test: Playlist 삭제시 완전 종속 하위요소 삭제 테스트

#88

src/test/java/MusicPlatform/service/playlist/PlaylistServiceTest.java

@@ -0,0 +1,40 @@
+package MusicPlatform.service.playlist;
+
+import static org.hibernate.validator.internal.util.Contracts.assertTrue;
+
+import MusicPlatform.domain.playlist.entity.Playlist;
+import MusicPlatform.domain.playlist.repository.PlaylistRepository;
+import MusicPlatform.domain.playlist.service.PlaylistService;
+import jakarta.transaction.Transactional;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.test.context.jdbc.Sql;
+
+@Transactional
+@SpringBootTest
+@Sql("/sql/service-test-data.sql")
+public class PlaylistServiceTest {
+
+    @Autowired
+    private JdbcTemplate jdbcTemplate;
+    @Autowired
+    PlaylistService playlistService;
+    @Autowired
+    PlaylistRepository playlistRepository;
+
+    @Test
+    @DisplayName("Playlist 삭제 시 그 하위 종속 요소가 함께 삭제된다.")
+    public void Playlist_삭제시_하위_종속_항목이_삭제된다() throws Exception {
+        //given
+        Playlist playlist = playlistRepository.findById(1L).orElseThrow();
+        //when
+        playlistService.deletePlaylist(playlist.getArtist().getUuid(), playlist.getUuid());
+        playlistRepository.flush();
+        //then
+        int count = jdbcTemplate.queryForObject("SELECT COUNT(*) FROM playlist_item pi WHERE pi.playlist_id = ?",Integer.class, playlist.getId());
+        assertTrue(count == 0 , "하위 종속 요소 PlaylistItem 삭제되지 않음");
+    }
+}

src/test/resources/sql/service-test-data.sql

@@ -1,10 +1,14 @@
 insert into artist (id, uuid, name, email, link1, link2, description, provider, artist_image, role, is_deleted)
 values (1, UUID(), 'artist1', '[email protected]', 'https://instagram.com', NULL, 'hello I am artist1', 'google', 'image.jpg', 'ROLE_USER', false);
-insert into album (`id`, `uuid`, `title`, `description`, `art_image`, `release_date`, `artist_id`, `is_deleted`)
+insert into album (id, uuid, title, description, art_image, release_date, artist_id, is_deleted)
 values (1, UUID(), 'album1', 'This is a description of the album', 'image.jpg', '2025-01-01', 1, false);
-insert into album_like (`id`, `uuid`, `artist_id`, `album_id`)
+insert into album_like (id, uuid, artist_id, album_id)
 values (1, UUID(), 1, 1);
-insert into album_comment (`id`, `uuid`, `comment`, `artist_id`, `album_id`, `is_deleted`)
+insert into album_comment (id, uuid, comment, artist_id, album_id, is_deleted)
 values (1, UUID(), 'awesome song!', 1, 1, false);
-insert into track (`id`, `uuid`, `title`, `lyric`, `track_url`, `duration`, `album_id`, `is_deleted`)
+insert into track (id, uuid, title, lyric, track_url, duration, album_id, is_deleted)
 values (1, UUID(), 'title', 'lyric', 's3.com', 360, 1, false);
+insert into playlist (id, uuid, title, description, cover_image_url, artist_id, is_deleted)
+values (1, UUID(), 'title', 'cool playlist', 'image.jpg', 1, false);
+insert into playlist_item (id, uuid, track_id, playlist_id)
+values (1, UUID(), 1,1);