강의

N
챌린지

멘토링

N
클립

커뮤니티

인프런 커뮤니티 질문&답변

installjung님의 프로필 이미지
installjung

작성한 질문수

실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발

회원 기능 테스트

MemberServiceTest 디버깅 오류관련

작성

·

762

0

제 코드에 문제가 있나 싶어서 강의자료에 있는 코드를 그대로 가져와서 실행을 해보았는데도 

테스트가 계속 실패하게 됩니다...

혹시 원인을 알수 있을까요??

오류코드

java.lang.Exception: Unexpected exception, expected<java.lang.IllegalStateException> but was<java.lang.NullPointerException>

 

at org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:30)

at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)

at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)

at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)

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.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)

at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)

at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)

at org.junit.runners.ParentRunner.run(ParentRunner.java:413)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)

at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)

at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:221)

at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)

Caused by: java.lang.NullPointerException: Cannot invoke "javax.persistence.EntityManager.createQuery(String, java.lang.Class)" because "this.em" is null

at jpabook.jpashop.repository.MemberRepository.findByName(MemberRepository.java:33)

at jpabook.jpashop.repository.MemberRepository$$FastClassBySpringCGLIB$$97f1c501.invoke(<generated>)

at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)

at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)

at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691)

at jpabook.jpashop.repository.MemberRepository$$EnhancerBySpringCGLIB$$81016634.findByName(<generated>)

at jpabook.jpashop.service.MemberService.validateDuplicateMember(MemberService.java:33)

at jpabook.jpashop.service.MemberService.join(MemberService.java:26)

at jpabook.jpashop.service.MemberService$$FastClassBySpringCGLIB$$560b731b.invoke(<generated>)

at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)

at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123)

at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)

at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691)

at jpabook.jpashop.service.MemberService$$EnhancerBySpringCGLIB$$41ee91e0.join(<generated>)

at jpabook.jpashop.service.MemberServiceTest.중복_회원_예외(MemberServiceTest.java:48)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:564)

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.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)

at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)

at org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:19)

----------------------------------------------------

java.lang.NullPointerException: Cannot invoke "javax.persistence.EntityManager.createQuery(String, java.lang.Class)" because "this.em" is null

 

at jpabook.jpashop.repository.MemberRepository.findByName(MemberRepository.java:33)

at jpabook.jpashop.repository.MemberRepository$$FastClassBySpringCGLIB$$97f1c501.invoke(<generated>)

at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)

at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)

at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691)

at jpabook.jpashop.repository.MemberRepository$$EnhancerBySpringCGLIB$$81016634.findByName(<generated>)

at jpabook.jpashop.service.MemberService.validateDuplicateMember(MemberService.java:33)

at jpabook.jpashop.service.MemberService.join(MemberService.java:26)

at jpabook.jpashop.service.MemberService$$FastClassBySpringCGLIB$$560b731b.invoke(<generated>)

at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)

at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123)

at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)

at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691)

at jpabook.jpashop.service.MemberService$$EnhancerBySpringCGLIB$$41ee91e0.join(<generated>)

at jpabook.jpashop.service.MemberServiceTest.회원가입(MemberServiceTest.java:33)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:564)

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.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)

at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)

at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)

at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)

at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)

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.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)

at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)

at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)

at org.junit.runners.ParentRunner.run(ParentRunner.java:413)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)

at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)

at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:221)

at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)

 

 

소스코드

package jpabook.jpashop.service;
import jpabook.jpashop.domain.Member;
import jpabook.jpashop.repository.MemberRepository;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.annotation.Rollback;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.transaction.annotation.Transactional;

import javax.persistence.EntityManager;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

@RunWith(SpringRunner.class)
@SpringBootTest
@Transactional
public class MemberServiceTest {

    @Autowired MemberService memberService;
    @Autowired MemberRepository memberRepository;
    @Autowired EntityManager em;

    @Test

    public void 회원가입() throws Exception {
        //Given
        Member member = new Member();
        member.setName("kim");
        //When
        Long saveId = memberService.join(member);
        //Then
        assertEquals(member, memberRepository.findOne(saveId));
    }


    @Test(expected = IllegalStateException.class)
    public void 중복_회원_예외() throws Exception {
        //Given
        Member member1 = new Member();
        member1.setName("kim");

        Member member2 = new Member();
        member2.setName("kim");
        //When
        memberService.join(member1);
        memberService.join(member2);

        //Then
        fail("예외가 발생해야 한다.");
    }
}


JPAjavaspring-boot웹앱spring

답변 1

1

OMG님의 프로필 이미지
OMG

안녕하세요. installjung님, 공식 서포터즈 OMG입니다.

코드 일부만으로는 확인이 어려워 올리신 에러메시지에서 주는 힌트를 설명드릴테니 확인 부탁드립니다.

java.lang.Exception: Unexpected exception, expected<java.lang.IllegalStateException> but was<java.lang.NullPointerException>

테스트에서 예상한 IllegalStateException이 아닌 NullPointerException이 발생하여 테스트가 실패했다고 합니다.

 

Caused by: java.lang.NullPointerException: Cannot invoke "javax.persistence.EntityManager.createQuery(String, java.lang.Class)" because "this.em" is null

 

at jpabook.jpashop.repository.MemberRepository.findByName(MemberRepository.java:33)

NullPointer가 발생한 지점은 createQuery메서드를 실행한 findByName이라고 하며 Null은 em이라고 합니다.

em은 @PersistenceContext가 없거나 주입받지 못하는 상황으로 보이니 확인 해보시고 확인이 어려울 경우 댓글남겨주세요

 


감사합니다.

installjung님의 프로필 이미지
installjung

작성한 질문수

전체 Q&A
질문하기