refactor: RecommendedPost 생성자 변경

#1397

Author: nuyh99

backend/src/main/java/wooteco/prolog/roadmap/application/RecommendedPostService.java

@@ -28,9 +28,7 @@ public RecommendedPostService(final RecommendedPostRepository recommendedPostRep
     @Transactional
     public Long create(final Long keywordId, final RecommendedRequest request) {
         final Keyword keyword = findKeywordOrThrow(keywordId);
-
-        final RecommendedPost post = new RecommendedPost(request.getUrl());
-        post.addKeyword(keyword);
+        final RecommendedPost post = new RecommendedPost(request.getUrl(), keyword);
 
         return recommendedPostRepository.save(post).getId();
     }

backend/src/main/java/wooteco/prolog/roadmap/domain/RecommendedPost.java

@@ -31,8 +31,8 @@ public class RecommendedPost {
     @JoinColumn(nullable = false)
     private Keyword keyword;
 
-    public RecommendedPost(final String url) {
-        this(null, url, null);
+    public RecommendedPost(final String url, final Keyword keyword) {
+        this(null, url, keyword);
     }
 
     public void updateUrl(final String url) {

backend/src/test/java/wooteco/prolog/roadmap/domain/RecommendedPostTest.java

@@ -27,8 +27,8 @@ void remove() {
     @DisplayName("소속 키워드를 추가한다")
     void addKeyword() {
         //given
-        final RecommendedPost post = new RecommendedPost("http://연어");
         final Keyword keyword = Keyword.createKeyword("name", "description", 1, 1, 1L, null);
+        final RecommendedPost post = new RecommendedPost("http://연어", keyword);
 
         //when
         post.addKeyword(keyword);