英文:
spring bean is null in mockito test
问题
以下是您提供的代码部分的中文翻译：
我正在使用 Spring 5 和 Mockito，但在测试过程中，我遇到了一个问题，我的 **bean** 变成了 **null**，然后我得到了一个 NullPointerException，我该如何修复这个问题？
实际上，我的 SpringContext.getBean 返回 null，但当应用程序处于运行时模式时，它却可以正常工作。
java.lang.NullPointerException
at com.novinkish.batch.ParallerMakerTest.testSendData(ParallerMakerTest.java:53)
.
.
Caused by: java.lang.NullPointerException
at com.novinkish.batch.util.SpringContext.getBean(SpringContext.java:14)
我的测试类如下所示：
@RunWith(MockitoJUnitRunner.class)
public class ParallerMakerTest {
@Mock
private CommonRestCallerImpl restCallerImpl;
@Test
public void testSendData(){
PersonDTO personDTO_1 = new PersonDTO("1111111111", "name_1", "L_name_1", "2000/05/09", (short) 0);
PersonDTO personDTO_2 = new PersonDTO(4646L, "1111111111", "name_1", "L_name_1", "2000/05/09", (short) 1);
List<PersonDTO> resultDtoList = new ArrayList<PersonDTO>();
try {
when(restCallerImpl.callService(ServiceNameJNDI.SAVE_PERSON, personDTO_1, PersonDTO.class)).thenReturn(personDTO_2);
} catch (Exception e) {
e.printStackTrace();
}
ForkJoinPool pool = new ForkJoinPool();
PersonSessionParallerMaker maker = new PersonSessionParallerMaker(restCallerImpl, Arrays.asList(personDTO_1));
pool.execute(maker);
try {
pool.awaitTermination(3, TimeUnit.SECONDS);
} catch (InterruptedException e) {
e.printStackTrace();
}
resultDtoList = (List<PersonDTO>) pool.invoke(maker);
Assert.assertNotNull(resultDtoList);
Assert.assertEquals(1, ((PersonDTO)resultDtoList.get(0)).getStatus().intValue());
}
}
而我的类如下所示：
public class PersonSessionParallerMaker extends RecursiveTask {
private CommonRestCaller restCaller;
private List<PersonDTO> initList = new ArrayList<PersonDTO>();
private List<PersonDTO> resultList = new ArrayList<PersonDTO>();
private PersonDTO target;
public PersonSessionParallerMaker(CommonRestCaller restCaller, List<PersonDTO> initList) {
this.initList = initList;
this.restCaller = restCaller;
}
public PersonSessionParallerMaker(PersonDTO target) {
this.target = target;
}
@Override
protected Object compute() {
/*MASTER 线程*/
if (target == null) {
for (PersonDTO personDTO : initList) {
/*创建 FORK（子线程）*/
PersonSessionParallerMaker parallerMaker = new PersonSessionParallerMaker(personDTO);
invokeAll(parallerMaker);
resultList.add((PersonDTO) parallerMaker.join());
}
return resultList;
} else if (target.getStatus() == 0) {
callService();
return target;
} else
return null;
}
public void callService() {
System.out.println("1.restCaller = " + restCaller);
/*对单元测试*/
if (restCaller == null) {
System.out.println("2.restCaller = " + restCaller);
restCaller = (CommonRestCaller) SpringContext.getBean(CommonRestCallerImpl.class);
System.out.println("3.restCaller = " + restCaller);
}
try {
System.out.println("target.toString() = " + target.toString());
target = (PersonDTO) restCaller.callService(ServiceNameJNDI.SAVE_PERSON, target, PersonDTO.class);
} catch (Exception e) {
e.printStackTrace();
target.setStatus((short) 2);
}
}
}
请注意，我只翻译了您提供的代码部分，不包括您的问题描述。
英文:
I'm using spring 5 and mockito, but in a test process i have a problem where my bean is done null and i get a NullPointerException, how can i fix it?
infact, my SpringContext.getBean returns null but it work correctly when the application is in runtime mode.
java.lang.NullPointerException
at com.novinkish.batch.ParallerMakerTest.testSendData(ParallerMakerTest.java:53)
.
