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트러블 슈팅

23.10.25 항해 99 16기 실전 프로젝트 트러블 슈팅

김용글 2023. 10. 25. 14:44

CommentsController 의 테스트 코드를 작성하던 도중 트러블 슈팅이 발생했다

 

 1) 첫번재 코드

더보기

 (1) MockSpringSecurityFilter

// Spring Securitiy 필터
public class MockSpringSecurityFilter implements Filter {

    @Override
    // 필터의 초기화
    public void init(FilterConfig filterConfig) {}

    @Override
    // doFilter 는 HTTP 요청과 응답을 가로채고 처리함
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        // 인증 객체를 담고 있음
        SecurityContextHolder.getContext()
                .setAuthentication((Authentication) ((HttpServletRequest) req).getUserPrincipal());
        chain.doFilter(req, res);
    }

    @Override
    // 필터 종료시 정리작업 보안컨넥스트를 클리어하고 메모리 누수 방지
    public void destroy() {
        SecurityContextHolder.clearContext();
    }
}

 

 (2) CommentsControllerTest

     CommentsRequestDto 에서 contents 를 가지고오기위해 

     CommentsRequestDto 에다가 @AllArgsConstructor 를 넣어주었다

     해당 어노테이션은 모든 필드 값을 파라미터로 받는 생성자를 만드는 것이다   

@WebMvcTest (
        controllers = {CommentsController.class},
        // 제외 할 것 지정
        excludeFilters = {
                @ComponentScan.Filter(
                        type = FilterType.ASSIGNABLE_TYPE,
                        classes = WebSecurityConfig.class
                )
        }
)

class CommentsControllerTest {
    private MockMvc mvc;

    private Principal principal;

    @Autowired
    private WebApplicationContext context;

    @Autowired
    private ObjectMapper objectMapper;

    @MockBean
    CommentsService commentsService;

    @MockBean
    CommentsController commentsController;

    @BeforeEach
    public void setup() {
        mockUserSetup();
        mvc = MockMvcBuilders.webAppContextSetup(context)
                .addFilter(new MockSpringSecurityFilter())
                .apply(springSecurity()) // 우리가 만든 필터 넣기
                .build();
    }

    // 테스트할 USER 객체
    private void mockUserSetup() {
        // Mock 테스트 유저 생성
        UserDetails userDetails = User.withUsername("rkawk@gmail.com")
                .password("kim881012!!!")
                .roles("USER") // 롤에 대한 설정
                .build();
        principal = new UsernamePasswordAuthenticationToken(userDetails, userDetails.getPassword(), userDetails.getAuthorities());
    }

    @Test
    @DisplayName("댓글 생성")
    public void commentsCreateTest () throws Exception {
        // Given
        Long postId =1L;
        String contents ="댓글";
        CommentsRequestDto requestDto = new CommentsRequestDto(contents);

        // eq : 특정한 값을 기대하는 경우에 사용됨
        // any : 어떤 값이든 허용하는 경우에 사용됨
        when(commentsController.commentsCreate(eq(postId), any(CommentsRequestDto.class), any(UserDetailsImpl.class)))
                .thenReturn(new ResponseEntity<>(new MessageResponseDto("댓글이 생성되었습니다.", 200), HttpStatus.OK));

        // Wen and Then
        mvc.perform(MockMvcRequestBuilders.post("/api/posts/"+postId+"/comments")
                        .contentType(MediaType.APPLICATION_JSON)
                        .content(objectMapper.writeValueAsString(requestDto))
                        .with(csrf()) // CSRF 토큰을 요청에 포함
                        .principal(principal)) // 가짜 사용자 principal 설정
                        .andExpect(status().isOk());

        verify(commentsController, times(1)).commentsCreate(eq(postId), any(CommentsRequestDto.class), any(UserDetailsImpl.class));
    }
}

 

 (3) 결과    

Status
필요:200
실제   :401
<클릭하여 차이점 확인>

java.lang.AssertionError: Status expected:<200> but was:<401>
	at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:59)
	at org.springframework.test.util.AssertionErrors.assertEquals(AssertionErrors.java:122)
	at org.springframework.test.web.servlet.result.StatusResultMatchers.lambda$matcher$9(StatusResultMatchers.java:637)
	at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:214)
	at com.sparta.team2project.comments.CommentsControllerTest.commentsCreateTest(CommentsControllerTest.java:111)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727)
	at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
	at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156)
	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147)
	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:217)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:213)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:138)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:68)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)
	at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:110)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:90)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:85)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
	at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)

 

1. 발생

    보이는 것 처럼 401 에러가 나왔다.

