[Spring] 회원 서비스 테스트

MemberService.class

package hello.hellospring.service;

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

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

public class MemberService {

    private final MemberRepository  memberRepository;

    //MemberService입장에서 외부repository를 넣어줌 - > Dependency Injection!
    public MemberService(MemberRepository memberRepository){
        this.memberRepository = memberRepository;
    }

    //회원가입

    public Long join(Member member){
        //같은 있는 중복 회원X
        validateDuplicateMember(member);

        memberRepository.save(member);
        return member.getId();
    }

    private void validateDuplicateMember(Member member) {
        memberRepository.findByName(member.getName())
                        .ifPresent(m -> {
                            throw new IllegalStateException("이미 존재하는 회원입니다.");
                        });
    }

    public List<Member> findMembers(){
        return memberRepository.findAll();
    }

    public Optional<Member> findOne(Long memberId){
        return memberRepository.findById(memberId);
    }


}

 

Test

MemberServiceTest.class

매 테스트 마다

repository를 만들어주고 memberService에

넣어줘서 한 테스트에 각기 다른 객체를 이용할 수 있다.

 

그리고 AfterEach를 통해 각 테스트 후에 clear을 해주므로

static한 hashMap이 클리어되어 이후 새로운 MemeryMemberRepository를 생성해도

static한 hasjMap은 비어 있게 된다.

package hello.hellospring.service;

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

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.*;

class MemberServiceTest {

    MemberService memberService;
    MemoryMemberRepository memberRepository;

    @BeforeEach
    public void beforeEach(){
        memberRepository = new MemoryMemberRepository();
        memberService = new MemberService(memberRepository);
    }



    @AfterEach
    public void afterEach(){
        memberRepository.clearStore();
    }

    @Test
    void 회원가입() {
        //given
        Member member = new Member();
        member.setName("spring");

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

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

    }

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

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

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

        assertThat(e.getMessage()).isEqualTo("이미 존재하는 회원입니다.");
//
//        try{
//            memberService.join(member2);
//            fail("예외가 발생해야 합니다");
//        } catch (IllegalStateException e){
//            assertThat(e.getMessage()).isEqualTo("이미 존재하는 회원입니다.");
//        }

        //then
    }


    @Test
    void findMembers() {
    }

    @Test
    void findOne() {
    }
}