JUnit / Mockito测试用例在调试模式下传递，但不在运行模式下传递

Question

我正在使用以下方法来测试项目中的配置文件对象更新。

import org.apache.commons.collections.MapUtils;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.runners.MockitoJUnitRunner;
import org.mockito.stubbing.Answer;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;

import java.math.BigInteger;
import java.util.*;
import java.util.concurrent.Callable;


@RunWith(MockitoJUnitRunner.class)
@PrepareForTest({TxUtils.class})
public class MonitoringProfileServicesImplTest extends MonitoringProfileServicesImpl {

    private MutableDataObject mutableDataObject = Mockito.mock(MutableDataObject.class);

    @Mock
    private PersistenceContext<MutableDataObject> persistenceContext;

    @Mock
    PersistenceContextHelper persistenceContextHelper;

    @Mock
    MonitoringDao monitoringDao;

    @InjectMocks
    private MonitoringProfileServicesImpl service;

    private BigInteger profileId;

    private Map<String, BigInteger> attributeNameIdMap;

    private Map<BigInteger, String> invAttributeNameIdMap;

    ResponseBean responseBean = new ResponseBean();


    @Before
    public void setUp() {
        Mockito.when(persistenceContextHelper.getLocalPersistenceContext()).thenReturn(persistenceContext);

        profileId = BigInteger.valueOf(Long.valueOf(1L));

        attributeNameIdMap = new HashMap<String, BigInteger>();
        invAttributeNameIdMap = new HashMap<BigInteger, String>();
        attributeNameIdMap.put("key", BigInteger.valueOf(1111L));
        invAttributeNameIdMap = MapUtils.invertMap(attributeNameIdMap);
    }


 @Test

public void testXXXX() {
        MonitoringProfile monitoringProfile =  getDummyMonitoringProfileToBeCreated();

    TransactionServicePALImpl transactionImpl = Mockito.mock(TransactionServicePALImpl.class);
    Mockito.when(transactionImpl.getTM()).thenReturn(new TransactionManagerImplTest());


    Mockito.when(mutableDataObject.getId()).thenReturn(BigInteger.valueOf(1000));
    Mockito.when(mutableDataObject.getName()).thenReturn("Name");

    Mockito.when(persistenceContext.getObjectById(Mockito.any(BigInteger.class))).thenReturn(mutableDataObject);
    Mockito.when(monitoringDao.getAttributeIdsForObjectType(Mockito.any(BigInteger.class))).thenReturn(invAttributeNameIdMap);

    TxUtils mock = PowerMockito.mock(TxUtils.class);
    System.out.println("newresponseBean:::");



        PowerMockito.when(mock.doTxRequired(new Callable<Object>() {
            @Override
            public Object call() throws Exception {

                return this;
            }

        })).thenAnswer(new Answer<ResponseBean>() {
            @Override
            public ResponseBean answer(InvocationOnMock invocation) throws Throwable {

                responseBean.setResultObj(monitoringProfile);
                return responseBean;
            }
        });


    ResponseBean newresponseBean = service.updateMonitoringProfile(monitoringProfile, BigInteger.valueOf(1000));
    Assert.assertNotNull(newresponseBean);
    Assert.assertNotNull(newresponseBean.getResultObj());
    Assert.assertNull(newresponseBean.getErrorObj());
}

    }   

**在运行模式下，它在下一行失败

PowerMockito.when(mock.doTxRequired(new Callable<Object>().....

在调试模式下，它工作正常。**

以下是服务方法代码;

public ResponseBean updateMonitoringProfile(@RequestBody MonitoringProfile profileToUpdate) {         
        ResponseBean responseBean = TxUtils.doTxRequired(() -> {
            ResponseBean response = new ResponseBean();
            try {
                PersistenceContext<MutableDataObject> localPersistenceContext = persistenceContextHelper.getLocalPersistenceContext();
                MutableDataObject monitoringProfile = localPersistenceContext.getObjectById(profileToUpdate.getId());
                ParamsBuilder paramsBuilder = populateProfileParameterValues(profileToUpdate, monitoringProfile).build();
                localPersistenceContext.flush();
                response.setResultObj(profileToUpdate);
            } catch (NotUpdatedException notUpdatedEx) {
                notUpdatedEx.printStackTrace();
            }
            return response;
        });
        return responseBean;
    }

我们在运行模式下运行时遇到异常;

newresponseBean:::

org.mockito.exceptions.misusing.MissingMethodInvocationException: 
when() requires an argument which has to be 'a method call on a mock'.
For example:
    when(mock.getArticles()).thenReturn(articles);

Also, this error might show up because:
1. you stub either of: final/private/equals()/hashCode() methods.
   Those methods cannot be stubbed/verified.
   Mocking methods declared on non-public parent classes is not supported.
2. inside when() you don't call method on mock but on some other object.


 at org.powermock.api.mockito.PowerMockito.when(PowerMockito.java:495) 
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:483)
 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
 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$2.evaluate(ParentRunner.java:268)
 at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
 at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
 at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
 at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
 at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
 at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
 at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)
 at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:483)
 at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)


Process finished with exit code -1

Answer 1

如果您的观察结果是真实的，并且在“调试”模式下单步执行测试用例时不会遇到此问题; 但是在正常运行测试时它是稳固的，那么它必然是某种时序问题。

我想在你的测试代码中你有同步语句这一点表明你在这里没有显示的某些代码将使用多个线程？！

因此，鉴于我们无法瑞普这个问题; 这是我建议你研究的部分。

除此之外：你得到的“模拟规范”部分是错误的 。 您想要告诉您的环境， 当使用某个参数调用静态方法mock.doTxRequired（）时，应该发生这种情况。

换句话说：在when（）子句中提供新创建的对象没有意义。 相反：如果在运行时传递的参数等于您在when（）子句中指定的对象，则模拟框架将在运行时检查！ 因为你没有在你的匿名内部类中实现equals ... PowerMock 永远不会确定使用该Object调用了mock。

换句话说：你可能想要使用一些等于将在运行时传递的对象; 或者你使用像“any（）”这样的参数匹配器（详见这里 ）。

只是为了记录：如果你有可能考虑不使用静态方法调用并避免使用PowerMock。

Answer 2

我有同样的问题。 它在运行测试时随机失败，但在调试时总是通过。

问题是我的测试类是从基础测试类继承的，我在这两个类中都模拟了相同的服务。 删除子类中的模拟后，一切都修复了