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How to Test Spring MVC Controllers?

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Deepika Sahu answered on December 17, 2022 Popularity 8/10 Helpfulness 2/10

answer How to Test Spring MVC Controllers?

related Spring Boot Controller Tests

related test controller spring boot

How to Test Spring MVC Controllers?

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SpringBoot provides @WebMvcTest annotation to test Spring MVC Controllers. A
Also, the @WebMvcTest annotation-based test runs faster because it will load only the specified controller and its dependencies only without loading the entire application.

Popularity 8/10 Helpfulness 2/10 Language whatever

Source: Grepper

Tags: spring-mvc whatever

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Contributed on Dec 17 2022

Deepika Sahu

0 Answers Avg Quality 2/10

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Spring Boot Controller Tests

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@ExtendWith(MockitoExtension.class)
public class SuperHeroControllerMockMvcStandaloneTest {

    private MockMvc mvc;

    @Mock
    private SuperHeroRepository superHeroRepository;

    @InjectMocks
    private SuperHeroController superHeroController;

    // This object will be magically initialized by the initFields method below.
    private JacksonTester<SuperHero> jsonSuperHero;

    @BeforeEach
    public void setup() {
        // We would need this line if we would not use the MockitoExtension
        // MockitoAnnotations.initMocks(this);
        // Here we can't use @AutoConfigureJsonTesters because there isn't a Spring context
        JacksonTester.initFields(this, new ObjectMapper());
        // MockMvc standalone approach
        mvc = MockMvcBuilders.standaloneSetup(superHeroController)
                .setControllerAdvice(new SuperHeroExceptionHandler())
                .addFilters(new SuperHeroFilter())
                .build();
    }

    @Test
    public void canRetrieveByIdWhenExists() throws Exception {
        // given
        given(superHeroRepository.getSuperHero(2))
                .willReturn(new SuperHero("Rob", "Mannon", "RobotMan"));

        // when
        MockHttpServletResponse response = mvc.perform(
                get("/superheroes/2")
                        .accept(MediaType.APPLICATION_JSON))
                .andReturn().getResponse();

        // then
        assertThat(response.getStatus()).isEqualTo(HttpStatus.OK.value());
        assertThat(response.getContentAsString()).isEqualTo(
                jsonSuperHero.write(new SuperHero("Rob", "Mannon", "RobotMan")).getJson()
        );
    }

    @Test
    public void canRetrieveByIdWhenDoesNotExist() throws Exception {
        // given
        given(superHeroRepository.getSuperHero(2))
                .willThrow(new NonExistingHeroException());

        // when
        MockHttpServletResponse response = mvc.perform(
                get("/superheroes/2")
                        .accept(MediaType.APPLICATION_JSON))
                .andReturn().getResponse();

        // then
        assertThat(response.getStatus()).isEqualTo(HttpStatus.NOT_FOUND.value());
        assertThat(response.getContentAsString()).isEmpty();
    }

    @Test
    public void canRetrieveByNameWhenExists() throws Exception {
        // given
        given(superHeroRepository.getSuperHero("RobotMan"))
                .willReturn(Optional.of(new SuperHero("Rob", "Mannon", "RobotMan")));

        // when
        MockHttpServletResponse response = mvc.perform(
                get("/superheroes/?name=RobotMan")
                        .accept(MediaType.APPLICATION_JSON))
                .andReturn().getResponse();

        // then
        assertThat(response.getStatus()).isEqualTo(HttpStatus.OK.value());
        assertThat(response.getContentAsString()).isEqualTo(
                jsonSuperHero.write(new SuperHero("Rob", "Mannon", "RobotMan")).getJson()
        );
    }

    @Test
    public void canRetrieveByNameWhenDoesNotExist() throws Exception {
        // given
        given(superHeroRepository.getSuperHero("RobotMan"))
                .willReturn(Optional.empty());

        // when
        MockHttpServletResponse response = mvc.perform(
                get("/superheroes/?name=RobotMan")
                        .accept(MediaType.APPLICATION_JSON))
                .andReturn().getResponse();

        // then
        assertThat(response.getStatus()).isEqualTo(HttpStatus.OK.value());
        assertThat(response.getContentAsString()).isEqualTo("null");
    }

    @Test
    public void canCreateANewSuperHero() throws Exception {
        // when
        MockHttpServletResponse response = mvc.perform(
                post("/superheroes/").contentType(MediaType.APPLICATION_JSON).content(
                        jsonSuperHero.write(new SuperHero("Rob", "Mannon", "RobotMan")).getJson()
                )).andReturn().getResponse();

        // then
        assertThat(response.getStatus()).isEqualTo(HttpStatus.CREATED.value());
    }

    @Test
    public void headerIsPresent() throws Exception {
        // when
        MockHttpServletResponse response = mvc.perform(
                get("/superheroes/2")
                        .accept(MediaType.APPLICATION_JSON))
                .andReturn().getResponse();

        // then
        assertThat(response.getStatus()).isEqualTo(HttpStatus.OK.value());
        assertThat(response.getHeaders("X-SUPERHERO-APP")).containsOnly("super-header");
    }
}

Popularity 9/10 Helpfulness 4/10 Language java

Source: thepracticaldeveloper.com

Tags: controller-tests cont

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Contributed on Dec 17 2022

Deepika Sahu

0 Answers Avg Quality 2/10

test controller spring boot

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// UserController.java (Controller)
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/users")
public class UserController {

    @GetMapping("/hello")
    public String hello() {
        return "Hello, world!";
    }
}

Popularity 7/10 Helpfulness 1/10 Language java

Source: Grepper

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Contributed on Sep 12 2023

YOU.com

0 Answers Avg Quality 2/10

How to Test Spring MVC Controllers?

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