java - Camel : How to mock a route with two endpoints

Question

我是 Camel 新手，我需要了解如何对具有两个端点的路线进行单元测试。第一个端点获取用户 ID 并将其用于第二个端点。

public RouteBuilder routeBuilder() {
    return new RouteBuilder() {
        @Override
        public void configure() throws HttpOperationFailedException {
            this.from(MyServiceConstant.ROUTE)
                    .setHeader(...)
                    .setHeader(...)
                    .to(MyConstants.THE_FIRST_ROUTE)
                    .setHeader(...)
                    .setHeader(...)
                    .process(...)
                    .setProperty(...)
                    .to(MyConstants.THE_SECOND_ROUTE)
        }
    };
}

所以我必须在我的测试类中模拟 MyConstants.THE_FIRST_ROUTE 和 MyConstants.THE_SECOND_ROUTE 。我这样做了，但不知道如何编写测试。我所做的只是到达第二个端点，但不知道如何触发第一个端点。

@Produce(uri = MyServiceConstant.ROUTE)
private MyService myService;

@EndpointInject(uri = "mock:" + MyConstants.THE_FIRST_ROUTE)
private MockEndpoint mockFirstService;

@EndpointInject(uri = ""mock:" + MyConstants.THE_SECOND_ROUTE)
private MockEndpoint mockSecondService;

@Test
@DirtiesContext
public void getDetails()throws Exception {

    // **The missing part**: Is this the right way to call my first service? 
    this.mockFirstService.setUserId("123456");

    // this returns a JSON that I'll compare the service response to
    this.mockSecondService.returnReplyBody(...PATH to JSON file);

    UserDetail userDetailsInfo = this.myService.getUserDetails(...args)

    // all of my assertions
    assertEquals("First name", userDetailsInfo.getFirstName());

    MockEndpoint.assertIsSatisfied();
}

Answer 1

我今天有时间使用 Camel Spring boot 原型(prototype)快速破解一些演示代码。开始了。我的路线从计时器组件生成消息。不使用向端点的显式传递。

//Route Definition - myBean::saySomething() always returns String "Hello World"
@Component
public class MySpringBootRouter extends RouteBuilder {

    @Override
    public void configure() {
        from("timer:hello?period={{timer.period}}").routeId("hello_route")
            .transform().method("myBean", "saySomething")
            .to("log:foo")
                .setHeader("test_header",constant("test"))
            .to("log:bar");
    }

}

@RunWith(CamelSpringBootRunner.class)
@SpringBootTest
public class MySpringBootRouterTest {

    @Autowired
    SpringCamelContext defaultContext;

    @EndpointInject("mock:foo")
    private MockEndpoint mockFoo;
    @EndpointInject("mock:bar")
    private MockEndpoint mockBar;

    @Test
    @DirtiesContext
    public void getDetails() throws Exception {
        assertNotNull(defaultContext);
        mockBar.expectedHeaderReceived("test_header", "test");
        mockBar.expectedMinimumMessageCount(5);
        MockEndpoint.setAssertPeriod(defaultContext, 5_000L);
        MockEndpoint.assertIsSatisfied(mockFoo, mockBar);
        mockFoo.getExchanges().stream().forEach( exchange -> assertEquals(exchange.getIn().getBody(),"Hello World"));

        //This works too
        //mockBar.assertIsSatisfied();
        //mockFoo.assertIsSatisfied();
    }

    @Before
    public void attachTestProbes() throws Exception {
        //This is Camel 3.0 API with RouteReifier
        RouteReifier.adviceWith(defaultContext.getRouteDefinition("hello_route"), defaultContext, new AdviceWithRouteBuilder() {
            @Override
            public void configure() throws Exception {
           //Hook into the current route, intercept log endpoints and reroute them to mock
                interceptSendToEndpoint("log:foo").to("mock:foo");
                interceptSendToEndpoint("log:bar").to("mock:bar");
            }
        });
    }

}

对 future 访问者的警告:此处的测试用例演示了如何使用 mock: 拦截 log: 端点并对其设置期望。测试用例可能没有测试任何有值(value)的东西。