我一直在寻找关于如何最好地测试springmvc控制器方法的提示。我提出了一个非常简短的解决方案，但是有一个针对异步线程行为进行测试的试错解决方案。以下是示例代码，仅用于演示概念，可能有一两个输入错误：
控制器类：

@Autowired
Publisher<MyResponse> responsePublisher;

@RequestMapping("/mypath")
public SseEmitter index() throws IOException {
    SseEmitter emitter = new SseEmitter();
    Observable<MyResponse> responseObservable = RxReactiveStreams.toObservable(responsePublisher);

    responseObservable.subscribe(
            response -> {
                try {
                    emitter.send(response);
               } catch (IOException ex) {
                    emitter.completeWithError(ex);
               }
            },
            error -> {
                emitter.completeWithError(error);
            },
            emitter::complete
    );

    return emitter;
}

测试等级：

//A threaded dummy publisher to demonstrate async properties.
//Sends 2 responses with a 250ms pause in between.
protected static class MockPublisher implements Publisher<MyResponse> {
    @Override
    public void subscribe(Subscriber<? super MyResponse> subscriber) {
        new Thread() {
            @Override
            public void run() {
                try {
                    subscriber.onNext(response1);
                    Thread.sleep(250);
                    subscriber.onNext(response2);
                } catch (InterruptedException ex) {
                }
                subscriber.onComplete();
            }
        }.start();
    }
}

//Assume @Configuration that autowires the above mock publisher in the controller.

//Tests the output of the controller method.
@Test
public void testSseEmitter() throws Exception {
    String path = "http://localhost/mypath/";
    String expectedContent = "data:" + response1.toString() + "\n\n" +
                             "data:" + response2.toString() + "\n\n");

    //Trial-and-Error attempts at testing this SseEmitter mechanism have yielded the following:
    //- Returning an SseEmitter triggers 'asyncStarted'
    //- Calling 'asyncResult' forces the test to wait for the process to complete
    //- However, there is no actual 'asyncResult' to test.  Instead, the content is checked for the published data.
    mockMvc.perform(get(path).contentType(MediaType.ALL))
        .andExpect(status().isOk())
        .andExpect(request().asyncStarted())
        .andExpect(request().asyncResult(nullValue()))
        .andExpect(header().string("Content-Type", "text/event-stream"))
        .andExpect(content().string(expectedContent))
}

如注解中所述，调用asyncresult（）是为了确保发布者在测试完成之前完成其工作并发送这两个响应。如果没有它，内容检查将失败，因为内容中只存在一个响应。但是，没有要检查的实际结果，因此asyncresult为空。
我的具体问题是，是否有更好、更精确的方法来强制测试等待异步进程完成，而不是这里的klugie方法等待不存在的异步结果。我更广泛的问题是，与这些异步函数相比，是否有其他libs或spring方法更适合于此。谢谢！