弹簧集成单元测试出站通道适配器

我有以下配置

<int:channel id="notificationChannel" datatype="com.mycompany.integration.NotificationMessage">
        <int:queue message-store="jdbc-message-store" capacity="1000" />
    </int:channel>

    <int:outbound-channel-adapter ref="notificationHandler"
        method="handle" channel="notificationChannel" >
        <int:poller max-messages-per-poll="100" fixed-delay="60000"
            time-unit="MILLISECONDS" >
            <int:transactional isolation="DEFAULT" />
        </int:poller>
    </int:outbound-channel-adapter>

现在我想对此进行单元测试,我需要等待测试中消息的正确处理,我使用拦截器对其进行了尝试,但这不起作用,因为我只能在消息传递时进行同步,而不能在成功处理消息时进行同步信息.实现在处理完成后发送回复,但这意味着将仅执行此操作以使我的单元测试工作,而在生产环境中,消息头中将没有设置ReplyChannel.如何在不成功在messageHandler中实现请求的情况下实现成功处理请求的同步？

解决方法:

如果您使用的是Spring Integration 2.2.x,则可以参考以下建议…

public class CompletionAdvice extends AbstractRequestHandlerAdvice {

    private final CountDownLatch latch = new CountDownLatch(1);

    @Override
    protected Object doInvoke(ExecutionCallback callback, Object target, Message<?> message) throws Exception {
        Object result = callback.execute();
        latch.countDown();
        return result;
    }

    public CountDownLatch getLatch() {
        return latch;
    }

}

在测试环境中,使用Bean工厂后处理器将建议添加到适配器的处理程序中.

public class AddCompletionAdvice implements BeanFactoryPostProcessor {

    private final Collection<String> handlers;

    private final Collection<String> replyProducingHandlers;

    public AddCompletionAdvice(Collection<String> handlers, Collection<String> replyProducingHandlers) {
        this.handlers = handlers;
        this.replyProducingHandlers = replyProducingHandlers;
    }

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        for (String beanName : handlers) {
            defineAdviceAndInject(beanFactory, beanName, beanName + "CompletionAdvice");
        }
        for (String beanName : replyProducingHandlers) {
            String handlerBeanName = beanFactory.getAliases(beanName + ".handler")[0];
            defineAdviceAndInject(beanFactory, handlerBeanName, beanName + "CompletionAdvice");
        }
    }

    private void defineAdviceAndInject(ConfigurableListableBeanFactory beanFactory, String beanName, String adviceBeanName) {
        BeanDefinition serviceHandler = beanFactory.getBeanDefinition(beanName);
        BeanDefinition advice = new RootBeanDefinition(CompletionAdvice.class);
        ((BeanDefinitionRegistry) beanFactory).registerBeanDefinition(adviceBeanName, advice);
        serviceHandler.getPropertyValues().add("adviceChain", new RuntimeBeanReference(adviceBeanName));
    }

}

将后处理器添加到配置< bean class =“ foo.AddCompletionAdvice” />中.

最后,将建议注入测试用例

@ContextConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
public class TestAdvice {

    @Autowired
    private CompletionAdvice fooCompletionAdvice;

    @Autowired
    private CompletionAdvice barCompletionAdvice;

    @Autowired
    private MessageChannel input;

    @Test
    public void test() throws Exception {
        Message<?> message = new GenericMessage<String>("Hello, world!");
        input.send(message);
        assertTrue(fooCompletionAdvice.getLatch().await(1, TimeUnit.SECONDS));
        assertTrue(barCompletionAdvice.getLatch().await(1, TimeUnit.SECONDS));
    }

}

并等待闩锁.

<int:publish-subscribe-channel id="input"/>

<int:outbound-channel-adapter id="foo" channel="input" ref="x" method="handle"/>

<int:service-activator id="bar" input-channel="input" ref="x"/>

<bean class="foo.AddCompletionAdvice">
    <constructor-arg name="handlers">
        <list>
            <value>foo</value>
        </list>
    </constructor-arg>
    <constructor-arg name="replyProducingHandlers">
        <list>
            <value>bar</value>
        </list>
    </constructor-arg>
</bean>

<bean id="x" class="foo.Foo" />

我将这些类添加到了Gist

编辑：已更新,为最终消费者(无回复)和产生回复的消费者提供一般情况.

标签：unit-testing,spring,spring-integration
来源： https://codeday.me/bug/20191123/2067054.html