[Spring] 입문_스프링 통합테스트(Spring+DB)

스프링 컨테이너와 DB가 연결된 것을 테스트 -> 통합테스트

스프링 통합테스트_MemberServiceIntegrationTest

package hello.hellospring.service;

import hello.hellospring.domain.Member;
import hello.hellospring.repository.MemberRepository;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.transaction.annotation.Transactional;

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

@SpringBootTest
@Transactional
class MemberServiceIntegrationTest {

    @Autowired MemberService memberService;
    @Autowired MemberRepository memberRepository;

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

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

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

    @Test
    public void 중복회원예약() {
        // 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!");


    }
}

• @SpringBootTest
  • 스프링 컨테이너와 테스트를 함께 실행시킴
• @Transactional
  • 테스트 케이스에 @Transactional를 붙이면, 테스트 시작 전에 트랜잭션을 시작하고, 테스트 완료 후에 항상 rollback함
  • 만약 rollback하지 않으려면 @Commit을 붙이면 됨
  • @Transactional 작성하면 DB에 데이터가 남지 않아 다음 테스트에 영향을 미치지 않음(id숫자는 계속 올라감)