public void patchCommentById(
            final Long memberId,
            final Long commentId,
            final CommentPatchRequest request
    ) {
        Comment comment = findComment(commentId);
        comment.update(request.comment(), memberId);
    }
@Test
    void 글쓴이가_아니라면_댓글을_수정하지_못한다() {
        // given
        commentRepository.save(댓글_생성());
        String text = "edit";
        CommentPatchRequest req = new CommentPatchRequest(text);

        // when & then
        assertThatThrownBy(() -> commentService.patchCommentById(2L, 1L, req))
                .isInstanceOf(CommentWriterNotEqualsException.class);
    }