인프런 커뮤니티 질문&답변

지민킴님의 프로필 이미지
지민킴

작성한 질문수

실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발

회원 기능 테스트

MemberServiceTest 중 MemberService NullpointException

해결된 질문

23.12.09 18:38 작성

·

363

0


[질문 템플릿]
1. 강의 내용과 관련된 질문인가요? (예)
2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예)
3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예)

[질문 내용]
여기에 질문 내용을 남겨주세요.

MemberServiceTest 중 하기 에러가 발생합니다.


java.lang.NullPointerException: Cannot invoke "jpabook.jpashop.service.MemberService.join(jpabook.jpashop.domain.Member)" because "this.memberService" is null
	at jpabook.jpashop.service.MemberServiceTest.join(MemberServiceTest.java:27)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
	at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:42)
	at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:80)
	at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:72)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)
	at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:119)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:94)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:89)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
	at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)

MemberService

package jpabook.jpashop.service;

import java.util.List;
import jpabook.jpashop.domain.Member;
import jpabook.jpashop.repository.MemberRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@Transactional
@RequiredArgsConstructor
public class MemberService {

    private final MemberRepository memberRepository;

    /**
     * 회원 가입
     */
    public Long join(Member member) {
        validateDuplicateMember(member); // 중복 회원 검증
        memberRepository.save(member);
        return member.getId();
    }

        private void validateDuplicateMember(Member member) {
        List<Member> findMembers = memberRepository.findByName(member.getName());
        if (!findMembers.isEmpty()) {
            throw new IllegalStateException("이미 존재하는 회원입니다.");
        }
    }

    // 회원 전체 조회
    public List<Member> findMembers() {
        return memberRepository.findAll();
    }

    public Member findOne(Long memberId) {
        return memberRepository.fineOne(memberId);
    }
}


MemberServiceTest

package jpabook.jpashop.service;

import static org.junit.jupiter.api.Assertions.*;

import jpabook.jpashop.domain.Member;
import jpabook.jpashop.repository.MemberRepository;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.transaction.annotation.Transactional;

@SpringBootTest
@Transactional
public class MemberServiceTest {

    @Autowired
    MemberService memberService;

    @Autowired
    MemberRepository memberRepository;

    @Test
    public void join() {
        Member memberTestName = new Member();
        memberTestName.setName("kimjimin");

        Long savedId = memberService.join(memberTestName);

        assertEquals(memberTestName, memberRepository.fineOne(savedId));
    }
}
javaspring웹앱spring-bootjpa

답변 2

0

OMG님의 프로필 이미지
OMG

2023. 12. 11. 00:44

안녕하세요. ckwkek님, 공식 서포터즈 OMG입니다.

Junit4 스프링테스트에서는 @RunWith(SpringRunner.class)

를 추가해주셔야합니다 😀

image

추가하면 스프링 빈의 주입이 정상적으로 되어 NPE는 발생하지 않을꺼에요 ^^

감사합니다.

0

codesweaver님의 프로필 이미지
codesweaver

2023. 12. 09. 19:59

안녕하세요. ckwkek님, 공식 서포터즈 코즈위버입니다.

도움을 드리고 싶지만 질문 내용만으로는 답변을 드리기 어렵습니다.

실제 동작하는 전체 프로젝트를 압축해서 구글 드라이브로 공유해서 링크를 남겨주세요.

구글 드라이브 업로드 방법은 다음을 참고해주세요.

https://bit.ly/3fX6ygx


주의: 업로드시 링크에 있는 권한 문제 꼭 확인해주세요


추가로 다음 내용도 코멘트 부탁드립니다.

1. 문제 영역을 실행할 수 있는 방법

2. 문제가 어떻게 나타나는지에 대한 상세한 설명


링크: 공식 서포터즈

링크: 자주하는 질문

감사합니다.

지민킴님의 프로필 이미지
지민킴
질문자

2023. 12. 10. 22:12

https://drive.google.com/file/d/1mDfMezOsRioioCMIL4d4rbkObmbEnonH/view?usp=sharing

드라이브 링크 드립니다. 감사합니다.

MemberServiceTest 실행 시 nullpointexception이 발생합니다.

지민킴님의 프로필 이미지
지민킴

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