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[EA3-168] feature: 스터디 신청 생성, 거절, 승인 테스트 작성
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+201
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‎src/main/java/grep/neogul_coder/domain/studyapplication/exception/code/ApplicationErrorCode.java‎

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@@ -9,7 +9,7 @@ public enum ApplicationErrorCode implements ErrorCode {
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APPLICATION_NOT_FOUND("SA001",HttpStatus.NOT_FOUND,"신청서를 찾을 수 없습니다."),
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ALREADY_APPLICATION("SA002", HttpStatus.BAD_REQUEST, "이미 지원한 모집글입니다."),
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ALREADY_APPLYING("SA003", HttpStatus.BAD_REQUEST, "신청 상태가 APPLYING이 아닙니다."),
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APPLICATION_NOT_APPLYING("SA003", HttpStatus.BAD_REQUEST, "신청 상태가 APPLYING이 아닙니다."),
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LEADER_CANNOT_APPLY("SA004", HttpStatus.BAD_REQUEST, "스터디장은 스터디를 신청할 수 없습니다."),
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LEADER_ONLY_APPROVED("SA005", HttpStatus.BAD_REQUEST, "스터디장만 승인이 가능합니다."),

‎src/main/java/grep/neogul_coder/domain/studyapplication/repository/ApplicationRepository.java‎

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@@ -4,9 +4,12 @@
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import org.springframework.data.jpa.repository.JpaRepository;
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import java.util.List;
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import java.util.Optional;
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public interface ApplicationRepository extends JpaRepository<StudyApplication, Long> {
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List<StudyApplication> findByRecruitmentPostId(Long recruitmentPostId);
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boolean existsByRecruitmentPostIdAndUserId(Long recruitmentPostId, Long userId);
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Optional<StudyApplication> findByIdAndActivatedTrue(Long applicationId);
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}

‎src/main/java/grep/neogul_coder/domain/studyapplication/service/ApplicationService.java‎

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@@ -115,7 +115,7 @@ private void validateNotAlreadyApplied(Long recruitmentPostId, Long userId) {
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private static void validateStatusIsApplying(StudyApplication application) {
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if (application.getStatus() != ApplicationStatus.APPLYING) {
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throw new BusinessException(ALREADY_APPLYING);
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throw new BusinessException(APPLICATION_NOT_APPLYING);
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}
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}
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‎src/test/java/grep/neogul_coder/domain/studyapplication/service/ApplicationServiceTest.java‎

