회원의 닉네임을 일정주기를 통해 변경할 수 있도록 구현

backend/src/main/java/com/votogether/domain/member/entity/Member.java

@@ -5,6 +5,8 @@
 import com.votogether.domain.member.entity.vo.Gender;
 import com.votogether.domain.member.entity.vo.Nickname;
 import com.votogether.domain.member.entity.vo.SocialType;
+import com.votogether.domain.member.exception.MemberExceptionType;
+import com.votogether.global.exception.BadRequestException;
 import jakarta.persistence.Column;
 import jakarta.persistence.Embedded;
 import jakarta.persistence.Entity;
@@ -15,6 +17,7 @@
 import jakarta.persistence.Id;
 import jakarta.persistence.Index;
 import jakarta.persistence.Table;
+import java.time.LocalDateTime;
 import lombok.AccessLevel;
 import lombok.Builder;
 import lombok.EqualsAndHashCode;
@@ -77,10 +80,24 @@ public static Member from(final KakaoMemberResponse response) {
  .build();
  }
 
- public void changeNickname(final String nickname) {
+ public void changeNicknameByCycle(final String nickname, final Long days) {
+ if (nickname.startsWith(INITIAL_NICKNAME_PREFIX)) {
+ throw new BadRequestException(MemberExceptionType.NOT_ALLOWED_INITIAL_NICKNAME_PREFIX);
+ }
+ if (isNotPassedChangingCycle(days) && isNotInitialNickname()) {
+ throw new BadRequestException(MemberExceptionType.NOT_PASSED_NICKNAME_CHANGING_CYCLE);
+ }
  this.nickname = new Nickname(nickname);
  }
 
+ private boolean isNotPassedChangingCycle(final Long days) {
+ return this.getUpdatedAt().isAfter(LocalDateTime.now().minusDays(days));
+ }
+
+ private boolean isNotInitialNickname() {
+ return this.nickname.nonStartsWith(INITIAL_NICKNAME_PREFIX);
+ }
+
  public void changeNicknameByReport() {
  final String reportedNickname = "Pause1" + RandomStringUtils.random(9, true, true);
  this.nickname = new Nickname(reportedNickname);

backend/src/main/java/com/votogether/domain/member/entity/vo/Nickname.java

@@ -34,4 +34,8 @@ private void validateNickname(final String nickname) {
  }
  }
 
+ public boolean nonStartsWith(final String prefix) {
+ return !this.value.startsWith(prefix);
+ }
+
 }

backend/src/main/java/com/votogether/domain/member/exception/MemberExceptionType.java

@@ -13,6 +13,8 @@ public enum MemberExceptionType implements ExceptionType {
  INVALID_AGE(804, "존재할 수 없는 연령입니다."),
  ALREADY_ASSIGNED_GENDER(805, "이미 성별이 할당되어 있습니다."),
  ALREADY_ASSIGNED_BIRTH_YEAR(806, "이미 출생년도가 할당되어 있습니다."),
+ NOT_PASSED_NICKNAME_CHANGING_CYCLE(807, "최소 닉네임 변경주기가 지나지 않았습니다."),
+ NOT_ALLOWED_INITIAL_NICKNAME_PREFIX(808, "초기 닉네임에 포함된 접두어로 닉네임을 변경할 수 없습니다."),
  ;
 
  private final int code;

backend/src/main/java/com/votogether/domain/member/service/MemberService.java

@@ -29,6 +29,8 @@
 @Service
 public class MemberService {
 
+ private static final Long NICKNAME_CHANGING_CYCLE = 14L;
+
  private final MemberRepository memberRepository;
  private final MemberCategoryRepository memberCategoryRepository;
  private final PostRepository postRepository;
@@ -68,7 +70,7 @@ public MemberInfoResponse findMemberInfo(final Member member) {
  @Transactional
  public void changeNickname(final Member member, final String nickname) {
  validateExistentNickname(nickname);
- member.changeNickname(nickname);
+ member.changeNicknameByCycle(nickname, NICKNAME_CHANGING_CYCLE);
  }
 
