[ 회원 관리 예제 - 백엔드 개발 ] 회원 서비스 테스트

🙂강의🙂

https://www.inflearn.com/course/%EC%8A%A4%ED%94%84%EB%A7%81-%EC%9E%85%EB%AC%B8-%EC%8A%A4%ED%94%84%EB%A7%81%EB%B6%80%ED%8A%B8

[무료] 스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술 - 인프런 | 강의

 

💡 Ctrl + Shift + T : 테스트 쉽게 만들기 (윈도우)

 

[ MemberService 변경 ]

...
public class MemberService {

    private final MemberRepository memberRepository;
    // 외부에서 넣어주기
    public MemberService(MemberRepository memberRepository) {
        this.memberRepository = memberRepository;
    }
		...
}

 

[ MemberServiceTest ]

package hello.hellospring.service;

import hello.hellospring.domain.Member;
import hello.hellospring.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.Test;

import static org.assertj.core.api.Assertions.*;
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("hello");

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

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

    @Test
    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) {
              Assertions.assertThat(e.getMessage()).isEqualTo("이미 존재하는 회원입니다.");
          }
*/    }

    @Test
    void findMembers() {
    }

    @Test
    void findOne() {
    }
}

➡️ @BeforeEach

    → 각 테스트 실행 전 호출

    → 테스트 간 영향이 없도록 항상 새로운 객체 생성

    → 새로운 의존관계 형성