test: search controller 테스트 코드 추가

backend/server/src/search/search.controller.spec.ts

@@ -1,18 +1,79 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { SearchController } from './search.controller';
+import { SearchService } from './search.service';
+import { PopularKeywordsReqQueryDto } from './dtos/popular-keyword.dto';
+import { Keyword } from '../keyword/keyword.entity';
+
+jest.mock('./search.service');
 
 describe('SearchController', () => {
   let controller: SearchController;
+  let service: SearchService;
 
   beforeEach(async () => {
     const module: TestingModule = await Test.createTestingModule({
       controllers: [SearchController],
+      providers: [SearchService],
     }).compile();
 
     controller = module.get<SearchController>(SearchController);
+    service = module.get<SearchService>(SearchService);
   });
 
   it('should be defined', () => {
     expect(controller).toBeDefined();
   });
+
+  describe('getPopularKeywords()', () => {
+    it('should return {id, description, name}[]', async () => {
+      const dummy_query: PopularKeywordsReqQueryDto = {
+        count: 1,
+      };
+      const expected = [{ id: 0, description: 'test', name: 'test' }];
+
+      jest
+        .spyOn(service, 'getManyPopularKeywords')
+        .mockImplementationOnce(() => {
+          return Promise.resolve<Keyword[]>([
+            {
+              id: 0,
+              name: 'test',
+              createdAt: new Date(),
+              deletedAt: new Date(),
+              updatedAt: new Date(),
+              isActive: true,
+              description: 'test',
+            },
+          ]);
+        });
+
+      const result = await controller.getPopularKeywords(dummy_query);
+      expect(service.getManyPopularKeywords).toBeCalled();
+      expect(result).toEqual(expected);
+    });
+  });
+
+  describe('getKeywordWithTopComments()', () => {
+    it('should call service.getKeywordWithTopCommentsForEmotion', async () => {
+      const dummy_input = {
+        name: 'test',
+        from: '0000-00-00',
+        to: '0000-00-00',
+      };
+
+      await controller.getKeywordWithTopComments(dummy_input);
+
+      expect(service.getKeywordWithTopCommentsForEmotion).toBeCalled();
+    });
+  });
+
+  describe('getKeywordWithTopComments()', () => {
+    it('should call service.getCommentWithSentences', async () => {
+      const dummy_id = 0;
+
+      await controller.getCommentWithSentences(dummy_id);
+
+      expect(service.getCommentWithSentences).toBeCalled();
+    });
+  });
 });