在Spring Boot应用中测试WebSocket

Question

我不理解如何为Spring Boot应用程序中的WebSocket编写正确的测试用例。我有一个实现了WebSocketHandler接口的类，并将此处理程序添加到WebSocketConfigurer中：

@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {

@Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
    registry.addHandler(logWebSocketHandler() , "/test")
            .addInterceptors(new HttpSessionHandshakeInterceptor())
            .setAllowedOrigins("*");
}

@Bean
public LogWebSocketHandler logWebSocketHandler(){
    return new LogWebSocketHandler();
}
}

但是当我编写下面的测试用例时，会出现异常：

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration({App.class})
@WebAppConfiguration
public class LogsControllerTest  {

private WebSocketContainer container;

@Before
public void setup() {
    container = ContainerProvider.getWebSocketContainer();

}

@Test
public void testGetLog() throws Exception {
    Session session = container.connectToServer(new TestEndpoint(),
            URI.create("ws://127.0.0.1:8080/test"));
}
}

异常： javax.websocket.DeploymentException：启动WebSocket连接的HTTP请求失败。

我看到如果我设置ws://127.0.0.1:8080/test/（末尾带有斜杠）会起作用，但它没有起作用。

我做错了什么？

- dzrkot

Answer 1

我发现了解决方案：

添加注释@WebIntegrationTest(value = 8080)或者您可以指定randomPort = true 之后添加：

@ClientEndpoint
public class TestWebSocketClient {
    Session session;

    @OnOpen
    public void onOpen(final Session session){
        this.session = session;
    }
}

并在测试正文中添加：

@Autowired
private LogWebSocketHandler socketHandler;

private WebSocketContainer container;
private TestWebSocketClient client;

@Before
public void setup() {
    container = ContainerProvider.getWebSocketContainer();
    client = new TestWebSocketClient();
}

@Test
public void createSessionAfterOpenLogWebSocketHandler() throws Exception {
    container.connectToServer(client , URI.create("ws://localhost:8080/path"));
    while( !socketHandler.isOpen()){
        // sometime it is doesn't work, but I dont know solution of this problem
        // wait until socket is open
    }
    Assert.assertTrue( socketHandler.isOpen() );
}

- dzrkot