public ReviewGroupResponse getReviewGroupSummary(String reviewRequestCode) {
        ReviewGroup reviewGroup = reviewGroupRepository.findByReviewRequestCode(reviewRequestCode)
                .orElseThrow(() -> new ReviewGroupNotFoundByReviewRequestCodeException(reviewRequestCode));

        return new ReviewGroupResponse(reviewGroup.getReviewee(), reviewGroup.getProjectName());
    }
@Test
    void 리뷰_요청_코드에_대한_리뷰_그룹이_존재하지_않을_경우_예외가_발생한다() {
        // given, when, then
        assertThatThrownBy(() -> reviewGroupLookupService.getReviewGroupSummary("reviewRequestCode"))
                .isInstanceOf(ReviewGroupNotFoundByReviewRequestCodeException.class);
    }