在类的@InjectMocks期间获取错误
在类的@InjectMocks期间获取错误
提问于 2020-03-05 21:24:13
这是一个服务类的服务层测试，但是当我在这个类上使用@InjectMocks时，我得到了一个错误，测试pom是使用Spring Boot的Spring测试的2.2.4版本。获取misusing.InjectMocksException的错误
RunWith(MockitoJUnitRunner.class)
public class JobManagerServiceTest {
private final String categoryFullPathId = "Main/Alexa Skills/For Your Smart Home";
private final String vendorId = "vendor5";
private final String filters = "filters12";
private final Long frequency = 50000L;
@InjectMocks
JobManagerService jobManagerService;
@Mock
private ScrapperService scrapperService;
@Mock
private AppConfiguration config;
@Mock
private SlackClient slackClient;
private ExecutorService executor;
private BlockingQueue<Category> jobQueue = new LinkedBlockingQueue<>();
}
@Service @Slf4j public class JobManagerService { private ScrapperService scrapperService;
private AppConfiguration config;
private ExecutorService executor;
private SlackClient slackClient;
private BlockingQueue<Category> jobQueue = new LinkedBlockingQueue<>();
@Autowired
public JobManagerService(AppConfiguration config, ScrapperService scrapperService, SlackClient slackClient) {
this.config = config;
this.scrapperService = scrapperService;
this.slackClient = slackClient;
this.executor = Executors.newFixedThreadPool(this.config.threadPoolSize);
}
}//错误
org.mockito.exceptions.misusing.InjectMocksException:无法实例化类型为“com.scrapper.jobmanager.service.JobManagerService'.”的名为“jobManagerService”的@InjectMock字段您还没有在字段声明中提供实例，所以我尝试构造实例。但是，构造函数或初始化块引发了异常: null
at org.mockito.internal.runners.DefaultInternalRunner$1$1.evaluate(DefaultInternalRunner.java:43)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.mockito.internal.runners.DefaultInternalRunner$1.run(DefaultInternalRunner.java:74)
at org.mockito.internal.runners.DefaultInternalRunner.run(DefaultInternalRunner.java:80)
at org.mockito.internal.runners.StrictRunner.run(StrictRunner.java:39)
at org.mockito.junit.MockitoJUnitRunner.run(MockitoJUnitRunner.java:163)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Caused by: java.lang.IllegalArgumentException
at java.util.concurrent.ThreadPoolExecutor.<init>(ThreadPoolExecutor.java:1314)
at java.util.concurrent.ThreadPoolExecutor.<init>(ThreadPoolExecutor.java:1202)
at java.util.concurrent.Executors.newFixedThreadPool(Executors.java:89)
at com.scrapper.jobmanager.service.JobManagerService.<init>(JobManagerService.java:39)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.mockito.internal.util.reflection.FieldInitializer$ParameterizedConstructorInstantiator.instantiate(FieldInitializer.java:269)
at org.mockito.internal.util.reflection.FieldInitializer.acquireFieldInstance(FieldInitializer.java:137)
at org.mockito.internal.util.reflection.FieldInitializer.initialize(FieldInitializer.java:91)
at org.mockito.internal.configuration.injection.ConstructorInjection.processInjection(ConstructorInjection.java:46)
at org.mockito.internal.configuration.injection.MockInjectionStrategy.process(MockInjectionStrategy.java:68)
at org.mockito.internal.configuration.injection.MockInjectionStrategy.relayProcessToNextStrategy(MockInjectionStrategy.java:89)
at org.mockito.internal.configuration.injection.MockInjectionStrategy.process(MockInjectionStrategy.java:71)
at org.mockito.internal.configuration.injection.MockInjection$OngoingMockInjection.apply(MockInjection.java:92)
at org.mockito.internal.configuration.DefaultInjectionEngine.injectMocksOnFields(DefaultInjectionEngine.java:25)
at org.mockito.internal.configuration.InjectingAnnotationEngine.injectMocks(InjectingAnnotationEngine.java:79)
at org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAnnotationEngine.java:42)
at org.mockito.MockitoAnnotations.initMocks(MockitoAnnotations.java:69)
... 19 more提前感谢
回答 3
Stack Overflow用户
发布于 2020-03-06 01:46:38
@InjectMocks会立即使用默认的模拟方法调用构造函数。我认为this.config.threadPoolSize不能在那里工作，因为你不能存根一个字段。您应该在那里使用getter：
public JobManagerService(...) {
...
this.executor = Executors.newFixedThreadPool(this.config.getThreadPoolSize());
}然后，您需要在调用构造函数之前将getter存根。如果您使用@InjectMocks，则无法做到这一点，只有在使用setup方法初始化测试服务时才能做到这一点：
@Mock
private ScrapperService scrapperService;
@Mock
private AppConfiguration config;
@Mock
private SlackClient slackClient;
JobManagerService jobManagerService;
@Before
public void setup() throws IOException {
when(config.getThreadPoolSize()).thenReturn(5);
jobManagerService=new JobManagerService(config, scrapperService, slackClient)
}Stack Overflow用户
发布于 2020-03-09 13:57:21
我只是换了一下，现在是工作了
@PostConstruct
public void init(){
this.executor = Executors.newFixedThreadPool(this.config.threadPoolSize);
}Stack Overflow用户
发布于 2020-03-05 23:47:19
试试这个：
@RunWith(SpringRunner.class)
public class JobManagerServiceTest {
private final String categoryFullPathId = "Main/Alexa Skills/For Your Smart Home";
private final String vendorId = "vendor5";
private final String filters = "filters12";
private final Long frequency = 50000L;
private JobManagerService jobManagerService;
@MockBean
private ScrapperService scrapperService;
@MockBean
private AppConfiguration config;
@MockBean
private SlackClient slackClient;
private ExecutorService executor;
private BlockingQueue<Category> jobQueue = new LinkedBlockingQueue<>();
@Test
public void test()
{
this.jobManager Service = new JobManagerService(config, scrapperService, slackClient);
}
}它不是在类级别上，但应该可以工作。虽然我没有时间去尝试。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/60546417
复制相关文章
相似问题
腾讯云开发者
