Test websocket in spring boot application

I don't understand how properly write a test case for websocket in springboot application. I have a class that implement WebSocketHandler and I add this handler in WebSocketConfigurer:

@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();
}
}

But when I write this below test case I get an exception:

@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"));
}
}

exception: javax.websocket.DeploymentException: The HTTP request to initiate the WebSocket connection failed

I read that if I set "ws://127.0.0.1:8080/test/" (slash on end) it was work , but it doesn't work.... What I do wrong?