[스프링 입문] 회원 서비스 개발, 테스트

service 패키지에 MemberService 클래스 생성

 

*MemberService

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;

    public MemberService(MemberRepository memberRepository) {
        this.memberRepository = memberRepository;
    }

    /*회원가입*/
    public Long join(Member member) {
        //같은 이름 중복 회원 X
        //중복 회원 검증
        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.");
        });
    }

    /*전체 회원 조회*/

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

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

 

 

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Ctrl+Shift+T로 간편하게 테스트 클래스 생성 

 

test 아래에 service 패키지가 생성되고 MemberServiceTest 클래스 생성됨.

 

*MemberServiceTest

package hello.hello_spring.service;

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

import static org.assertj.core.api.AssertionsForClassTypes.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 join() {
        //given
        Member member = new Member();
        member.setName("hello");

        //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.");
/*
        memberService.join(member1);
        try {
            memberService.join(member2);
            fail();
        } catch (IllegalStateException e) {
            assertThat(e.getMessage()).isEqualTo("이미 존재하는 회원입니다.");
        }
*/

        //then

    }
    @Test
    void findMembers() {

    }

    @Test
    void findOne() {

    }
}

 

 

*MemoryMemberRepositoryTest

package hello.hello_spring.repository;

import hello.hello_spring.domain.Member;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import java.util.List;

import static org.assertj.core.api.Assertions.assertThat;

class MemoryMemberRepositoryTest {

    MemoryMemberRepository repository = new MemoryMemberRepository();

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

    @Test
    public void save(){
        Member member = new Member();
        member.setName("spring");
        repository.save(member);

        Member result = repository.findById(member.getId()).get();
        assertThat(member).isEqualTo(result);
    }

    @Test
    public void findByName(){
        Member member1 = new Member();
        member1.setName("spring1");
        repository.save(member1);

        Member member2 = new Member();
        member2.setName("spring2");
        repository.save(member2);

        Member result = repository.findByName("spring1").get();

        assertThat(result).isEqualTo(member1);
    }

    @Test
    public void findAll(){
        Member member1 = new Member();
        member1.setName("spring1");
        repository.save(member1);

        Member member2 = new Member();
        member2.setName("spring2");
        repository.save(member2);

        List<Member> result = repository.findAll();

        assertThat(result.size()).isEqualTo(3);
    }
}

 

 

김영한 강사님의 '스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술'을 듣고 정리한 것입니다.