  private void validateExistentNickname(final String nickname) {

backend/src/test/java/com/votogether/domain/member/entity/MemberTest.java

@@ -0,0 +1,115 @@
+package com.votogether.domain.member.entity;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+import com.votogether.domain.member.entity.vo.Gender;
+import com.votogether.domain.member.entity.vo.SocialType;
+import com.votogether.global.exception.BadRequestException;
+import java.time.LocalDateTime;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.springframework.test.util.ReflectionTestUtils;
+
+class MemberTest {
+
+ @Nested
+ @DisplayName("닉네임을 주기에 따라 변경하는 경우")
+ class ChangeNicknameByCycle {
+
+ @Test
+ @DisplayName("15일전에 변경된 닉네임은 14일 주기로 변경할 때 성공적으로 변경된다.")
+ void success() {
+ // given
+ Member member = Member.builder()
+ .nickname("저문")
+ .gender(Gender.MALE)
+ .birthYear(1966)
+ .socialId("abc123")
+ .socialType(SocialType.KAKAO)
+ .build();
+
+ LocalDateTime now = LocalDateTime.now().minusDays(15L);
+ ReflectionTestUtils.setField(member, "createdAt", now);
+ ReflectionTestUtils.setField(member, "updatedAt", now.plusHours(1L));
+
+ // when
+ member.changeNicknameByCycle("저라니", 14L);
+
+ // then
+ assertThat(member.getNickname()).isEqualTo("저라니");
+ }
+
+ @Test
+ @DisplayName("13일 전에 변경된 닉네임은 14일 주기로 변경하더라도 한번도 닉네임을 변경하지 않았다면 성공적으로 변경된다.")
+ void successFirstChange() {
+ // given
+ Member member = Member.builder()
+ .nickname("익명의손님fFp4vAgX2d")
+ .gender(Gender.MALE)
+ .birthYear(1966)
+ .socialId("abc123")
+ .socialType(SocialType.KAKAO)
+ .build();
+
+ LocalDateTime now = LocalDateTime.now().minusDays(13L);
+ ReflectionTestUtils.setField(member, "createdAt", now);
+ ReflectionTestUtils.setField(member, "updatedAt", now.plusHours(1L));
+
+ // when
+ member.changeNicknameByCycle("저라니", 14L);
+
+ // then
+ assertThat(member.getNickname()).isEqualTo("저라니");
+ }
+
+ @Test
+ @DisplayName("13일 전에 변경된 닉네임은 14일 주기로 변경할 때 변경에 실패한다.")
+ void fail() {
+ // given
+ Member member = Member.builder()
+ .nickname("저문")
+ .gender(Gender.MALE)
+ .birthYear(1966)
+ .socialId("abc123")
+ .socialType(SocialType.KAKAO)
+ .build();
+
+ LocalDateTime createdTime = LocalDateTime.now().minusDays(20L);
+ LocalDateTime updatedTime = LocalDateTime.now().minusDays(13L);
+ ReflectionTestUtils.setField(member, "createdAt", createdTime);
+ ReflectionTestUtils.setField(member, "updatedAt", updatedTime);
+
+ // when, then
+ assertThatThrownBy(() -> member.changeNicknameByCycle("저라니", 14L))
+ .isInstanceOf(BadRequestException.class)
+ .hasMessage("최소 닉네임 변경주기가 지나지 않았습니다.");
+ }
+
+ @Test
+ @DisplayName("초기 닉네임의 접두사가 포함되어 있으면 예외가 발생한다.")
+ void notAllowedChangeToInitialNicknamePrefix() {
+ // given
+ Member member = Member.builder()
+ .nickname("저문")
+ .gender(Gender.MALE)
+ .birthYear(1966)
+ .socialId("abc123")
+ .socialType(SocialType.KAKAO)
+ .build();
+
+ LocalDateTime createdTime = LocalDateTime.now().minusDays(20L);
+ LocalDateTime updatedTime = LocalDateTime.now().minusDays(7L);
+ ReflectionTestUtils.setField(member, "createdAt", createdTime);
+ ReflectionTestUtils.setField(member, "updatedAt", updatedTime);
+
+ // when, then
+ assertThatThrownBy(() -> member.changeNicknameByCycle("익명의손님저라니", 14L))
+ .isInstanceOf(BadRequestException.class)
+ .hasMessage("초기 닉네임에 포함된 접두어로 닉네임을 변경할 수 없습니다.");
+ }
+
+ }
+
+}

backend/src/test/java/com/votogether/domain/member/service/MemberServiceTest.java

@@ -84,17 +84,24 @@ void register() {
  class ChangeNickname {
 
  @Test
- @DisplayName("주어질 때 정상적으로 닉네임을 변경한다.")
+ @DisplayName("한번도 변경되지 않았다면 닉네임 변경 주기에 상관없이 닉네임을 변경한다.")
  void changeNickname() {
  // given
+ Member member = Member.builder()
+ .nickname("익명의손님fFp4vAgX2d")
+ .gender(Gender.MALE)
+ .birthYear(1966)
+ .socialId("abc123")
+ .socialType(SocialType.KAKAO)
+ .build();
  String newNickname = "jeomxon";
- Member member = memberRepository.save(MemberFixtures.FEMALE_30.get());
+ Member savedMember = memberRepository.save(member);
 
  // when
- memberService.changeNickname(member, newNickname);
+ memberService.changeNickname(savedMember, newNickname);
 
  // then
- assertThat(member.getNickname()).isEqualTo(newNickname);
+ assertThat(savedMember.getNickname()).isEqualTo(newNickname);
  }
 
  @ParameterizedTest
@@ -136,6 +143,27 @@ void changeNicknameEqualToPrevious() {
  .hasMessage("이미 중복된 닉네임이 존재합니다.");
  }
 
+ @Test
+ @DisplayName("최초 닉네임을 변경한 후 닉네임 변경 주기가 지나지 않았다면 예외가 발생한다.")
+ void changeNicknameThrowsExceptionNotPassedChangingCycle() {
+ // given
+ Member member = Member.builder()
+ .nickname("익명의손님fFp4vAgX2d")
+ .gender(Gender.MALE)
+ .birthYear(1966)
+ .socialId("abc123")
+ .socialType(SocialType.KAKAO)
+ .build();
+ Member savedMember = memberRepository.save(member);
+
+ memberService.changeNickname(savedMember, "저문");
+
+ // when, then
+ assertThatThrownBy(() -> memberService.changeNickname(savedMember, "저라니"))
+ .isInstanceOf(BadRequestException.class)
+ .hasMessage("최소 닉네임 변경주기가 지나지 않았습니다.");
+ }
+
  }
 
  @Nested