PowerMockito（与Mockito）无法使用ExceptionInInitializerError

我们使用PowerMockito和Mockito来模拟一些静态类。每次抛出似乎都有java.lang.ExceptionInInitializerError。PowerMockito（与Mockito）无法使用ExceptionInInitializerError

你能帮我找出问题出在哪里吗？被测

package com.myproject.myproduct.search.domain; 
import org.elasticsearch.index.query.MultiMatchQueryBuilder; 
import org.elasticsearch.index.query.QueryBuilders; 

public class MyQueryBuilder { 

    public MultiMatchQueryBuilder getMultiMatchQueryBuilder() { 
     MultiMatchQueryBuilder builder = QueryBuilders.multiMatchQuery("term", "field1"); 
     builder.field("field1",200.9f); 
     return builder; 
    } 
}

JUnit测试

的Java类Powermock亚军

package com.myproject.myproduct.search.domain; import org.elasticsearch.index.query.MultiMatchQueryBuilder; import org.elasticsearch.index.query.QueryBuilders; import org.junit.Test; import org.junit.runner.RunWith; import org.powermock.api.mockito.PowerMockito; import org.powermock.core.classloader.annotations.PrepareForTest; import org.powermock.modules.junit4.PowerMockRunner; @RunWith(PowerMockRunner.class) @PrepareForTest(QueryBuilders.class) public class MyQueryBuilderTest { private MyQueryBuilder myQueryBuilder; @Test public void test() { PowerMockito.mockStatic(QueryBuilders.class); MultiMatchQueryBuilder builder = PowerMockito.mock(MultiMatchQueryBuilder.class); } }

就是这样。当我尝试模拟MultiMatchQueryBuilder时，测试代码不工作。

这是例外：

java.lang.ExceptionInInitializerError在 org.elasticsearch.common.logging.DeprecationLogger（DeprecationLogger.java:138）在org.elasticsearch.common.ParseField （ParseField.java:35）在 org.elasticsearch.index.query.AbstractQueryBuilder。（AbstractQueryBuilder.java:53）在 sun.reflect.GeneratedSerializationConstructorAccessor7.newInstance（未知源）在 Ĵ ava.lang.reflect.Constructor.newInstance（Constructor.java:423）at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.newInstance（SunReflectionFactoryInstantiator.java:40） at org.objenesis.ObjenesisBase.newInstance（ObjenesisBase.java： 59）在 org.mockito.internal.creation.jmock.ClassImposterizer.createProxy（ClassImposterizer.java:128）在 org.mockito.internal.creation.jmock.ClassImposterizer.imposterise（ClassImposterizer.java:63）在 org.powermock.api.mockito.internal.mockcreation.MockCreator.createMethodInvocationControl（MockCreator.java:111）在 org.powermock.api.mockito.internal.mockcreation.MockCreator.mock（MockCreator.java:60）在组织.powermock.api.mockito .PowerMockito.mock（PowerMockito.java:143）在 com.spartasystems.stratas.search.domain.MyQueryBuilderTest.testBoostSetProperly（MyQueryBuilderTest.java:22）在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）在太阳.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）在 sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:498）在 org.junit.internal.runners.TestMethod.invoke（TestMethod.java:68）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl $ PowerMockJUnit44MethodRunner.runTestMethod（PowerMockJUnit44RunnerDelegateImpl.java:310）在 org.junit.internal.runners.MethodRoadie $ 2.run（MethodRoadie.java:88）在 org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters（MethodRoadie.java:96）在 org.powermock.modules .junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl $ PowerMockJUnit44MethodRunner.executeTest（PowerMockJUnit44RunnerDelegateImpl.java:294）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl $ PowerMockJUnit47MethodRunner。executeTestInSuper（PowerMockJUnit47RunnerDelegateImpl.java:127）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl $ PowerMockJUnit47MethodRunner.executeTest（PowerMockJUnit47RunnerDelegateImpl.java:82）在 org.powermock.modules.junit4.internal.impl。 PowerMockJUnit44RunnerDelegateImpl $ PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters（PowerMockJUnit44RunnerDelegateImpl.java:282）在 org.junit.internal.runners.MethodRoadie.runTest（MethodRoadie.java:86）在org.junit.internal.runners.MethodRoadie.run（MethodRoadie.java ：49） at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod（PowerMockJUnit44RunnerDelegateImpl.java:207）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods（PowerMockJUnit44RunnerDelegateImpl.java:146）在 org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl $ 1.run（PowerMockJUnit44RunnerDelegateImpl.java:120 ）在 org.junit.internal.runners.ClassRoadie.runUnprotected（ClassRoadie.java:33）在 org.junit.internal.runners.ClassRoadie.runProtected（ClassRoadie.java:45）在 org.powermock。 modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run（PowerMockJUnit44RunnerDelegateImpl.java:122） at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSu iteChunkerImpl.run（JUnit4TestSuiteChunkerImpl.java:104）在 org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run（AbstractCommonPowerMockRunner.java:53）在 org.powermock.modules.junit4.PowerMockRunner。运行（PowerMockRunner.java:53）在org.junit.runner.JUnitCore.run（JUnitCore.java:160）在 com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs（JUnit4IdeaTestRunner.java:68）在 com.intellij .rt.execution.junit.IdeaTestRunner $ Repeater.startRunnerWithArgs（IdeaTestRunner.java:47）在 com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart（JUnitStarter.java:242）在 COM .intellij.rt.execution.junit.JUnitStarter.main（JUnitStarter.java:70）引起：java.lang.NullPointerException在 org.elasticsearch.Build。（Build.java:47）... 41更多

过程结束，退出代码255

注：

实际的底层elasticsearch类的源代码可以在这里找到

https://github.com/elastic/elasticsearch/blob/master/core/src/main/java/org/elasticsearch/index/query/QueryBuilders.java

和

https://github.com/elastic/elasticsearch/blob/master/core/src/main/java/org/elasticsearch/index/query/MultiMatchQueryBuilder.java

来源

2017-08-16 vinoth

@迈克尔这只是示例代码。 “term”的存在或不存在在这里没有区别。 – vinoth

[Class JavaLaunchHelper的可能重复在... libinstrument.dylib中实现。将使用两者之一。哪一个是未定义的]（https://stackoverflow.com/questions/18794573/class-javalaunchhelper-is-implemented-in-both-libinstrument-dylib-one-of-th） – user7294900

@迈克尔点采取。谢谢 – vinoth

当与嘲笑org.elasticsearch.Build#getElasticsearchCodebase

Build.class.getProtectionDomain().getCodeSource().getLocation()

返回null调用，因为代码不具有位置（由CGLIB生成的动态方法。）当你的模拟代码在initializing org.elasticsearch.Build使用

final URL url = getElasticsearchCodebase(); // url is null 
final String urlStr = url.toString(); // null pointer exception.

当然，模拟不会成功，并抛出ExceptionInInitializerError这表明静态初始化或静态变量初始化的评估过程中出现的异常

左右。

您可以使用下面的代码很容易复制此异常：

@RunWith(PowerMockRunner.class) 
@PrepareForTest({QueryBuilders.class}) 
public class MyQueryBuilderTest { 

    @Test 
    public void test() { 
     final Build current = Build.CURRENT; 
    } 

}

来源

2017-08-19 13:48:34 aristotll

PowerMockito（与Mockito）无法使用ExceptionInInitializerError

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