 

2. 원인

    찾아보니 요청된 리소스에 대한 유효한 인증 자격 증명이 없기 때문에 클라이언트 요청이 완료되지 않아 생긴다고한다

 

3.  해결

     MockSpringSecurityFilter 대신 @WithMockUser 어노테이션을 사용했다

    @WithMockUser : Spring Security 에 설정한 인증정보를 제공해준다

                                  사용자 인증 정보를 담은 Authentication 을 UsernamePasswordAuthenticationToken 으로 넣어주고

                                   Principal 은 User 객체에 넣어 SecurityContext 에 보관해 준다

 

 2) 두번째 코드

더보기

 (1) CommentsControllerTest

@WebMvcTest (
        controllers = {CommentsController.class},
        // 제외 할 것 지정
        excludeFilters = {
                @ComponentScan.Filter(
                        type = FilterType.ASSIGNABLE_TYPE,
                        classes = WebSecurityConfig.class
                )
        }
)

class CommentsControllerTest {
    // 필요한 의존 객체의 타입에 해당하는 빈을 찾아 주입
    @Autowired
    private MockMvc mvc;

    private Principal principal;

    @Autowired
    private ObjectMapper objectMapper;

    @MockBean
    CommentsController commentsController;


    // 테스트할 USER 객체
    private void mockUserSetup() {
        // Mock 테스트 유저 생성
        UserDetails userDetails = User.withUsername("rkawk@gmail.com")
                .password("kim881012!!!")
                .roles("USER") // 롤에 대한 설정
                .build();
        principal = new UsernamePasswordAuthenticationToken(userDetails, userDetails.getPassword(), userDetails.getAuthorities());
    }

    @WithMockUser
    @Test
    @DisplayName("댓글 생성")
    public void commentsCreateTest () throws Exception {
        mockUserSetup();
        // Given
        Long postId =1L;
        String contents ="댓글";
        CommentsRequestDto requestDto = new CommentsRequestDto(contents);

        // eq : 특정한 값을 기대하는 경우에 사용됨
        // any : 어떤 값이든 허용하는 경우에 사용됨
        when(commentsController.commentsCreate(eq(postId), any(CommentsRequestDto.class), any(UserDetailsImpl.class)))
                .thenReturn(new ResponseEntity<>(new MessageResponseDto("댓글이 생성되었습니다.", 200), HttpStatus.OK));

        // Wen and Then
        mvc.perform(MockMvcRequestBuilders.post("/api/posts/"+postId+"/comments")
                        .contentType(MediaType.APPLICATION_JSON)
                        .content(objectMapper.writeValueAsString(requestDto))
                        .with(csrf()) // CSRF 토큰을 요청에 포함
                        .principal(principal)) // 가짜 사용자 principal 설정
                        .andExpect(status().isOk());
    }
}

 

 (2) 결과

MockHttpServletRequest:
      HTTP Method = POST
      Request URI = /api/posts/1/comments
       Parameters = {_csrf=[tATwhahW598F8Qyun9YZIP0rUyoHy4MdWhFRrVt0_qRLQqVQhWbEvMtl0e8ol2_L_fstFJ5Jfks0-LcwOyhgzGtAmsZzc8dl]}
          Headers = [Content-Type:"application/json;charset=UTF-8", Content-Length:"21"]
             Body = {"contents":"댓글"}
    Session Attrs = {SPRING_SECURITY_CONTEXT=SecurityContextImpl [Authentication=UsernamePasswordAuthenticationToken [Principal=org.springframework.security.core.userdetails.User [Username=user, Password=[PROTECTED], Enabled=true, AccountNonExpired=true, credentialsNonExpired=true, AccountNonLocked=true, Granted Authorities=[ROLE_USER]], Credentials=[PROTECTED], Authenticated=true, Details=null, Granted Authorities=[ROLE_USER]]]}

