JdbcTemplate 에서의 영속성 컨텍스트 삭제 후 테스트 성공

[java-saeng]

MessageDaoTest에서는 영속성 컨텍스트를 clear 해주지 않으면 테스트 통과하지 않고,
RoomQueryServiceTest에서는 영속성 컨텍스트를 clear 하지 않아도 테스트를 통과해요.

테스트가 실패한 이유는 null이어서 그럽니다.
그 이유가 처음에 영속성 컨텍스트에 캐싱될 때의 값들인데, 이게 findById 로 해도 영속성 컨텍스트에 있는 값을 가져옵니다.

근데 왜 RoomQueryServiceTest에서는 clear를 안해줘도 통과하는 걸까요?

final Member recentlyMessage1Owner =
    memberRepository.findById(resultMessage1.getSenderId()).get();
final Member recentlyMessage2Owner =
    memberRepository.findById(resultMessage2.getSenderId()).get();

이 부분이 두 테스트에서 공통적으로 조회해오는데, QueryServiceTest에서는 select 쿼리를, MessageDaoTest에서는 select 쿼리를 날리지 않아요.

MessageDaoTest

package com.emmsale.message_room.infrastructure.persistence;

import com.emmsale.helper.JpaRepositorySliceTestHelper;
import com.emmsale.member.domain.Member;
import com.emmsale.member.domain.MemberRepository;
import com.emmsale.message_room.domain.Message;
import com.emmsale.message_room.domain.MessageRepository;
import com.emmsale.message_room.domain.Room;
import com.emmsale.message_room.domain.RoomId;
import com.emmsale.message_room.domain.RoomRepository;
import java.time.LocalDateTime;
import java.util.List;
import javax.persistence.EntityManager;
import javax.sql.DataSource;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.test.annotation.Rollback;

class MessageDaoTest extends JpaRepositorySliceTestHelper {

  @Autowired
  private RoomRepository roomRepository;
  @Autowired
  private MessageRepository messageRepository;
  @Autowired
  private MemberRepository memberRepository;
  @Autowired
  private DataSource dataSource;
  private MessageDao messageDao;
  @Autowired
  private EntityManager entityManager;

  @BeforeEach
  void init() {
    messageDao = new MessageDao(new JdbcTemplate(dataSource));
  }

  @Test
  @Rollback(value = false)
  @DisplayName("findRecentlyMessages() : 사용자가 참여하고 있는 Room 중에서 가장 최근에 받은 메시지들을 조회할 수 있다.")
  void test_findRecentlyMessages() throws Exception {
    //given
    final Member member = memberRepository.findById(1L).get();
    member.updateName("member1");

    roomRepository.saveAll(List.of(
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c1", member.getId()),
            LocalDateTime.parse("2023-09-05T16:26:20.751352")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c1", 2L),
            LocalDateTime.parse("2023-09-07T16:48:24")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c2", member.getId()),
            LocalDateTime.parse("2023-09-07T16:48:24")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c2", 3L),
            LocalDateTime.parse("2023-09-07T16:48:24")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c3", member.getId()),
            LocalDateTime.parse("2023-10-07T16:48:24")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c3", 4L),
            LocalDateTime.parse("2023-08-07T16:45:39"))
    ));

    final Message resultMessage1 = new Message(
        "방1메시지3",
        member.getId(),
        "feed014c-33f7-418c-8841-5553db5f22c1",
        LocalDateTime.parse("2023-10-07T16:45:39")
    );
    final Message resultMessage2 = new Message(
        "방2메시지4",
        3L,
        "feed014c-33f7-418c-8841-5553db5f22c2",
        LocalDateTime.parse("2023-10-07T16:45:39")
    );
    messageRepository.saveAll(
        List.of(
            new Message("방1메시지1", member.getId(), "feed014c-33f7-418c-8841-5553db5f22c1",
                LocalDateTime.parse("2023-05-07T16:45:39")),
            new Message("방1메시지2", member.getId(), "feed014c-33f7-418c-8841-5553db5f22c1",
                LocalDateTime.parse("2023-06-07T16:45:39")),
            resultMessage1,
            resultMessage2,
            new Message("방3메시지5", member.getId(), "feed014c-33f7-418c-8841-5553db5f22c3",
                LocalDateTime.parse("2023-08-07T16:45:39"))
        )
    );

    memberRepository.save(new Member(3L, "image", "username3"))
        .updateName("member3");
    memberRepository.save(new Member(4L, "image", "username3"))
        .updateName("member4");
    memberRepository.save(new Member(5L, "image", "username3"))
        .updateName("member5");

//    entityManager.flush();
//    entityManager.clear();

    final Member recentlyMessage1Owner =
        memberRepository.findById(resultMessage1.getSenderId()).get();
    final Member recentlyMessage2Owner =
        memberRepository.findById(resultMessage2.getSenderId()).get();

    final List<MessageOverview> actual = List.of(
        new MessageOverview(
            resultMessage1.getId(), resultMessage1.getContent(),
            resultMessage1.getCreatedAt(), resultMessage1.getSenderId(),
            resultMessage1.getRoomId(), recentlyMessage1Owner.getName()),
        new MessageOverview(
            resultMessage2.getId(), resultMessage2.getContent(),
            resultMessage2.getCreatedAt(), resultMessage2.getSenderId(),
            resultMessage2.getRoomId(), recentlyMessage2Owner.getName())
    );

