test : postService 테스트 코드 구현현

Author: cheonHwi

src/services/__test__/test.post.service.test.ts

@@ -0,0 +1,259 @@
+import { PostService } from '@/services/post.service';
+import { PostRepository } from '@/repositories/post.repository';
+import { DBError } from '@/exception';
+
+jest.mock('@/repositories/post.repository');
+
+// 모든 파라미터는 Route 단에서 검증하기 때문에 파라미터를 제대로 받았는지는 확인하지 않음
+describe('PostService', () => {
+  let postService: PostService;
+  let postRepo: jest.Mocked<PostRepository>;
+  let mockPool: any;
+
+  beforeEach(() => {
+    mockPool = {};
+
+    postRepo = new PostRepository(mockPool) as jest.Mocked<PostRepository>;
+    postService = new PostService(postRepo);
+  });
+
+  describe('getAllposts', () => {
+    it('게시물 목록 조회', async () => {
+      const mockPosts = {
+        nextCursor: '2023-11-19T09:19:36.811Z,519212',
+        posts: [
+          {
+            id: '519211',
+            title: 'velog dashboard test post (2)',
+            slug: 'velog-dashboard-test-post-2',
+            daily_view_count: 147,
+            daily_like_count: 2,
+            yesterday_daily_view_count: 147,
+            yesterday_daily_like_count: 2,
+            post_created_at: '2025-02-08T02:58:24.347Z',
+            post_released_at: '2023-11-20T02:15:14.209Z',
+          },
+          {
+            id: '519212',
+            title: 'velog dashboard test post (1)',
+            slug: 'velog-dashboard-test-post-1',
+            daily_view_count: 208,
+            daily_like_count: 1,
+            yesterday_daily_view_count: 208,
+            yesterday_daily_like_count: 1,
+            post_created_at: '2025-02-08T02:58:24.347Z',
+            post_released_at: '2023-11-19T09:19:36.811Z',
+          },
+        ],
+      };
+
+      postRepo.findPostsByUserId.mockResolvedValue(mockPosts);
+
+      const result = await postService.getAllposts(1);
+      console.log(result);
+      expect(result.posts).toEqual([
+        {
+          id: '519211',
+          title: 'velog dashboard test post (2)',
+          slug: 'velog-dashboard-test-post-2',
+          views: 147,
+          likes: 2,
+          yesterdayViews: 147,
+          yesterdayLikes: 2,
+          createdAt: '2025-02-08T02:58:24.347Z',
+          releasedAt: '2023-11-20T02:15:14.209Z',
+        },
+        {
+          id: '519212',
+          title: 'velog dashboard test post (1)',
+          slug: 'velog-dashboard-test-post-1',
+          views: 208,
+          likes: 1,
+          yesterdayViews: 208,
+          yesterdayLikes: 1,
+          createdAt: '2025-02-08T02:58:24.347Z',
+          releasedAt: '2023-11-19T09:19:36.811Z',
+        },
+      ]);
+      expect(result.nextCursor).toBe('2023-11-19T09:19:36.811Z,519212');
+    });
+
+    it('쿼리 중 오류 발생 시 DBError Throw', async () => {
+      const errorMessage = '전체 post 조회 중 문제가 발생했습니다.';
+      postRepo.findPostsByUserId.mockRejectedValue(new DBError(errorMessage));
+
+      await expect(postService.getAllposts(1)).rejects.toThrow(errorMessage);
+    });
+  });
+
+  describe('getAllPostStatistics', () => {
+    it('게시물 전체 통계 조회', async () => {
+      const mockStatistics = {
+        daily_view_count: '355',
+        daily_like_count: '3',
+        yesterday_views: '355',
+        yesterday_likes: '3',
+        last_updated_date: '2025-03-14T15:52:40.767Z',
+      };
+
+      postRepo.getYesterdayAndTodayViewLikeStats.mockResolvedValue(mockStatistics);
+
+      const result = await postService.getAllPostStatistics(1);
+
+      expect(result).toEqual({
+        totalViews: 355,
+        totalLikes: 3,
+        yesterdayViews: 355,
+        yesterdayLikes: 3,
+        lastUpdatedDate: '2025-03-14T15:52:40.767Z',
+      });
+    });
+
+    it('쿼리 중 오류 발생 시 DBError Throw', async () => {
+      const errorMessage = '통계 조회 중 문제가 발생했습니다.';
+      postRepo.getYesterdayAndTodayViewLikeStats.mockRejectedValue(new DBError(errorMessage));
+
