[refactor] 감상, 여행 삭제 로직 변경 (#398)

backend/src/main/java/dev/tripdraw/post/domain/PostRepository.java

@@ -3,12 +3,12 @@
 import static dev.tripdraw.post.exception.PostExceptionType.POST_NOT_FOUND;
 
 import dev.tripdraw.post.exception.PostException;
+import java.util.List;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 
-import java.util.List;
-
 public interface PostRepository extends JpaRepository<Post, Long> {
 
     @Query("SELECT p FROM Post p JOIN FETCH p.point where p.tripId = :tripId")
@@ -19,5 +19,7 @@ default Post getByPostId(Long id) {
                 .orElseThrow(() -> new PostException(POST_NOT_FOUND));
     }
 
-    void deleteByMemberId(Long memberId);
+    @Modifying
+    @Query("DELETE FROM Post p WHERE p.member.id = :memberId")
+    void deleteByMemberId(@Param(value = "memberId") Long memberId);
 }

backend/src/main/java/dev/tripdraw/trip/domain/TripRepository.java

@@ -6,14 +6,17 @@
 import java.util.List;
 import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 
 public interface TripRepository extends JpaRepository<Trip, Long> {
 
     List<Trip> findAllByMemberId(Long memberId);
 
-    void deleteByMemberId(Long memberId);
+    @Modifying
+    @Query("DELETE FROM Trip t WHERE t.member.id = :memberId")
+    void deleteByMemberId(@Param(value = "memberId") Long memberId);
 
     default Trip getById(Long id) {
         return findById(id)

backend/src/test/java/dev/tripdraw/member/application/MemberServiceTest.java

@@ -50,7 +50,7 @@ void setUp() {
         member = memberRepository.save(new Member("통후추", "kakaoId", KAKAO));
         trip = tripRepository.save(new Trip(TripName.from("통후추의 여행"), member));
         Point point = new Point(3.14, 5.25, LocalDateTime.now());
-        trip.add(point);
+        point.setTrip(trip);
         postRepository.save(new Post(
                 "제목",
                 point,

backend/src/test/java/dev/tripdraw/post/domain/PostRepositoryTest.java

@@ -71,13 +71,13 @@ void setUp() {
     void 회원_ID로_감상을_삭제한다() {
         // given
         Post post = new Post("제목", point, "위치", "오늘은 날씨가 좋네요.", member, trip.id());
-        postRepository.save(post);
+        Long postId = postRepository.save(post).id();
 
         // when
         postRepository.deleteByMemberId(member.id());
 
         // then
-        assertThat(postRepository.findById(post.id())).isEmpty();
+        assertThat(postRepository.existsById(postId)).isFalse();
     }
 
     @Test

backend/src/test/java/dev/tripdraw/trip/domain/TripRepositoryTest.java

@@ -99,7 +99,7 @@ void setUp() {
         tripRepository.deleteByMemberId(member.id());
 
         // then
-        assertThat(tripRepository.findById(trip.id())).isEmpty();
+        assertThat(tripRepository.existsById(trip.id())).isFalse();
     }
 
     @Test