.
Caused by: java.lang.NullPointerException
at com.novinkish.batch.util.SpringContext.getBean(SpringContext.java:14)
my test class is like this:
@RunWith(MockitoJUnitRunner.class)
public class ParallerMakerTest {
@Mock
private CommonRestCallerImpl restCallerImpl;
@Test
public void testSendData(){
PersonDTO personDTO_1 = new PersonDTO("1111111111", "name_1", "L_name_1", "2000/05/09", (short) 0);
PersonDTO personDTO_2 = new PersonDTO(4646L, "1111111111", "name_1", "L_name_1", "2000/05/09", (short) 1);
List<PersonDTO> resultDtoList = new ArrayList<PersonDTO>();
try {
when(restCallerImpl.callService(ServiceNameJNDI.SAVE_PERSON, personDTO_1, PersonDTO.class)).thenReturn(personDTO_2);
} catch (Exception e) {
e.printStackTrace();
}
ForkJoinPool pool = new ForkJoinPool();
PersonSessionParallerMaker maker = new PersonSessionParallerMaker(restCallerImpl, Arrays.asList(personDTO_1));
pool.execute(maker);
try {
pool.awaitTermination(3, TimeUnit.SECONDS);
} catch (InterruptedException e) {
e.printStackTrace();
}
resultDtoList = (List<PersonDTO>) pool.invoke(maker);
Assert.assertNotNull(resultDtoList);
Assert.assertEquals(1, ((PersonDTO)resultDtoList.get(0)).getStatus().intValue());
}
and my class is:
public class PersonSessionParallerMaker extends RecursiveTask {
private CommonRestCaller restCaller;
private List<PersonDTO> initList = new ArrayList<PersonDTO>();
private List<PersonDTO> resultList = new ArrayList<PersonDTO>();
private PersonDTO target;
public PersonSessionParallerMaker(CommonRestCaller restCaller, List<PersonDTO> initList) {
this.initList = initList;
this.restCaller = restCaller;
}
public PersonSessionParallerMaker(PersonDTO target) {
this.target = target;
}
@Override
protected Object compute() {
/*MASTER Thread*/
if (target == null) {
for (PersonDTO personDTO : initList) {
/*CREATE FORK (SUB THREAD)*/
PersonSessionParallerMaker parallerMaker = new PersonSessionParallerMaker(personDTO);
invokeAll(parallerMaker);
resultList.add((PersonDTO) parallerMaker.join());
}
return resultList;
} else if (target.getStatus() == 0) {
callService();
return target;
} else
return null;
}
public void callService() {
System.out.println("1.restCaller = " + restCaller);
/*For Unit Test*/
if (restCaller == null) {
System.out.println("2.restCaller = " + restCaller);
restCaller = (CommonRestCaller) SpringContext.getBean(CommonRestCallerImpl.class);
System.out.println("3.restCaller = " + restCaller);
}
try {
System.out.println("target.toString() = " + target.toString());
target = (PersonDTO) restCaller.callService(ServiceNameJNDI.SAVE_PERSON, target, PersonDTO.class);
} catch (Exception e) {
e.printStackTrace();
target.setStatus((short) 2);
}
}
}
答案1
得分: 0
你在这里混淆了单元测试和集成测试。
你所编写的是一个单元测试。单元测试根据定义是与整个应用程序隔离运行的，因此您无法访问应用程序上下文。单元测试的目的是测试一个特定的类。
如果你想测试整个应用程序的行为，你需要编写一个集成测试。
请参阅 https://www.baeldung.com/spring-boot-testing#integration-testing-with-springboottest 获取更多信息。
英文:
You are mixing up unit testing and integration testing here.
What you have written, is a unit test. Unit tests run - per definiton - isolated from the whole application, therefore you have no access to the application context. The purpose of a unit test is to test one specific class.
If you want to test the behaviour of your whole application, you have to write an integration test.
See https://www.baeldung.com/spring-boot-testing#integration-testing-with-springboottest for further reading.
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