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[Test]: 댓글 목록 조회 테스트 구현
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‎back/src/main/java/com/back/domain/comment/service/CommentService.java‎

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@@ -43,6 +43,8 @@ public CommentResponse createComment(Long userId, Long postId, CommentRequest re
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}
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public Page<CommentResponse> getComments(Long userId, Long postId, Pageable pageable) {
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Post post = postRepository.findById(postId)
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.orElseThrow(() -> new ApiException(ErrorCode.POST_NOT_FOUND));
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Page<Comment> commentsPage = commentRepository.findCommentsByPostId(postId, pageable);
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return commentsPage.map(CommentMappers.COMMENT_READ::map);
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}

‎back/src/test/java/com/back/domain/comment/controller/CommentControllerTest.java‎

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@@ -1,6 +1,7 @@
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package com.back.domain.comment.controller;
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import com.back.domain.comment.dto.CommentRequest;
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import com.back.domain.comment.entity.Comment;
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import com.back.domain.comment.repository.CommentRepository;
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import com.back.domain.post.entity.Post;
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import com.back.domain.post.repository.PostRepository;
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import org.springframework.test.context.ActiveProfiles;
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import org.springframework.test.web.servlet.MockMvc;
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import org.springframework.transaction.annotation.Transactional;
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import org.springframework.util.ReflectionUtils;
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import java.lang.reflect.Field;
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import java.time.LocalDateTime;
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import java.util.UUID;
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import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
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import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
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import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
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import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
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.andDo(print());
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}
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}
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@Nested
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@DisplayName("댓글 목록 조회")
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class GetComments {
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@Test
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@DisplayName("성공 - 기본 파라미터로 댓글 목록 조회")
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void success() throws Exception {
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// Given - 테스트 댓글들 생성
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createTestComments();
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// When & Then
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mockMvc.perform(get("/api/v1/posts/{postId}/comments", testPost.getId())
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.param("userId", String.valueOf(testUser.getId()))
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.contentType(MediaType.APPLICATION_JSON))
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.andExpect(status().isOk())
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.andExpect(jsonPath("$.message").value("성공적으로 조회되었습니다."))
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.andExpect(jsonPath("$.data.items").isArray())
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.andExpect(jsonPath("$.data.items.length()").value(3))
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.andExpect(jsonPath("$.data.totalElements").value(3))
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.andExpect(jsonPath("$.data.totalPages").value(1))
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.andDo(print());
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}
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@Test
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@DisplayName("성공 - LATEST 정렬로 댓글 목록 조회")
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void successWithLatestSort() throws Exception {
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// Given
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createTestCommentsWithDifferentTimes();
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// When & Then
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mockMvc.perform(get("/api/v1/posts/{postId}/comments", testPost.getId())
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.param("userId", String.valueOf(testUser.getId()))
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.param("sortType", "LATEST")
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.contentType(MediaType.APPLICATION_JSON))
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.andExpect(status().isOk())
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.andExpect(jsonPath("$.data.items[0].content").value("가장 최근 댓글"))
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.andExpect(jsonPath("$.data.items[1].content").value("중간 댓글"))
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.andExpect(jsonPath("$.data.items[2].content").value("오래된 댓글"))
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.andDo(print());
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}
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@Test
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@DisplayName("성공 - LIKES 정렬로 댓글 목록 조회")
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void successWithLikesSort() throws Exception {
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// Given
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createTestCommentsWithDifferentLikes();
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// When & Then
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mockMvc.perform(get("/api/v1/posts/{postId}/comments", testPost.getId())
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.param("userId", String.valueOf(testUser.getId()))
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.param("sortType", "LIKES")
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.contentType(MediaType.APPLICATION_JSON))
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.andExpect(status().isOk())
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.andExpect(jsonPath("$.data.items[0].likeCount").value(10))
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.andExpect(jsonPath("$.data.items[1].likeCount").value(5))
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.andExpect(jsonPath("$.data.items[2].likeCount").value(2))
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.andDo(print());
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}
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@Test
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@DisplayName("성공 - 빈 댓글 목록 조회")
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void successWithEmptyComments() throws Exception {
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// When & Then
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mockMvc.perform(get("/api/v1/posts/{postId}/comments", testPost.getId())
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.param("userId", String.valueOf(testUser.getId()))
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.contentType(MediaType.APPLICATION_JSON))
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.andExpect(status().isOk())
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.andExpect(jsonPath("$.data.items").isArray())
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.andExpect(jsonPath("$.data.items.length()").value(0))
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.andExpect(jsonPath("$.data.totalElements").value(0))
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.andExpect(jsonPath("$.data.totalPages").value(0))
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.andDo(print());
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}
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@Test
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@DisplayName("실패 - 존재하지 않는 게시글 ID")
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void failWithNonExistentPostId() throws Exception {
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// When & Then
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mockMvc.perform(get("/api/v1/posts/{postId}/comments", 999L)
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.param("userId", String.valueOf(testUser.getId()))
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.contentType(MediaType.APPLICATION_JSON))
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.andExpect(status().isNotFound())
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.andDo(print());
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}
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}
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private void createTestComments() {
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for (int i = 1; i <= 3; i++) {
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Comment comment = Comment.builder()
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.content("테스트 댓글 " + i)
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.post(testPost)
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.user(testUser)
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.hide(false)
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.build();
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commentRepository.save(comment);
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}
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}
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private void createTestCommentsWithDifferentTimes() {
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// 오래된 댓글
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Comment oldComment = Comment.builder()
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.content("오래된 댓글")
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.post(testPost)
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.user(testUser)
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.hide(false)
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.build();
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Field createdDateOldField = ReflectionUtils.findField(oldComment.getClass(), "createdDate");
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ReflectionUtils.makeAccessible(createdDateOldField);
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ReflectionUtils.setField(createdDateOldField, oldComment, LocalDateTime.now().minusDays(1));
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commentRepository.save(oldComment);
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// 중간 댓글
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Comment middleComment = Comment.builder()
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.content("중간 댓글")
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.post(testPost)
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.user(testUser)
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.hide(false)
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.build();
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Field createdDateField = ReflectionUtils.findField(middleComment.getClass(), "createdDate");
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ReflectionUtils.makeAccessible(createdDateField);
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ReflectionUtils.setField(createdDateField, middleComment, LocalDateTime.now().minusDays(1));
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commentRepository.save(middleComment);
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// 최근 댓글
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Comment recentComment = Comment.builder()
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.content("가장 최근 댓글")
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.post(testPost)
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.user(testUser)
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.hide(false)
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.build();
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commentRepository.save(recentComment);
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}
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private void createTestCommentsWithDifferentLikes() {
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Comment comment1 = Comment.builder()
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.content("좋아요 2개")
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.post(testPost)
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.user(testUser)
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.hide(false)
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.likeCount(2)
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.build();
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commentRepository.save(comment1);
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Comment comment2 = Comment.builder()
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.content("좋아요 5개")
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.post(testPost)
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.user(testUser)
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.hide(false)
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.likeCount(5)
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.build();
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commentRepository.save(comment2);
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Comment comment3 = Comment.builder()
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.content("좋아요 10개")
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.post(testPost)
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.user(testUser)
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.hide(false)
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.likeCount(10)
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.build();
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commentRepository.save(comment3);
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}
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private void createManyTestComments(int count) {
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for (int i = 1; i <= count; i++) {
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Comment comment = Comment.builder()
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.content("댓글 " + i)
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.post(testPost)
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.user(testUser)
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.hide(false)
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.build();
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commentRepository.save(comment);
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}
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}
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}

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