Spring 사용하기 (Coupon_check 백엔드(6-2) - DB 테스트코드)

@SpringBootTest
@Transactional
public class MemberServiceIntegrationTest {
    @Autowired MemberService memberService;
    @Autowired Repository repository;
    @Test
    void join() {
        //given
        Member member  = new Member();
        member.setName("goat1");
        //when
        Long saveId = memberService.join(member);
        //then
        Member findMember = memberService.findOne(member.getId()).get(); //Optional로 반환되는거 get으로 member를 꺼냄
        Assertions.assertThat(member.getName()).isEqualTo(findMember.getName());
    }

    @Test
    void 중복_회원_예외(){
        //given
        Member member1 = new Member();
        Member member2 = new Member();

        member1.setName("goat1");
        member2.setName("goat1");
        //when
        memberService.join(member1);
        IllegalStateException msg = assertThrows(IllegalStateException.class, () -> memberService.join(member2));
        Assertions.assertThat(msg.getMessage()).isEqualTo("이미 존재하는 회원입니다.");
        //        try{
//            memberService.join(member2);
//            fail();
//        }catch(IllegalStateException e ){
//            Assertions.assertThat(e.getMessage()).isEqualTo("이미 존재하는 회원입니다.1");
//        }

        //then

    }
    @Test
    void findMembers() {
    }

    @Test
    void findOne() {
    }
}

Memory를 활용한 Repository에서 @aftereach, @beforeeach를 활용하여 반복적인 test를 할 수 있었지만,
스프링 부트는 하지 않아도 된다.
이는 @Transactional 어노테이션 덕분이다. ->DB에 rollback을 하는 역할