Spring boot 통합 Test

@SpringBootTest 

    > @SpringBootApplication을 찾아가서 모든 BeanScan진행 

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.MOCK)

 * junit4 기준 @RunWith와 같이 사용해야함

참고 : https://developing-countries.tistory.com/50?category=1023056 

org.junit.runners.model.InvalidTestClassError

 

사용예제  

1. WebEnvironment.MOCK : Servlet Container를 mocking해서 뜸 (내장 톰켓 미 사용)
  > Dispatcher servlet에 요청을 보내는 것 을 테스트 할 수 있음

 

 * 이때 mocking된 servlet과 interactional 하기 위해 MockMVC사용

 

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.MOCK)
@AutoConfigureMockMvc
class SampleControllerTest {

    @Autowired
    MockMvc mockMvc;

    @Test
    public void hello() throws Exception {
        mockMvc.perform(get("/hello"))
                .andExpect(status().isOk())
                .andExpect(content().string("hello sangguk"))
                .andDo(print());
    }
}

 

2. WebEnvironment.RANDOM_PORT or DEFINE_PORT : 실제 test용 내장 Servlet이 뜸 (내장 톰켓 사용)

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class SampleControllerTest {

    @Autowired
    TestRestTemplate testRestTemplate;

    @Test
    public void hello() throws Exception {
        String result = testRestTemplate.getForObject("/hello", String.class);
        assertThat(result).isEqualTo("hello sangguk");
    }
}

* WebTestClient : asynchronous하게(비 동기) 동작함 > 웹클라이언트처럼 테스트 할 수 있음

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class SampleControllerTest {

    @Autowired
    WebTestClient webTestClient;

    @MockBean
    SampleService mockSampleService;

    @Test
    public void hello() throws Exception {
        when(mockSampleService.getName()).thenReturn("SANG_GUK");

        webTestClient.get().uri("/hello").exchange()
                        .expectStatus().isOk()
                        .expectBody(String.class).isEqualTo("hello SANG_GUK");
    }
}

 

3. Controller만 정상 작동하는지 테스트 하고 싶은 경우

 > @MockBean을 사용하여 service를 mocking함

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class SampleControllerTest {

    @Autowired
    TestRestTemplate testRestTemplate;

    @MockBean
    SampleService mockSampleService;

    @Test
    public void hello() throws Exception {
        when(mockSampleService.getName()).thenReturn("SANG_GUK");

        String result = testRestTemplate.getForObject("/hello", String.class);
        assertThat(result).isEqualTo("hello SANG_GUK");
    }
}