findAll

테스트 끝나고나서 데이터를 클리어해주는 방법을 설명하시기 전에 findAll()함수에서 오류가 나타나야 하는데 전 왜.. 다 초록불이 뜰까요

package com.example.hello_spring.repository;

import com.example.hello_spring.domain.Member;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Test;

import java.util.List;
import java.util.Optional;

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

public class MemoryMemberRepositoryTest {
    MemberRepository repository = new MemoryMemberRepository();

    @Test //실행할 수 있게함
    public void save() {
        Member member = new Member();
        member.setName("spring");

        repository.save(member);

        Member result = repository.findById(member.getId()).get();
        //Assertions.assertEquals(result, member); // result와 member가 같은지 확인
        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("spring");
        repository.save(member1);

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

        List<Member> result = repository.findAll();
        assertThat(result.size()).isEqualTo(2);
    }
}