PowerMock PrepareForTest annotation causing proble

Question

I'm having some trouble with the PrepareForTest annotation and creating a new instance of an AmazonSQSClient.

I'm writing a Jenkins plugin and unfortunately need to mock the FormValidation static class in order to ensure that warning and error messages are produced on field validation of my plugin. However when creating an instance of AmazonSQSClient I get an org.apache.http.conn.ssl.SSLInitializationException

I've abstracted it down to a very simple example, here's my test file:

package com.test;

import com.amazonaws.services.sqs.AmazonSQS;
import com.amazonaws.services.sqs.AmazonSQSClient;
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)  
public class SQSTest {

    // This is for mimicking the mocking of FormValidation
    private static class Foo {}

    @Test
    @PrepareForTest(Foo.class)
    public void buildTest()
    {
        AmazonSQS sqs = new AmazonSQSClient();
    }
}

On running this code I get the following error:

org.apache.http.conn.ssl.SSLInitializationException: Failure initializing default SSL context
    at org.apache.http.conn.ssl.SSLSocketFactory.createDefaultSSLContext(SSLSocketFactory.java:360)
    at org.apache.http.conn.ssl.SSLSocketFactory.getSocketFactory(SSLSocketFactory.java:175)
    at org.apache.http.impl.conn.SchemeRegistryFactory.createDefault(SchemeRegistryFactory.java:49)
    at org.apache.http.impl.conn.PoolingClientConnectionManager.<init>(PoolingClientConnectionManager.java:93)
    at com.amazonaws.http.ConnectionManagerFactory.createPoolingClientConnManager(ConnectionManagerFactory.java:26)
    at com.amazonaws.http.HttpClientFactory.createHttpClient(HttpClientFactory.java:87)
    at com.amazonaws.http.AmazonHttpClient.<init>(AmazonHttpClient.java:121)
    at com.amazonaws.AmazonWebServiceClient.<init>(AmazonWebServiceClient.java:66)
    at com.amazonaws.services.sqs.AmazonSQSClient.<init>(AmazonSQSClient.java:189)
    at com.amazonaws.services.sqs.AmazonSQSClient.<init>(AmazonSQSClient.java:93)
    at com.test.SQSTest.buildTest(SQSTest.java:19)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:310)
    at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:88)
    at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:96)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:294)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:127)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:282)
    at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:86)
    at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:207)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:146)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:120)
    at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:33)
    at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:45)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:118)
    at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:101)
    at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)
    at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:53)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:77)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.security.NoSuchAlgorithmException: class configured for KeyManagerFactory: sun.security.ssl.KeyManagerFactoryImpl$SunX509 not a KeyManagerFactory
    at sun.security.jca.GetInstance.checkSuperClass(GetInstance.java:258)
    at sun.security.jca.GetInstance.getInstance(GetInstance.java:237)
    at sun.security.jca.GetInstance.getInstance(GetInstance.java:164)
    at javax.net.ssl.KeyManagerFactory.getInstance(KeyManagerFactory.java:138)
    at org.apache.http.conn.ssl.SSLSocketFactory.createSSLContext(SSLSocketFactory.java:223)
    at org.apache.http.conn.ssl.SSLSocketFactory.createDefaultSSLContext(SSLSocketFactory.java:358)
    ... 42 more

In order to help anyone wanting to build and run this quickly here is my pom.xml file:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.test</groupId>
    <artifactId>test.sqs</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>hpi</packaging>



    <properties>
        <!--
          explicitly specifying the latest version here because one we get from the parent POM
          tends to lag behind a bit
        -->
        <maven-hpi-plugin.version>1.96</maven-hpi-plugin.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk</artifactId>
            <version>1.5.4</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>

        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>1.9.5</version>
        </dependency>

        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-api-mockito</artifactId>
            <version>1.5.1</version>
        </dependency>

        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-module-junit4</artifactId>
            <version>1.5.1</version>
        </dependency>

    </dependencies>
</project>

When the annotation @PrepareForTest(Foo.class) is removed from the method the test runs fine.

I was wondering if someone could explain why this is happening and if there is a work around for it or a way to avoid mocking the FormValidation class?

Thanks.

Answer 1

As @Natalie already mentioned, you can work with the @PowerMockIgnore() annotation. Maybe you need to ignore the packages javax.net.ssl.* and / or javax.crypto.*:

@PowerMockIgnore({"org.apache.http.conn.ssl.*", "javax.net.ssl.*" , "javax.crypto.*"})

You can get here some background information:

https://groups.google.com/forum/#!topic/powermock/v4nreP2AnOQ

This is most likely because SSLContext is loaded by the bootstrap classloader and PowerMock cannot byte-code manipulate these classes. You have to use this approach to mock that method. /Johan Haleby

Answer 2

Try to add @PowerMockIgnore("org.apache.http.conn.ssl.*") annotation to your class