[Spring project] 회원 서비스

회원 서비스

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서비스는 리파지토리와 도메인을 이용해서 실제 로직을 구현하는 부분이다. 

1. service 패키지 생성

2. MemberService 클래스 생성.

 

package hello.hello_spring.service;

import hello.hello_spring.domain.Member;
import hello.hello_spring.repository.MemberRepository;
import hello.hello_spring.repository.MemoryMemberRepository;

import java.util.List;
import java.util.Optional;

public class MemberService {
    
    private final MemberRepository memberRepository = new MemoryMemberRepository();
    
    /**
     * 회원 가입
     **/
    public Long join(Member member) {
        
        validateDuplicateMember(member); // 중복 회원 검증
        memberRepository.save(member);
        return member.getId();
    }

    private void validateDuplicateMember(Member member) {
        memberRepository.findByName(member.getName())
                .ifPresent(m -> {
                    throw new IllegalStateException("이미 존재하는 회원입니다. ");
                });
    }
    
    /**
    * 전체 회원 조회
    **/
    public List<Member> findMembers() {
        return memberRepository.findAll();
    }

    /**
     * 회원 단건 조회
     */
    public Optional<Member> findOne(Long memberId) {
        return memberRepository.findById(memberId);
        
    }
    
}

 

서비스 테스트 코드

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Command+shitf+T 단축키를 이용하면 자동으로 패키지와 클래스를 생성해준다. 

 

 

package hello.hello_spring.service;

import hello.hello_spring.domain.Member;
import hello.hello_spring.repository.MemoryMemberRepository;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import java.util.Optional;

import static org.junit.jupiter.api.Assertions.*;

class MemberServiceTest {

    MemberService memberService;
    MemoryMemberRepository  repository;
    
    @BeforeEach
    public void beforeEach() {
        repository = new MemoryMemberRepository();
        memberService = new MemberService(repository);
    }
    
    @AfterEach
    public void afterEach() {
        repository.clearStore();
    }
    
    @Test
    void 회원가입() {
        // given
        Member member = new Member();
        member.setName("hello");

        // when
        Long saveId = memberService.join(member);

        // then
        Member findMember = memberService.findOne(saveId).get();
        Assertions.assertThat(member.getName()).isEqualTo(findMember.getName());
    }

    @Test
    public void 중복_회원_예외() {
        //given
        Member member1 = new Member();
        member1.setName("Bae");

        Member member2 = new Member();
        member2.setName("Bae");

        //when
        memberService.join(member1);
        assertThrows(IllegalStateException.class, () -> memberService.join(member2));

        //then

    }

    @Test
    void findMembers() {

    }

    @Test
    void findOne() {
    }
}

 

 

 

* 인프런 '스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술' 강의를 참고하여 작성했습니다.