Spring Data JPA - How to insert child entities with composite key?

Like

@Entity
@Table(name = "like")
@Data
public class Like {
	
	@EmbeddedId
	private LikeKey likeKey;
	
	@Column(name = "word")
	private String word;
	
	@MapsId(value = "userNo")
	@ManyToOne(optional = false, targetEntity = User.class)
	@JoinColumn(name = "uno")
	private User user;
	
	@Embeddable
	@Data
	@NoArgsConstructor
	@AllArgsConstructor
	public static class LikeKey implements Serializable {
		
		private static final long serialVersionUID = 2116470670954200809L;

		@Column(name = "likeNo")
		private Long likeNo;
		
		@Column(name = "uno")
		private Long userNo;
		
	}

}

Test

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = SpringJpaTestApplication.class)
@WebAppConfiguration
@IntegrationTest("server.port:0")
public class Test {
	
	@Autowired
	private UserRepository userRepository;
	
	@org.junit.Test
	public void application() throws Exception {
		User user = new User();
		user.setType(USER_TYPE.USER);
			
		Like like = new Like();
		LikeKey likeKey = new LikeKey();
		likeKey.setLikeNo(1L);
		
		like.setLikeKey(likeKey);
		like.setWord("word");
		like.setUser(user);
		
		user.getLikes().add(like);
		
		userRepository.save(user);
	}

}

User

@Entity
@Table(name = "user")
@Data
public class User {

	@Id
	@GeneratedValue
	@Column(name = "uno")
	private Long userNo;

	@Column(name = "user_type")
	@Enumerated(EnumType.STRING)
	private USER_TYPE type;
	
	@OneToMany(mappedBy = "user", cascade = CascadeType.ALL)
	private List<Like> likes = new ArrayList<>();
	
	public enum USER_TYPE {USER, ADMIN}

	@Override
	public String toString() {
		return "User [userNo=" + userNo + ", type=" + type + ", likes=" + likes + "]";
	}
	
}