How to implement integration test for Spring Websocket?

Question

Java

I want to make an integration test for websocket: connect to the server-> subscribe to the mailing list-> send a message-> enter the message into the database-> get a response.
The controller has a method that receives a message and sends it to the client:

@MessageMapping("/section/add")
    @SendTo("/section/add")
    public Message addSection(EntitySection section){
        sectionService.addSection(section);

        return MessageBuilder
                .withPayload("")
                .setHeader(HEADER_STATUS,STATUS_OK)
                .build();
    }

The annotation @MessageMapping("/section/add")is responsible for calling the method when a message is received.
The annotation @SendTo("/section/add")sends a response to the client.
When a message is received, it is entered into the database.
When unit testing, everything works correctly, I pass an object as a parameter and go to the database, but here's how to make a call not through a method, but through annotations to check the real functionality without starting the server?