How to test existing camel endpoints with mock? - spring-boot

Question

Im currently working with Camel's mock component and i would like to test it on an existing routes. Basically i want to retain the existing routes defined in the app, but inject a few mocks during test, to verify or at least peek on the current exchange contents.
Based on the docs and from the Apache Camel Cookbook. I've tried to use #MockEndpoints
Here's the route builder
#Component
public class MockedRouteStub extends RouteBuilder {
private static final Logger LOGGER = LoggerFactory.getLogger(MockedRouteStub.class);
#Override
public void configure() throws Exception {
from("direct:stub")
.choice()
.when().simple("${body} contains 'Camel'")
.setHeader("verified").constant(true)
.to("direct:foo")
.otherwise()
.to("direct:bar")
.end();
from("direct:foo")
.process(e -> LOGGER.info("foo {}", e.getIn().getBody()));
from("direct:bar")
.process(e -> LOGGER.info("bar {}", e.getIn().getBody()));
}
}
Here's my test (currently its a springboot project):
#RunWith(SpringRunner.class)
#SpringBootTest
#MockEndpoints
public class MockedRouteStubTest {
#Autowired
private ProducerTemplate producerTemplate;
#EndpointInject(uri = "mock:direct:foo")
private MockEndpoint mockCamel;
#Test
public void test() throws InterruptedException {
String body = "Camel";
mockCamel.expectedMessageCount(1);
producerTemplate.sendBody("direct:stub", body);
mockCamel.assertIsSatisfied();
}
}
message count is 0 and it looks more like #MockEndpoints is not triggered.
Also, logs indicate that the log is triggered
route.MockedRouteStub : foo Camel
An alternative i've tried is to use an advice:
...
#Autowired
private CamelContext context;
#Before
public void setup() throws Exception {
context.getRouteDefinitions().get(0).adviceWith(context, new AdviceWithRouteBuilder() {
#Override
public void configure() throws Exception {
mockEndpoints();
}
});
}
The startup logs indicate that advice is in place:
c.i.InterceptSendToMockEndpointStrategy : Adviced endpoint [direct://stub] with mock endpoint [mock:direct:stub]
But still my test fails with the message count = 0.

Answer 1

Posting the answer which worked for the setup that i have.
Without any changes to the RouteBuilder, the Test would look something like this:
#RunWith(CamelSpringBootRunner.class)
#SpringBootTest
#MockEndpoints
public class MockedRouteStubTest {
#Autowired
private ProducerTemplate producerTemplate;
#EndpointInject(uri = "mock:direct:foo")
private MockEndpoint mockCamel;
#Test
public void test() throws InterruptedException {
String body = "Camel";
mockCamel.expectedMessageCount(1);
producerTemplate.sendBody("direct:stub", body);
mockCamel.assertIsSatisfied();
}
}