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package grep.neogul_coder.domain.studyapplication.service;
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import grep.neogul_coder.domain.IntegrationTestSupport;
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import grep.neogul_coder.domain.recruitment.post.RecruitmentPost;
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import grep.neogul_coder.domain.recruitment.post.repository.RecruitmentPostRepository;
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import grep.neogul_coder.domain.study.Study;
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import grep.neogul_coder.domain.study.StudyMember;
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import grep.neogul_coder.domain.study.repository.StudyMemberRepository;
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import grep.neogul_coder.domain.study.repository.StudyRepository;
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import grep.neogul_coder.domain.studyapplication.StudyApplication;
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import grep.neogul_coder.domain.studyapplication.controller.dto.request.ApplicationCreateRequest;
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import grep.neogul_coder.domain.studyapplication.repository.ApplicationRepository;
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import grep.neogul_coder.domain.users.entity.User;
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import grep.neogul_coder.domain.users.repository.UserRepository;
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import grep.neogul_coder.global.exception.business.BusinessException;
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import jakarta.persistence.EntityManager;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.DisplayName;
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import org.junit.jupiter.api.Test;
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import org.springframework.beans.factory.annotation.Autowired;
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import java.time.LocalDateTime;
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import java.util.List;
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import static grep.neogul_coder.domain.study.enums.StudyMemberRole.LEADER;
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import static grep.neogul_coder.domain.study.enums.StudyMemberRole.MEMBER;
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import static grep.neogul_coder.domain.studyapplication.ApplicationStatus.*;
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import static grep.neogul_coder.domain.studyapplication.exception.code.ApplicationErrorCode.APPLICATION_NOT_APPLYING;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.assertj.core.api.Assertions.assertThatThrownBy;
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class ApplicationServiceTest extends IntegrationTestSupport {
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@Autowired
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private EntityManager em;
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@Autowired
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private UserRepository userRepository;
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@Autowired
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private StudyRepository studyRepository;
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@Autowired
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private StudyMemberRepository studyMemberRepository;
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@Autowired
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private RecruitmentPostRepository recruitmentPostRepository;
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@Autowired
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private ApplicationService applicationService;
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@Autowired
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private ApplicationRepository applicationRepository;
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private Long userId1;
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private Long userId2;
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private Long studyId;
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private Long recruitmentPostId;
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@BeforeEach
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void init() {
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User user1 = createUser("test1");
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User user2 = createUser("test2");
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userRepository.saveAll(List.of(user1, user2));
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userId1 = user1.getId();
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userId2 = user2.getId();
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Study study = createStudy("스터디", LocalDateTime.parse("2025-07-25T20:20:20"), LocalDateTime.parse("2025-07-28T20:20:20"));
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studyRepository.save(study);
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studyId = study.getId();
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StudyMember studyLeader = createStudyLeader(study, userId1);
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StudyMember studyMember = createStudyMember(study, userId2);
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studyMemberRepository.saveAll(List.of(studyLeader, studyMember));
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RecruitmentPost recruitmentPost = createRecruitmentPost(studyId, userId1, "제목", "내용", 1);
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recruitmentPostRepository.save(recruitmentPost);
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recruitmentPostId = recruitmentPost.getId();
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}
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@DisplayName("신청서를 생성합니다.")
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@Test
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void createApplication() {
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// given
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ApplicationCreateRequest request = ApplicationCreateRequest.builder()
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.applicationReason("자바를 더 공부하고 싶어 지원합니다.")
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.build();
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// when
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Long id = applicationService.createApplication(recruitmentPostId, request, userId2);
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em.flush();
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em.clear();
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// then
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StudyApplication application = applicationRepository.findByIdAndActivatedTrue(id).orElseThrow();
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assertThat(application.getApplicationReason()).isEqualTo("자바를 더 공부하고 싶어 지원합니다.");
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}
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@DisplayName("스터디장이 신청서를 승인합니다.")
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@Test
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void approveApplication() {
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// given
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StudyApplication application = createApplication(recruitmentPostId, userId2);
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applicationRepository.save(application);
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Long id = application.getId();
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// when
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applicationService.approveApplication(id, userId1);
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em.flush();
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em.clear();
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// then
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assertThat(application.getStatus()).isEqualTo(APPROVED);
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}
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@DisplayName("스터디장이 신청서를 거절합니다.")
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@Test
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void rejectApplication() {
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// given
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StudyApplication application = createApplication(recruitmentPostId, userId2);
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applicationRepository.save(application);
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Long id = application.getId();
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// when
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applicationService.rejectApplication(id, userId1);
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em.flush();
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em.clear();
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// then
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assertThat(application.getStatus()).isEqualTo(REJECTED);
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}
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@DisplayName("스터디장이 이미 승인이나 거절한 경우 신청서 거절 시 예외가 발생합니다.")
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@Test
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void rejectApplicationFail() {
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// given
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StudyApplication application = createApplication(recruitmentPostId, userId2);
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applicationRepository.save(application);
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Long id = application.getId();
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applicationService.rejectApplication(id, userId1);
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// when then
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assertThatThrownBy(() ->
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applicationService.rejectApplication(id, userId1))
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.isInstanceOf(BusinessException.class).hasMessage(APPLICATION_NOT_APPLYING.getMessage());
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}
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private static User createUser(String nickname) {
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return User.builder()
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.nickname(nickname)
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.build();
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}
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private static Study createStudy(String name, LocalDateTime startDate, LocalDateTime endDate) {
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return Study.builder()
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.name(name)
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.startDate(startDate)
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.endDate(endDate)
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.build();
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}
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private StudyMember createStudyLeader(Study study, Long userId) {
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return StudyMember.builder()
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.study(study)
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.userId(userId)
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.role(LEADER)
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.build();
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}
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private StudyMember createStudyMember(Study study, Long userId) {
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return StudyMember.builder()
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.study(study)
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.userId(userId)
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.role(MEMBER)
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.build();
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}
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private RecruitmentPost createRecruitmentPost(Long studyId ,Long userId, String subject, String content, int count) {
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return RecruitmentPost.builder()
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.subject(subject)
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.content(content)
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.recruitmentCount(count)
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.studyId(studyId)
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.userId(userId)
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.build();
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}
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private StudyApplication createApplication(Long recruitmentPostId, Long userId) {
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return StudyApplication.builder()
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.recruitmentPostId(recruitmentPostId)
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.userId(userId)
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.applicationReason("자바를 더 공부하고 싶어 지원합니다.")
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.status(APPLYING)
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.build();
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}
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}

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