Test Camel Integration with JUnit - junit

Question

I have a Camel integration flow. At one point, there is client creation, which is as following configuration:
<routeContext id="clientCreation" xmlns="http://camel.apache.org/schema/spring">
<route customId="true" id="clientCreationRouter">
<from uri="direct:client-creation-start" customId="true" id="Client-Creation-Initiator"/>
<bean ref="clientCreationService" method="constructClientDto" />
<bean ref="clientCreationService" method="populateClientRequestMessage" />
<bean ref="clientCreationService" method="saveClientDetails" />
<bean ref="clientCreationService" method="createClientCreationFixedLengthMessage" />
<setHeader headerName="flow-status" customId="true" id="Client-Creation-Update-Header">
<simple>CLIENT_CREATED</simple>
</setHeader>
</route>
</routeContext>
ConstructClientDto has FlowInfo object as the input.
createClientCreationFixedLengthMessage has a String as the output. I want to test this part of the flow. Basically, I want to provide a FlowInfo object which is ready for Client-Creation and then see whether this part of the integration is successful based on the result provided at the end.
So far, this is what I tried:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration (locations={"/META-INF/spring/data-extractor.xml",
"/META-INF/spring/data-splitter.xml",
"/META-INF/spring/client-creation.xml"})
public class ClientCreationFlowTest extends CamelTestSupport{
#Produce (uri = "direct:client-creation-start")
protected ProducerTemplate template;
#EndpointInject(uri = "mock:result")
protected MockEndpoint resultEndpoint;
#Autowired
FlowRepository repository;
#Test
public void testClientCreation () throws Exception {
FlowInfo flowInfo = repository.findById("1234");
template.sendBody(resultEndpoint, flowInfo);
}
}
When I run the test case, I get success. But when I debugged it, it does not seemed to be running through ClientCreationService. I am very new to Camel and the task is critical. Any help would be appreciated.

Answer 1

First, in your route definition you must send the result to mock:result at the end:
<routeContext id="clientCreation" xmlns="http://camel.apache.org/schema/spring">
<route customId="true" id="clientCreationRouter">
<from uri="direct:client-creation-start" customId="true" id="Client-Creation-Initiator"/>
<bean ref="clientCreationService" method="constructClientDto" />
<bean ref="clientCreationService" method="populateClientRequestMessage" />
<bean ref="clientCreationService" method="saveClientDetails" />
<bean ref="clientCreationService" method="createClientCreationFixedLengthMessage" />
<setHeader headerName="flow-status" customId="true" id="Client-Creation-Update-Header">
<simple>CLIENT_CREATED</simple>
</setHeader>
<to uri="mock:result"/>
</route>
</routeContext>
Second, in your JUnit test class you must not send the message to the mock endpoint but to direct:client-creation-start which is automatically done as the template is autowired with this uri:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration (locations={"/META-INF/spring/data-extractor.xml",
"/META-INF/spring/data-splitter.xml",
"/META-INF/spring/client-creation.xml"})
public class ClientCreationFlowTest extends CamelTestSupport{
#Produce(uri = "direct:client-creation-start")
protected ProducerTemplate template;
#EndpointInject(uri = "mock:result")
protected MockEndpoint resultEndpoint;
#Autowired
FlowRepository repository;
#Test
public void testClientCreation () throws Exception {
FlowInfo flowInfo = repository.findById("1234");
resultEndpoint.expectedBodiesReceived("my string output");
template.sendBody(flowInfo);
resultEndpoint.assertIsSatisfied();
}
}

Answer 2

Try template.sendBody(flowInfo); instead of directly sending it to the result endpoint, which bypasses your whole route.