我如何将 JUnit 测试写入我的 Spring-MVC 控制器类？

Question

我想为我的UserController班级编写一个 JUnit 测试（Java 单元），但我不知道该怎么做。

用户控制器：

@RestController

@RequestMapping(CompositeController.ENTRY)

public class UserController {

protected final static String ENTRY = "/demo/v1/composite";

private UserService userService;

@Autowired

public UserController(UserService userService) {

    this.userService = userService;

}

 @GetMapping(path = "/isadmin")

 public ResponseEntity<Boolean> checkadmin(@RequestHeader String nickname){

 return userService.checkifadmin(nickname);

 }

用户服务：

import org.springframework.http.ResponseEntity;

import org.springframework.stereotype.Service;

@Service

public interface UserService {

ResponseEntity<Boolean> checkifadmin(String nickname);

}

UserServiceImpl:

public class UserServiceImpl implements UserService {

 private final String userBaseAdress = "http://localhost:7777";

 private final String userBasePath = "/demo/v1/user";

 public ResponseEntity<Boolean> checkifadmin(String nickname) {          

        HttpHeaders headers = new HttpHeaders();            

        headers.setContentType(MediaType.APPLICATION_JSON);

        headers.set("nickname", nickname);       

        HttpEntity<String> entity = new HttpEntity<String>(headers);             

        RestTemplate restTemplate = new RestTemplate();          

        ResponseEntity<Boolean> response = restTemplate.exchange(userBaseAdress + userBasePath + "/isadmin",

                HttpMethod.GET, entity, Boolean.class);         

        return response;

    }

}