Handler:
             Type = com.sparta.team2project.comments.controller.CommentsController
           Method = com.sparta.team2project.comments.controller.CommentsController#commentsCreate(Long, CommentsRequestDto, UserDetailsImpl)

Async:
    Async started = false
     Async result = null

Resolved Exception:
             Type = org.springframework.http.converter.HttpMessageNotReadableException

ModelAndView:
        View name = null
             View = null
            Model = null

FlashMap:
       Attributes = null

MockHttpServletResponse:
           Status = 400
    Error message = null
          Headers = [Content-Type:"application/problem+json", X-Content-Type-Options:"nosniff", X-XSS-Protection:"0", Cache-Control:"no-cache, no-store, max-age=0, must-revalidate", Pragma:"no-cache", Expires:"0", X-Frame-Options:"DENY"]
     Content type = application/problem+json
             Body = {"type":"about:blank","title":"Bad Request","status":400,"detail":"Failed to read request","instance":"/api/posts/1/comments"}
    Forwarded URL = null
   Redirected URL = null
          Cookies = []

Status
필요:200
실제   :400
<클릭하여 차이점 확인>

java.lang.AssertionError: Status expected:<200> but was:<400>
at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:59)
at org.springframework.test.util.AssertionErrors.assertEquals(AssertionErrors.java:122)
at org.springframework.test.web.servlet.result.StatusResultMatchers.lambda$matcher$9(StatusResultMatchers.java:637)
at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:214)
at com.sparta.team2project.comments.CommentsControllerTest.commentsCreateTest(CommentsControllerTest.java:90)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.junit.platforhttp://m.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727)
at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86)
at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103)
at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92)
at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:217)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:213)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:138)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:68)
at org.junit.platforhttp://m.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platforhttp://m.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at org.junit.platforhttp://m.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platforhttp://m.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at org.junit.platforhttp://m.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platforhttp://m.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at org.junit.platforhttp://m.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platforhttp://m.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at org.junit.platforhttp://m.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platforhttp://m.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at org.junit.platforhttp://m.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platforhttp://m.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at org.junit.platforhttp://m.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
at org.junit.platforhttp://m.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
at org.junit.platforhttp://m.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
at org.junit.platforhttp://m.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
at org.junit.platforhttp://m.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
at org.junit.platforhttp://m.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
at org.junit.platforhttp://m.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
at org.junit.platforhttp://m.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)
at org.junit.platforhttp://m.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)
at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:110)
at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:90)
at org.gradle.api.internal.tasks.testing.junitplatforhttp://m.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:85)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65)
at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)

 

 

1. 발생

    이번에는 400 에러가 발생했다

 

2. 원인

Resolved Exception:
             Type = org.springframework.http.converter.HttpMessageNotReadableException 은

    API 호출 시 요청 본문을 파싱할 때 문제가 발생해서 생기는 예외

 

3. 해결

    역직렬화는 다음과 같은 과정을 거쳐서 처리됨

    1. 기본 생성자로 객체를 생성함

    2. 필드값을 찾아서 값을 바인딩

 

   따라서, 가장 먼저 객체를 생성하는데 기본 생성자가 없다면 에러를 발생시킨다

    CommentsRequestDto 에다가 @NoArgsConstructor 를 추가해서 해결하였다

    @AllArgsConstructor : 전체 변수를 생성하는 생성자를 만들어줌

    @NoArgsConstructor : 기본 생성자 생성

 

