Unit testing Camel/RabbitMQ routes issue - spring-boot

Question

I'm having issue unit testing a camel route which uses rabbitmq for the broker.
I've been researching for weeks but haven't found an effective way to do this.
Firstly, I was having an issue with NOT calling rabbitmq in my test, and to keep this a unit test and not an integration test. This was achieved by using advicewith and switch out the queue for mock queues.
However, with the following code the messages are not reaching the result or end queue (MOBILE_QUEUE).
java.lang.AssertionError: mock://result Received message count. Expected: <1> but was: <0>
Expected :<1>
Actual :<0>
Here is my route, which imports rabbitmq.class
from(TEST_QUEUE).to(MOBILE_QUEUE).routeId("test2phone");
My config rabbitmq.class
#Component
public class RabbitMQ extends Properties {
public final String TEST_QUEUE = CreateRabbitMQQueue("TestQueue", "camel");
public final String MOBILE_QUEUE = CreateRabbitMQQueue("MobileQueue", "camel");
public static String CreateRabbitMQQueue(String QueueName, String RoutingKey)
{
String hostv;
String portv;
String username;
String password;
hostv = "mq-staging";
portv = System.getenv("SERVICE_PORT_AMQP");
username = System.getenv("V_RABBIT_USERNAME");
password = System.getenv("V_RABBIT_PASSWORD");
UriComponentsBuilder uriBuilder = UriComponentsBuilder
.fromPath("/" )
.scheme("rabbitmq")
.host(hostv)
.port(portv)
.path("/" + QueueName)
.queryParam("username",username)
.queryParam("password", password)
.queryParam("routingKey",RoutingKey)
.queryParam("queue","Q" + QueueName);
return uriBuilder.toUriString();
}
}
And my unit test
#RunWith(CamelSpringRunner.class)
#MockEndpoints
#UseAdviceWith
#SpringBootTest
public class RouteTester extends CamelTestSupport {
String TEST_QUEUE;
String MOBILE_QUEUE;
#Autowired
Routes routes;
#Autowired
CamelContext context;
#Autowired
ProducerTemplate template;
#Before
public void setUp() throws Exception {
TEST_QUEUE = routes.getTEST_QUEUE();
MOBILE_QUEUE = routes.getMOBILE_QUEUE();
context.getRouteDefinition("test2phone").adviceWith(context, new Routes() {
#Override
public void configure() throws Exception {
interceptSendToEndpoint(TEST_QUEUE)
.skipSendToOriginalEndpoint()
.to("mock:testQ");
interceptSendToEndpoint(MOBILE_QUEUE)
.skipSendToOriginalEndpoint()
.to("mock:result");
}
});
context.start();
}
#Test
public void testTest() throws Exception {
String body = "hello123";
MockEndpoint resultEndpoint = context.getEndpoint("mock:result", MockEndpoint.class);
resultEndpoint.expectedMessageCount(1);
resultEndpoint.expectedBodiesReceived(body);
template.sendBody(TEST_QUEUE, body);
resultEndpoint.assertIsSatisfied();
}
#After
public void TearDown() throws Exception {
context.stop();
}
}

Answer 1

interceptSendToEndpoint is useful to intercepting output endpoint. You probably want replace input endpoint and intercept output endpoint. See AdviceWith.
This should work:
context.getRouteDefinition("test2phone").adviceWith(context, new AdviceWithRouteBuilder() {
#Override
public void configure() throws Exception {
replaceFromWith("direct:test");
interceptSendToEndpoint(MOBILE_QUEUE)
.skipSendToOriginalEndpoint()
.to("mock:result");
}
});
And test your route with:
template.sendBody("direct:test", body);