使用 MockEndPointsandSkip 进行 Camel 单元测试 [英] Camel unit testing with MockEndPointsandSkip

问题描述

我是 Camel 新手，正在尝试一些代码来了解 MockEndpoints 功能的工作原理，但它不起作用.这是我想使用 MockEndpoints 进行单元测试的 Camel 路由.属性值在 application.properties 文件中定义.

Am a Camel newbie and am trying out some code to understand how the MockEndpoints functionality works, but it is not working. Here are my Camel routes that I want to unit test using MockEndpoints. The property values are defined in the application.properties file.

from("kafka:{{kafka.servers}}?topic={{kafka.consumer.topic}}&groupId={{kafka.consumer.groupId}}")
    .to("direct:notify");

from("direct:notify")
    .log("direct:notfy");

这是我的测试代码，它未能接受 1 个交换的断言.Producer 似乎从未将消息发送到我的 Kafka Mockendpoint:

Here is my Test code which is failing the assertion of receiving 1 Exchange. It appears that the Producer is never sending the message to my Kafka Mockendpoint:

@RunWith(SpringRunner.class)
@SpringBootTest
@MockEndpointsAndSkip("kafka:{{kafka.servers}}?*|direct:notify")
public class NotificationApplicationTests {     

    @Autowired
    private CamelContext context;

    @Value("${kafka.servers}")
    private String kafkaServers;

    @EndpointInject(uri="mock:kafka:{{kafka.servers}}")
    private MockEndpoint mockKafka;

    @EndpointInject(uri="mock:direct:notify")
    private MockEndpoint mockDirect;

    @Autowired
    private ProducerTemplate notiProducer;

    @Test
    public void testMockEndpoints() throws Exception{                                       

        mockDirect.setExpectedMessageCount(1);
        mockDirect.whenAnyExchangeReceived( (Exchange exchange) -> {
            //NEVER GETS HERE!!
            log.info("MOCK DIRECT exchange received");          
        });     

        String payload = "{'email': '[e-mail]', 'data': 'ABC1234'}";

        notiProducer.sendBody(mockKafka, payload);

        mockDirect.assertIsSatisfied();

    }

}

推荐答案

如果你期望它是一个正则表达式，你的模拟端点是错误的.

Your mock endpoint is wrong if you expect it to be a regular expression.

@MockEndpointsAndSkip("kafka:{{kafka.servers}}?*|direct:notify")

注意在正则表达式中使用 *.由于它不是通配符，您通常需要使用 .* 来匹配 0..n 个字符.多看看正则表达式，也许可以使用正则表达式测试器，您可以在网上找到它或将其作为插件安装在 Java 编辑器中.

Take care about using * in a regular expression. As its not a wildcard, you typically would need to use .* to match 0..n characters. Look at bit more on regular expression and maybe use a regular expression tester which you can find online or install as plugin in your Java editor.

另外，如果你想替换以 kafka 开头的路由，那么你需要做一些其他的事情，因为 @MockEndpointsAndSkip 不是一开始的.但是对于发送.请参阅建议测试部分中的 replaceFrom:http://camel.apache.org/advicewith.html.

Also if you want to replace the route starting with kafka, then you need to do something else as @MockEndpointsAndSkip is not for the start. But for sending. See about replaceFrom in the advice-with testing section: http://camel.apache.org/advicewith.html.

我的书 Camel in Action 2nd edition 在整个测试章节中有更多的文档:https://www.manning.com/books/camel-in-action-second-edition 如果您正在寻找优秀的 Camel 文档.

And my book Camel in Action 2nd edition has a lot more documentation in the entire testing chapter: https://www.manning.com/books/camel-in-action-second-edition if you are looking for great Camel documentation.

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