public void createComment(
            final Long memberId,
            final Long boardId,
            final CommentCreateRequest request
    ) {
        Comment comment = Comment.builder()
                .boardId(boardId)
                .writerId(memberId)
                .content(request.comment())
                .build();

        commentRepository.save(comment);
    }
@Test
    void 댓글을_생성한다() {
        // given
        CommentCreateRequest req = new CommentCreateRequest("내용");

        // when & then
        assertDoesNotThrow(() -> commentService.createComment(1L, 1L, req));
    }