test: Track 삭제시 완전 종속 하위요소 삭제 테스트

#88

src/test/java/MusicPlatform/service/album/AlbumServiceTest.java

@@ -0,0 +1,43 @@
+package MusicPlatform.service.album;
+
+import static org.hibernate.validator.internal.util.Contracts.assertTrue;
+
+import MusicPlatform.domain.album.entity.Album;
+import MusicPlatform.domain.album.repository.AlbumRepository;
+import MusicPlatform.domain.album.service.AlbumService;
+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;
+
+@SpringBootTest
+@Transactional
+@Sql("/sql/service-test-data.sql")
+public class AlbumServiceTest {
+    @Autowired
+    private JdbcTemplate jdbcTemplate;
+    @Autowired
+    private AlbumService albumService;
+    @Autowired
+    private AlbumRepository albumRepository;
+
+    @Test
+    @DisplayName("Album 삭제 시 그 하위 종속 요소가 함께 삭제된다.")
+    public void Album_삭제_시_그_하위_종속_요소가_함께_삭제된다() throws Exception {
+        //given
+        Album album = albumRepository.findById(1L).orElseThrow();
+        Integer count = jdbcTemplate.queryForObject("SELECT COUNT(*) FROM track t where t.album_id = ? and t.is_deleted = false", Integer.class, album.getId());
+        assertTrue(count > 0, "data.sql 정상 실행되지 않음");
+
+        //when
+        albumService.deleteByUuid(album.getUuid());
+        albumRepository.flush();
+
+        //then
+        count = jdbcTemplate.queryForObject("SELECT COUNT(*) FROM track t where t.album_id = ? and t.is_deleted = false", Integer.class, album.getId());
+        assertTrue(count == 0,"하위 종속 요소 Track 삭제되지 않음");
+    }
+}