중복 회원 예외에서 에러가 나는거 같은데요.. 문의 드립니당.

package hello.hellospring.service;

import hello.hellospring.domain.Member;
import hello.hellospring.repositoroy.MemberRepository;
import hello.hellospring.repositoroy.MemoryMemberRepository;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
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
public 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();
        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 회원 입니다.");

    }
}