싱글톤인데 다른 인스턴스가 조회되는 이유는 뭘까요?

싱글톤 테스트를 했는데요

findByName()에서 생성한 memberService1, memberService2는 같은 인스턴스가 조회가 됩니다.

그런데 findByType에서 생성한 memberService는 memberService1, memberService2와 다른 인스턴스가 조회 됩니다.

AnnotationConfigApplicationContext ac = new AnnotationConfigApplicationContext(AppConfig.class);

는 한번 선언됬는데.....테스트라서 그런가요?

@Test
@DisplayName("빈 이름으로 조회")
public void findByName(){
  MemberService memberService1 = ac.getBean("memberService", MemberService.class);
  System.out.println("memberService1 = " + memberService1);
  System.out.println("memberService1.getClass() = " + memberService1.getClass());
  assertThat(memberService1).isInstanceOf(MemberService.class);

  MemberService memberService2 = ac.getBean("memberService", MemberService.class);
  System.out.println("memberService2 = " + memberService2);
  System.out.println("memberService2.getClass() = " + memberService2.getClass());
  assertThat(memberService2).isInstanceOf(MemberService.class);

  assertThat(memberService1).isSameAs(memberService2);
}
@Test
@DisplayName("빈 타입으로 조회")
public void fineByType(){
  MemberService memberService = ac.getBean(MemberService.class);
  System.out.println("memberService = " + memberService);
  System.out.println("memberService.getClass() = " + memberService.getClass());
  assertThat(memberService).isInstanceOf(MemberService.class);
}