+      await expect(postService.getAllPostStatistics(1)).rejects.toThrow(errorMessage);
+    });
+  });
+
+  describe('getTotalPostCounts', () => {
+    it('게시물 개수 조회', async () => {
+      const mockCount = 2;
+      postRepo.getTotalPostCounts.mockResolvedValue(mockCount);
+
+      const result = await postService.getTotalPostCounts(1);
+
+      expect(result).toBe(mockCount);
+    });
+
+    it('쿼리 중 오류 발생 시 DBError Throw', async () => {
+      const errorMessage = '총 게시물 수 조회 중 문제가 발생했습니다.';
+      postRepo.getTotalPostCounts.mockRejectedValue(new DBError(errorMessage));
+
+      await expect(postService.getTotalPostCounts(1)).rejects.toThrow(errorMessage);
+    });
+  });
+
+  describe('getPostByPostId', () => {
+    it('게시물 상세 통계 조회', async () => {
+      const mockPosts = [
+        {
+          date: '2025-03-08T00:00:00.000Z',
+          daily_view_count: 145,
+          daily_like_count: 2,
+        },
+        {
+          date: '2025-03-09T00:00:00.000Z',
+          daily_view_count: 145,
+          daily_like_count: 2,
+        },
+        {
+          date: '2025-03-10T00:00:00.000Z',
+          daily_view_count: 147,
+          daily_like_count: 2,
+        },
+        {
+          date: '2025-03-11T00:00:00.000Z',
+          daily_view_count: 147,
+          daily_like_count: 2,
+        },
+      ];
+
+      postRepo.findPostByPostId.mockResolvedValue(mockPosts);
+
+      const result = await postService.getPostByPostId(1);
+
+      expect(result).toEqual([
+        {
+          date: '2025-03-08T00:00:00.000Z',
+          dailyViewCount: 145,
+          dailyLikeCount: 2,
+        },
+        {
+          date: '2025-03-09T00:00:00.000Z',
+          dailyViewCount: 145,
+          dailyLikeCount: 2,
+        },
+        {
+          date: '2025-03-10T00:00:00.000Z',
+          dailyViewCount: 147,
+          dailyLikeCount: 2,
+        },
+        {
+          date: '2025-03-11T00:00:00.000Z',
+          dailyViewCount: 147,
+          dailyLikeCount: 2,
+        },
+      ]);
+    });
+
+    it('쿼리 중 오류 발생 시 DBError Throw', async () => {
+      const errorMessage = '게시물 조회 중 문제가 발생했습니다.';
+      postRepo.findPostByPostId.mockRejectedValue(new DBError(errorMessage));
+
+      await expect(postService.getPostByPostId(1)).rejects.toThrow(errorMessage);
+    });
+  });
+
+  describe('getPostByPostUUID', () => {
+    it('게시물 상세 통계 조회', async () => {
+      const mockPosts = [
+        {
+          date: '2025-03-08T00:00:00.000Z',
+          daily_view_count: 145,
+          daily_like_count: 2,
+        },
+        {
+          date: '2025-03-09T00:00:00.000Z',
+          daily_view_count: 145,
+          daily_like_count: 2,
+        },
+        {
+          date: '2025-03-10T00:00:00.000Z',
+          daily_view_count: 147,
+          daily_like_count: 2,
+        },
+        {
+          date: '2025-03-11T00:00:00.000Z',
+          daily_view_count: 147,
+          daily_like_count: 2,
+        },
+      ];
+
+      postRepo.findPostByPostUUID.mockResolvedValue(mockPosts);
+
+      const result = await postService.getPostByPostUUID('uuid-1234');
+
+      expect(result).toEqual([
+        {
+          date: '2025-03-08T00:00:00.000Z',
+          dailyViewCount: 145,
+          dailyLikeCount: 2,
+        },
+        {
+          date: '2025-03-09T00:00:00.000Z',
+          dailyViewCount: 145,
+          dailyLikeCount: 2,
+        },
+        {
+          date: '2025-03-10T00:00:00.000Z',
+          dailyViewCount: 147,
+          dailyLikeCount: 2,
+        },
+        {
+          date: '2025-03-11T00:00:00.000Z',
+          dailyViewCount: 147,
+          dailyLikeCount: 2,
+        },
+      ]);
+    });
+
+    it('쿼리 중 오류 발생 시 DBError Throw', async () => {
+      const errorMessage = 'UUID로 게시물 조회 중 문제가 발생했습니다.';
+      postRepo.findPostByPostUUID.mockRejectedValue(new DBError(errorMessage));
+
+      await expect(postService.getPostByPostUUID('uuid-1234')).rejects.toThrow(errorMessage);
+    });
+  });
+});