Can PowerMock be used with ElasticsearchIntegrationTest?

Question

I have been using ElasticsearchIntegrationTest for testing my code without elasticsearch server. There are few private members in my class so thought of using Powermock for accessing private members. While running test i get exception.

Can Powermock be used with ElasticsearchIntegrationTest??

Code :

import org.elasticsearch.test.ElasticsearchIntegrationTest;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;


@RunWith(PowerMockRunner.class)
@PrepareForTest(AbstractTest.class)
public class PowerMockitTest extends ElasticsearchIntegrationTest{

    AbstractTest abstractTest =  mock(AbstractTest.class);

    @Test
    public void testPowerMokito() throws Exception{
      doReturn(internalCluster().transportClient()).when(abstractImporter, "initClient");
    }

}

Exception :

java.lang.IllegalStateException: Failed to transform class with name org.elasticsearch.test.ElasticsearchIntegrationTest. Reason: cannot find org.apache.http.impl.client.CloseableHttpClient at org.powermock.core.classloader.MockClassLoader.loadMockClass(MockClassLoader.java:267) at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:180) at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:70) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at java.lang.ClassLoader.defineClass(ClassLoader.java:642) at org.powermock.core.classloader.MockClassLoader.loadMockClass(MockClassLoader.java:270) at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:180) at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:70) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.createDelegatorFromClassloader(JUnit4TestSuiteChunkerImpl.java:145) at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.createDelegatorFromClassloader(JUnit4TestSuiteChunkerImpl.java:40) at org.powermock.tests.utils.impl.AbstractTestSuiteChunkerImpl.createTestDelegators(AbstractTestSuiteChunkerImpl.java:244) at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.(JUnit4TestSuiteChunkerImpl.java:61) at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.(AbstractCommonPowerMockRunner.java:32) at org.powermock.modules.junit4.PowerMockRunner.(PowerMockRunner.java:34) 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.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:29) at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:21) at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59) at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26) at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59) at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:26) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.(JUnit4TestReference.java:33) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.(JUnit4TestClassReference.java:25) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:48) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

Caused by: javassist.CannotCompileException: cannot find org.apache.http.impl.client.CloseableHttpClient at javassist.expr.NewExpr.replace(NewExpr.java:215) at org.powermock.core.transformers.impl.MainMockTransformer$PowerMockExpressionEditor.edit(MainMockTransformer.java:418) at javassist.expr.ExprEditor.loopBody(ExprEditor.java:212) at javassist.expr.ExprEditor.doit(ExprEditor.java:91) at javassist.CtClassType.instrument(CtClassType.java:1437) at org.powermock.core.transformers.impl.MainMockTransformer.transform(MainMockTransformer.java:74) at org.powermock.core.classloader.MockClassLoader.loadMockClass(MockClassLoader.java:252) ... 36 more

Caused by: javassist.NotFoundException: org.apache.http.impl.client.CloseableHttpClient at javassist.ClassPool.get(ClassPool.java:452) at javassist.bytecode.Descriptor.toCtClass(Descriptor.java:592) at javassist.bytecode.Descriptor.getParameterTypes(Descriptor.java:439) at javassist.expr.NewExpr.replace(NewExpr.java:188) ... 42 more

Answer 1

Base on your stack trace I can guess that either org.elasticsearch.test.ElasticsearchIntegrationTest or one of superclass or field depends on org.apache.http.impl.client.CloseableHttpClient and the class cannot be found in Runtime, so it means class not in test class path.