unit testing - Mockito - Invalid use of argument matchers

Question

I have Junit test that is testing jms message sending. I am using Spring jmsTemplate to to do this. Here I as in the following code I want to check whether the JMS template has called send message regardless what is it in the values of actuall parameters that are passed.

my publisher method the uses the jmsTemplate to send method looks like following inside..

jmsTemplate.send(jmsQueueProperties.getProperty(key), new MessageCreator()
{
    public Message createMessage(Session session) throws JMSException
    {
        ObjectMessage obj = session.createObjectMessage(dialogueServiceResponse);
        return obj;
}
});

in My tests..

JmsTemplate mockTemplate = Mockito.mock(JmsTemplate.class);
...
publisher.publishServiceMessage(response);
....
Mockito.verify(mockTemplate, 
    Mockito.times(1)).send("appointment.queue", 
        Mockito.any(MessageCreator.class));

But when in the execution i get

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: Invalid use of argument matchers! ....

Cause is due to Mockito.any(MessageCreator.class) , but isn't there a way to test my send method is getting executed without creating an actual object in the MessageCreator.

Update And is there a way to check my session.createObjectMessage(dialogueServiceResponse) is getting called as well

Answer 1

I think the rest of the message tells you what the problem is. When you use an argument matcher for one of the arguments, all the other arguments must also use an argument matcher:

Mockito.verify(mockTemplate, Mockito.times(1)).send(
    Mockito.eq("appointment.queue"), 
    Mockito.any(MessageCreator.class));