fix: 방장 자신에 대한 추방 버그 (#177)

* fix: 방장 자신 추방 못하도록 validate 추가

* feature: 방 수정 전 정보 불러오기에 방장 ID 추가

* test: 테스트 코드 작성

* fix: 방 참여 기록 조회 최신순으로 변경

src/main/java/com/moabam/api/application/room/RoomService.java

@@ -135,6 +135,7 @@ public void mandateManager(Long managerId, Long roomId, Long memberId) {
 
 	@Transactional
 	public void deportParticipant(Long managerId, Long roomId, Long memberId) {
+		validateDeportParticipant(managerId, memberId);
 		Participant managerParticipant = getParticipant(managerId, roomId);
 		Participant memberParticipant = getParticipant(memberId, roomId);
 		validateManagerAuthorization(managerParticipant);
@@ -172,6 +173,12 @@ private Participant getParticipant(Long memberId, Long roomId) {
 			.orElseThrow(() -> new NotFoundException(PARTICIPANT_NOT_FOUND));
 	}
 
+	private void validateDeportParticipant(Long managerId, Long memberId) {
+		if (managerId.equals(memberId)) {
+			throw new BadRequestException(PARTICIPANT_DEPORT_ERROR);
+		}
+	}
+
 	private void validateManagerAuthorization(Participant participant) {
 		if (!participant.isManager()) {
 			throw new ForbiddenException(ROOM_MODIFY_UNAUTHORIZED_REQUEST);

src/main/java/com/moabam/api/application/room/SearchService.java

@@ -147,7 +147,7 @@ public ManageRoomResponse getRoomForModification(Long memberId, Long roomId) {
 			participantResponses.add(ParticipantMapper.toParticipantResponse(member, contributionPoint));
 		}
 
-		return RoomMapper.toManageRoomResponse(room, routineResponses, participantResponses);
+		return RoomMapper.toManageRoomResponse(room, memberId, routineResponses, participantResponses);
 	}
 
 	public GetAllRoomsResponse getAllRooms(@Nullable RoomType roomType, @Nullable Long roomId) {

src/main/java/com/moabam/api/application/room/mapper/RoomMapper.java

@@ -99,11 +99,12 @@ public static RoomsHistoryResponse toRoomsHistoryResponse(List<RoomHistoryRespon
 			.build();
 	}
 
-	public static ManageRoomResponse toManageRoomResponse(Room room, List<RoutineResponse> routines,
+	public static ManageRoomResponse toManageRoomResponse(Room room, Long managerId, List<RoutineResponse> routines,
 		List<ParticipantResponse> participantResponses) {
 		return ManageRoomResponse.builder()
 			.roomId(room.getId())
 			.title(room.getTitle())
+			.managerId(managerId)
 			.announcement(room.getAnnouncement())
 			.roomType(room.getRoomType())
 			.certifyTime(room.getCertifyTime())

src/main/java/com/moabam/api/domain/room/repository/ParticipantSearchRepository.java

@@ -62,6 +62,7 @@ public List<Participant> findAllParticipantsByMemberId(Long memberId) {
 			.where(
 				participant.memberId.eq(memberId)
 			)
+			.orderBy(participant.createdAt.desc())
 			.fetch();
 	}
 

src/main/java/com/moabam/api/dto/room/ManageRoomResponse.java

@@ -10,6 +10,7 @@
 public record ManageRoomResponse(
 	Long roomId,
 	String title,
+	Long managerId,
 	String announcement,
 	RoomType roomType,
 	int certifyTime,

src/main/java/com/moabam/global/error/model/ErrorMessage.java

@@ -29,6 +29,7 @@ public enum ErrorMessage {
 	INVALID_REQUEST_URL("잘못된 URL 요청입니다."),
 	INVALID_CERTIFY_TIME("현재 인증 시간이 아닙니다."),
 	CERTIFICATION_NOT_FOUND("인증 정보가 없습니다."),
+	PARTICIPANT_DEPORT_ERROR("방장은 자신을 추방할 수 없습니다."),
 
 	LOGIN_FAILED("로그인에 실패했습니다."),
 	REQUEST_FAILED("네트워크 접근 실패입니다."),

src/test/java/com/moabam/api/presentation/RoomControllerTest.java

@@ -887,6 +887,25 @@ void deport_member_success() throws Exception {
 		assertThat(participantSearchRepository.findOne(member.getId(), room.getId())).isEmpty();
 	}
 
+	@DisplayName("방장 본인 추방 시도 - 예외 처리")
+	@WithMember(id = 1L)
+	@Test
+	void deport_self_fail() throws Exception {
+		// given
+		Room room = RoomFixture.room();
+
+		Participant managerParticipant = RoomFixture.participant(room, member.getId());
+		managerParticipant.enableManager();
+
+		roomRepository.save(room);
+		participantRepository.save(managerParticipant);
+
+		// expected
+		mockMvc.perform(delete("/rooms/" + room.getId() + "/members/" + member.getId()))
+			.andExpect(status().isBadRequest())
+			.andDo(print());
+	}
+
 	@DisplayName("방장 위임 성공")
 	@WithMember(id = 1L)
 	@Test