如何测试骆驼路由依次调用了不同的端点？

Question

I use Apache Camel to orchestrate a number of HTTP calls to three different endpoints. This works correctly, but I'd like to unit test this Camel route as well.

I can correctly assert that the three endpoints were called, but I don't know how to verify that they were called in the correct order. I have looked into using MockEndpoint and NotifyBuilder .

How can I verify in a Camel Spring JUnit test that the endpoints were called in the correct order?

Answer 1

Hmm I am not certain if there is an easy way to do this, but you could use the AdviceWithRouteBuilder to weave a bean into your route that puts a counter in the header before each send.

Something like:

weaveById("send1")
    .before()
    .bean(CounterIncrementor.class);

weaveById("send2")
    .before()
    .bean(CounterIncrementor.class);

weaveById("send3")
    .before()
    .bean(CounterIncrementor.class);

..................

List<Exchange> list = getMockEndpoint("mock:extract").getReceivedExchanges();
Exchange exchange = list.get(1);
Message in = exchange.getIn();
in.getHeader("MyCounterHeader", Integer.class);

//TODO verify you received the correct number