如何测试 Spring 集成变压器？

Question

I am new to Spring Integration (been using Spring before). I have made a transformer like this:

@Transformer(inputChannel = "signering", outputChannel = "validering")

and now I want to test it. So I have done like this in my test:

@Autowired
MessageChannel signering;

@Autowired
PollableChannel validering;

When I invoke the transformer in my test it seems to work

signering.send(msg.build());

but I am unable to intercept the outgoing message (which is what I want). Instead it seems to go to the real bean validering and onwards. I have added a.receive call after the send call, but it gets nothing. And the Internet is not really helpful right now. What examples I find for Spring Integration testing seems to be using XML context, and they are pretty old at that. What is the current way of doing this kind of testing?

Answer 1

In your test case, add a ChannelInterceptor to the output channel, before sending the request, to examine the output.