java.lang.NoClassDefFoundError:带有Mockito的org/objenesis/ObjenesisStd

问题描述

我不知道为什么我的模拟错误

I don't know why I have that error with mockito

java.lang.NoClassDefFoundError: org/objenesis/ObjenesisStd
at org.mockito.internal.creation.jmock.ClassImposterizer.<init>(ClassImposterizer.java:36)
at org.mockito.internal.creation.jmock.ClassImposterizer.<clinit>(ClassImposterizer.java:29)
at org.mockito.internal.util.MockCreationValidator.isTypeMockable(MockCreationValidator.java:17)
at org.mockito.internal.util.MockCreationValidator.validateType(MockCreationValidator.java:21)
at org.mockito.internal.creation.MockSettingsImpl.validatedSettings(MockSettingsImpl.java:133)
at org.mockito.internal.creation.MockSettingsImpl.confirm(MockSettingsImpl.java:127)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:50)
at org.mockito.Mockito.mock(Mockito.java:1243)
at org.mockito.Mockito.mock(Mockito.java:1120)
at fr.oap.SubscriptionTest.testGetSubscriptionById(SubscriptionFactoryTest.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at junit.framework.TestCase.runTest(TestCase.java:176)
at junit.framework.TestCase.runBare(TestCase.java:141)
at junit.framework.TestResult$1.protect(TestResult.java:122)
at junit.framework.TestResult.runProtected(TestResult.java:142)
at junit.framework.TestResult.run(TestResult.java:125)
at junit.framework.TestCase.run(TestCase.java:129)
at junit.framework.TestSuite.runTest(TestSuite.java:255)
at junit.framework.TestSuite.run(TestSuite.java:250)
at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:84)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.ClassNotFoundException: org.objenesis.ObjenesisStd
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 29 more

关于我的测试班是这样的:

About my class of Test is like this :

import junit.framework.TestCase;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.Mockito;
import fr.aop.subscription.AbstractSubscription;
public class SubscriptionTest extends TestCase {
@Test
public void testGetSubscriptionById() {
    ArgumentCaptor<AbstractSubscription> 
arg=ArgumentCaptor.forClass(AbstractSubscription.class);        
     Subscription objMock=Mockito.mock(Subscription.class);        
    Mockito.when(objMock.getSubscribById(1)).thenReturn(arg.getValue());
}
}

关于getSubscribById whitch的方法位于Subscription类中:

And about the method getSubscribById whitch is in the class Subscription:

@Override
public AbstractSubscription getSubscriptionById(final Integer id) {
    this.log.debug("BEGIN: getSubscriptionById id = " + id);
    AbstractSubscription obj = null;
    if (id != null) {
        final StringBuilder queryString = new StringBuilder("select c from AbstractSubscription c ");

        try {
            queryString.append("where c.id = :id");
            Query query = this.getEntityManager().createQuery(queryString.toString());
            query = query.setParameter("id", id);
            obj = (AbstractSubscription) query.getSingleResult();
        } catch (final Exception exc) {

        }
    }
    return obj;
}

当我实例化Subcription类时，它要求我与数据库建立连接，这就是为什么我想逃避此问题并寻找诸如Mockito的解决方案

when I instanciate the Subcription class it demand me the connection to the database, that's why I want to escape this and looking for a solution like mockito

推荐答案

ClassNotFoundException是无法加载特定类的类加载器的结果.

ClassNotFoundException is result of a class loader that is not able to load a particular class.

在您的情况下，Mockito具有对Objenesis的传递依赖(它需要Objenesis才能确保正确的行为).您最有可能尝试在测试类路径上使用Mockito执行测试，但没有Objenesis.

In your case Mockito has a transitive dependency to Objenesis (it needs Objenesis for correct behavior). You are most likely trying to execute your test with Mockito on test class path, but without Objenesis.

您需要在测试类路径中添加Objenesis.

You need to add Objenesis to your test class path.

对于Maven项目，请确保:

For maven projects, be sure that:

1. 您已将Mockito声明为测试依赖项

1. you have declared Mockito as test dependency

<dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-core</artifactId>
    <version>1.10.19</version>
    <scope>test</scope>
</dependency>

要从命令行执行特定测试，请执行

to run a particular test from the command line execute

mvn test -Dtest=fullyQualifedNameToYourTestClass

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