Apache camel Junit mock issue

Question

I am writing a JUnit test case for a Route class. I'm facing a problem while mocking ServiceClass inside the Processor class.

 public class SaveRouteTest extends CamelTestSupport {
    private Exchange exchange;
    protected ProducerTemplate template;
    private SaveRequestBuilder saveRequestBuilder;
    private SaveRoute route;
    private SaveProcessor saveProcessor;
    private ApplicationContext springContext = createApplicationContext();

    @Mock
    SaveServiceClient saveServiceClient;//Not able to mock this class
    @BeforeClass
    public void prepareTestCamelContext() throws Exception {
        route = springContext.getBean("saveRoute", saveRoute.class);
        saveProcessor = springContext.getBean("saveProcessor", 
      SaveProcessor.class);
        saveRequestBuilder = springContext.getBean("saveRequestBuilder", 
         SaveRequestBuilder.class);
    }
    @BeforeMethod
    public void init() throws SQLException, ServiceException {
        MockitoAnnotations.initMocks(this);
        exchange = new DefaultExchange(context);
    }
    @Override
    protected RouteBuilder[] createRouteBuilders() throws Exception {
        template = context.createProducerTemplate();
        return new RouteBuilder[]{route};
    }
    @Test
    public void testHotelCommitTransactionRouteSuccessReturn() throws 
   Exception {    

    when(saveServiceClient.invokeServiceWithName(anyObject()).
     thenReturn("Response");
        exchange.getIn().setBody("Request detail");
        exchange = template.send("direct:SaveRoute",exchange);
    }
    protected ApplicationContext createApplicationContext() {
        return new ClassPathXmlApplicationContext("classpath*:config/spring/testContext.xml");
    }
}

@Component
public class SaveRoute extends SPRouteBuilder {
    @Autowired
    private SaveProcessor saveProcessor;
    @Override
    public void configure() throws Exception {
        from("direct:SaveRoute")
                .routeId("save")
                .to("direct:ProcessSaveFlow")
                .end();
        from("direct:ProcessSaveFlow")
                        .process(saveProcessor)
        .end();
    }
}


public class SaveProcessor implements Processor {
    @Autowired
    SaveServiceClient saveServiceClient;
    @Override
    public void process(Exchange exchange) throws Exception {
        //This line of code not able to mock
        String response = saveServiceClient.invokeServiceWithName(exchange);
        exchange.getIn().setBody(response);
    }
}

How to resolve mocking of saveServiceClient.invokeServiceWithName? The debugger is always going inside this method. I tried using both mock objects and an injected mock. I can't make the method call directly.

staszko032 · Answer 1 · 2018-05-16T15:56:09.457

You are creating a mock object, however you are not injecting it anywhere (normally you are doing it with @InjectMocks annotation - read about it).

I think there are several possibilities:

Provide a @MockBean object, which will be considered as a bean candidate in context.

There is a code example for mocking beans.

    @RunWith ( CamelSpringRunner.class )
    @SpringBootTest
    public class RouteBuilderTest extends CamelSpringTestSupport {

    @Autowired
    private ApplicationContext applicationContext;

    @MockBean
    private ServiceClient serviceClient;

    @Override
    public void setUp() throws Exception {
        MockitoAnnotations.initMocks( this );
        super.setUp();
    }

    @Override
    public void tearDown() {
    }

    @Test
    public void test() {

        when( serviceClient.doStuff() ).thenReturn( "mockedResponse" );
    }
    }

Mock SaveProcessor and inject it to Route class - you shouldn't take care of ServiceClient, because you are trying to test too much. Tests for SaveProcessor should be separated, tests for route don't need this logic.

Apache camel Junit mock issue

1 Answers1