_invalid(Verifier $verifier, EventDispatcher $eventDispatcher)
    {
        $verifier->verify(Argument::type('Mdb\\PayPal\\Ipn\\Message'))->willReturn(false);
        $eventDispatcher->dispatch(Listener::IPN_INVALID_EVENT, Argument::type('Mdb\\PayPal\\Ipn\\Event\\MessageInvalidEvent'))->shouldBeCalled();
        $this->listen();
    }