mongo delete with @Query

@Data
@Builder(toBuilder = true)
@AllArgsConstructor
@NoArgsConstructor
@Document
public class User {
    private static final long serialVersionUID = 1L;

    @Id
    private String id;
    private String username;
}


@Repository
public interface UserRepository extends MongoRepository<User, String> {

    @Query(delete = true, value = "{ '_id': ?0 }")
    long deleteUserById(String id);
}



@SpringBootTest
public class UserTest {

    @Autowired
    private UserRepository userRepository;

    @Test
    void testUser() {
        userRepository.deleteAll();
        var savedUsers = userRepository.saveAll(List.of(
                User.builder().username("john").build(),
                User.builder().username("jane").build(),
                User.builder().username("kate").build(),
                User.builder().username("brian").build()
        ));

        assertThat(userRepository.findAll().size())
                .isEqualTo(4);

        var jane = savedUsers.stream()
                .filter(u -> u.getUsername().equals("jane"))
                .findFirst().orElseThrow();

        var numDeleted = userRepository.deleteUserById(jane.getId());
        assertThat(numDeleted)
                .isEqualTo(1L);

        assertThat(userRepository.findAll())
                .hasSize(3)
                .allMatch(u -> Set.of("john", "kate", "brian").contains(u.getUsername()));
    }
}