    //when
    final List<MessageOverview> expect = messageDao.findRecentlyMessages(member.getId());

    //then
    Assertions.assertThat(actual)
        .usingRecursiveComparison()
        .isEqualTo(expect);
  }
}

RoomQueryServiceTest

package com.emmsale.message_room.application;

import static org.assertj.core.api.Assertions.*;

import com.emmsale.helper.ServiceIntegrationTestHelper;
import com.emmsale.member.domain.Member;
import com.emmsale.member.domain.MemberRepository;
import com.emmsale.message_room.application.dto.RoomResponse;
import com.emmsale.message_room.domain.Message;
import com.emmsale.message_room.domain.MessageRepository;
import com.emmsale.message_room.domain.Room;
import com.emmsale.message_room.domain.RoomId;
import com.emmsale.message_room.domain.RoomRepository;
import java.time.LocalDateTime;
import java.util.List;
import javax.persistence.EntityManager;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;

class RoomQueryServiceTest extends ServiceIntegrationTestHelper {

  @Autowired
  private RoomQueryService roomQueryService;
  @Autowired
  private RoomRepository roomRepository;
  @Autowired
  private MessageRepository messageRepository;
  @Autowired
  private MemberRepository memberRepository;
  @Autowired
  private EntityManager entityManager;

  @Test
  @DisplayName("findAll() : 사용자가 중도에 나가는 Room에 상관없이 참여하고 있는 Room 중에서 가장 최근에 받은 메시지들을 조회할 수 있다.")
  void test_findAll() throws Exception {
    final Member member = memberRepository.findById(1L).get();
    member.updateName("member1");

    roomRepository.saveAll(List.of(
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c1", member.getId()),
            LocalDateTime.parse("2023-09-05T16:26:20.751352")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c1", 2L),
            LocalDateTime.parse("2023-09-07T16:48:24")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c2", member.getId()),
            LocalDateTime.parse("2023-09-07T16:48:24")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c2", 3L),
            LocalDateTime.parse("2023-09-07T16:48:24")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c3", member.getId()),
            LocalDateTime.parse("2023-10-07T16:48:24")),
        new Room(new RoomId("feed014c-33f7-418c-8841-5553db5f22c3", 4L),
            LocalDateTime.parse("2023-08-07T16:45:39"))
    ));

    final Message resultMessage1 = new Message(
        "방1메시지3",
        member.getId(),
        "feed014c-33f7-418c-8841-5553db5f22c1",
        LocalDateTime.parse("2023-10-07T16:45:39")
    );
    final Message resultMessage2 = new Message(
        "방2메시지4",
        3L,
        "feed014c-33f7-418c-8841-5553db5f22c2",
        LocalDateTime.parse("2023-10-07T16:45:39")
    );
    messageRepository.saveAll(
        List.of(
            new Message("방1메시지1", member.getId(), "feed014c-33f7-418c-8841-5553db5f22c1",
                LocalDateTime.parse("2023-05-07T16:45:39")),
            new Message("방1메시지2", member.getId(), "feed014c-33f7-418c-8841-5553db5f22c1",
                LocalDateTime.parse("2023-06-07T16:45:39")),
            resultMessage1,
            resultMessage2,
            new Message("방3메시지5", member.getId(), "feed014c-33f7-418c-8841-5553db5f22c3",
                LocalDateTime.parse("2023-08-07T16:45:39"))
        )
    );

    memberRepository.save(new Member(3L, "image", "username3"))
        .updateName("member3");
    memberRepository.save(new Member(4L, "image", "username3"))
        .updateName("member4");
    memberRepository.save(new Member(5L, "image", "username3"))
        .updateName("member5");

    final Member recentlyMessage1Owner =
        memberRepository.findById(resultMessage1.getSenderId()).get();
    final Member recentlyMessage2Owner =
        memberRepository.findById(resultMessage2.getSenderId()).get();

    final List<RoomResponse> actual = List.of(
        new RoomResponse(
            recentlyMessage1Owner.getName(),
            resultMessage1.getContent(),
            resultMessage1.getCreatedAt()
        ),
        new RoomResponse(
            recentlyMessage2Owner.getName(),
            resultMessage2.getContent(),
            resultMessage2.getCreatedAt()
        )
    );

    //when
    final List<RoomResponse> expect = roomQueryService.findAll(member, member.getId());

    //then
    assertThat(actual)
        .usingRecursiveComparison()
        .isEqualTo(expect);
  }
}

[java-saeng]

일단은 QueryServiceTest 보니까 member의 이름들이 모두 null로 되어있어서 테스트가 성공했습니다,,

트랜잭션 범위가 아니어서 변경 감지가 안먹는 것 같네요,,

[java-saeng]

이유 알려주세요ㅠ