spyOn() 로직 문제

describe('getBoardsByAuthor', () => {  

    it('should return same GetBoardResponseDto from blogService', async () => {  
      // blogService에서 반환하는 값을 제대로 사용하는지 알기 위해서 스파이 심어둠  

      // const blogServiceAuthorSpy = jest.spyOn(blogService, 'getBoardsByAuthor');  
      const input = 'test';  
      const expectedServiceReturnValue = [  
        {  
          id: 'uuid',  
          dated_at: new Date(),  
          title: '1',  
          description: '1',  
          body: '1',  
          author: 'test',  
        },  
        {  
          id: 'uuid',  
          dated_at: new Date(),  
          title: '2',  
          description: '2',  
          body: '2',  
          author: 'test',  
        },  
      ];  
      const blogServiceSpy = jest  
        .spyOn(blogService, 'getBoardsByAuthor')  
        .mockResolvedValueOnce(expectedServiceReturnValue);  

      const result = await blogController.getBoardByAuthor(input);  

      expect(blogServiceSpy).toHaveBeenCalledWith(input);  
      expect(result).toEqual(expectedServiceReturnValue);  
    });  
  });