4. 최종 코드

더보기

 1) CommentsControllerTest

@WebMvcTest (
        controllers = {CommentsController.class},
        // 제외 할 것 지정
        excludeFilters = {
                @ComponentScan.Filter(
                        type = FilterType.ASSIGNABLE_TYPE,
                        classes = WebSecurityConfig.class
                )
        }
)

class CommentsControllerTest {
    // 필요한 의존 객체의 타입에 해당하는 빈을 찾아 주입
    @Autowired
    private MockMvc mvc;

    private Principal principal;

    @Autowired
    private ObjectMapper objectMapper;

    @MockBean
    CommentsController commentsController;


    // 테스트할 USER 객체
    private void mockUserSetup() {
        // Mock 테스트 유저 생성
        UserDetails userDetails = User.withUsername("rkawk@gmail.com")
                .password("kim881012!!!")
                .roles("USER") // 롤에 대한 설정
                .build();
        principal = new UsernamePasswordAuthenticationToken(userDetails, userDetails.getPassword(), userDetails.getAuthorities());
    }

    @WithMockUser
    @Test
    @DisplayName("댓글 생성")
    public void commentsCreateTest() throws Exception {
        mockUserSetup();
        // Given
        Long postId = 1L;
        String contents = "댓글";
        CommentsRequestDto requestDto = new CommentsRequestDto(contents);

        // eq : 특정한 값을 기대하는 경우에 사용됨
        // any : 어떤 값이든 허용하는 경우에 사용됨
        when(commentsController.commentsCreate(eq(postId), any(CommentsRequestDto.class), any(UserDetailsImpl.class)))
                .thenReturn(new ResponseEntity<>(new MessageResponseDto("댓글이 생성되었습니다.", 200), HttpStatus.OK));

        // Wen and Then
        mvc.perform(MockMvcRequestBuilders.post("/api/posts/"+postId+"/comments")
                        .contentType(MediaType.APPLICATION_JSON)
                        .content(objectMapper.writeValueAsString(requestDto))
                        .with(csrf()) // CSRF 토큰을 요청에 포함
                        .principal(principal)) // 가짜 사용자 principal 설정
                        .andExpect(status().isOk())
                        .andDo(print());
    }
}

 

 2) Dto

@Getter
@AllArgsConstructor // test 에 사용
@NoArgsConstructor // test 에 사용
public class CommentsRequestDto {
    private String contents;
}

 

5. 결과

MockHttpServletRequest:
      HTTP Method = POST
      Request URI = /api/posts/1/comments
       Parameters = {_csrf=[l_8PH40cUQalBhmI28162HlYpaR6bZnYFJv_gA0-SjY587mY88s5fOstYTaIMyGx6OBO708-iMZNWfj1I_6c4jsJeQJcx435]}
          Headers = [Content-Type:"application/json;charset=UTF-8", Content-Length:"21"]
             Body = {"contents":"댓글"}
    Session Attrs = {SPRING_SECURITY_CONTEXT=SecurityContextImpl [Authentication=UsernamePasswordAuthenticationToken [Principal=org.springframework.security.core.userdetails.User [Username=user, Password=[PROTECTED], Enabled=true, AccountNonExpired=true, credentialsNonExpired=true, AccountNonLocked=true, Granted Authorities=[ROLE_USER]], Credentials=[PROTECTED], Authenticated=true, Details=null, Granted Authorities=[ROLE_USER]]]}

Handler:
             Type = com.sparta.team2project.comments.controller.CommentsController
           Method = com.sparta.team2project.comments.controller.CommentsController#commentsCreate(Long, CommentsRequestDto, UserDetailsImpl)

Async:
    Async started = false
     Async result = null

Resolved Exception:
             Type = null

ModelAndView:
        View name = null
             View = null
            Model = null

FlashMap:
       Attributes = null

MockHttpServletResponse:
           Status = 200
    Error message = null
          Headers = [X-Content-Type-Options:"nosniff", X-XSS-Protection:"0", Cache-Control:"no-cache, no-store, max-age=0, must-revalidate", Pragma:"no-cache", Expires:"0", X-Frame-Options:"DENY"]
     Content type = null
             Body = 
    Forwarded URL = null
   Redirected URL = null
          Cookies = []

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