Spring boot 1.4 - REST API Testing

Question

i wanted to write Test for my Spring mvc REST Controller. I am following official documentation from https://spring.io/blog/2016/04/15/testing-improvements-in-spring-boot-1-4 and so just updated version to 1.4 and added spring boot as doc suggests.

I have added following dependencies :

 <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
</dependency> 

and the parent

 <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.2.RELEASE</version>
  </parent>

My LoginController API which i want to test looks like this :

@RequestMapping(value = { "/login" }, method = RequestMethod.GET)
    public @ResponseBody ResponseEntity<HashMap<String, Object>> login() {


          // some logic to get Customer
        return new ResponseEntity<>(customer, HttpStatus.OK);

    }

And as per documentation here is my Test :

@RunWith(SpringRunner.class)
@WebMvcTest(LoginController.class)
@SpringBootTest
public class AuthorizationAndAuthenticationTest extends WebSecurityConfigurerAdapter {

    @Autowired
    private WebApplicationContext webApplicationContext;
    private LoginController loginController;
    @Autowired
    private TestRestTemplate restTemplate;

    @MockBean
    private LoggingService loggingService;

    @Test
    public void test() {
        given(this.loggingService.logInfoMessage("some Dummy Message", this.getClass())).
        this.restTemplate.getForObject("/login", Object.class);
    }
}

Problems : 1. Since login Controller is using many Services, i wanted to Mock them using "given" but it gives compilation problem, seems like i am missing some dependency though not sure. 2.TestRestTemplate is deprecated and what is the alternative ? i did not find any alternative.

This is first time i will be writing Tests using Spring framework so it is possible i am overlooking some minute details.

Please help me with this.

Answer 1

Concerning problem #1: You are probably forgot to call .withReturn while trying to stub logInfoMessage:

given(this.loggingService.logInfoMessage("some Dummy Message", this.getClass()))
   .willReturn("your desired value")

Concerning problem #2: org.springframework.boot.test.TestRestTemplate is deprecated in favor of org.springframework.boot.test.web.client.TestRestTemplate.

So just change the package.

BTW, most suitable construct for testing Spring MVC endpoints is MockMvc not TestRestTemplate.