beforePowerMockTestMethod throws ExceptionInInitializerError when using Mockito with PowerMock

[asahoo]

I am getting below error while executing testNg test cases with mockito+powermockito. Any help guidance would be greatly appreciated.

Mockito: 1.9.5
powermockito: 1.5.5
java : 8

beforePowerMockTestMethod(com.test.XXX)  Time elapsed: 0.721 sec  <<< FAILURE!
java.lang.ExceptionInInitializerError: null
    at org.mockito.internal.exceptions.stacktrace.ConditionalStackTraceFilter.<init>(ConditionalStackTraceFilter.java:17)
    at org.mockito.exceptions.base.MockitoException.filterStackTrace(MockitoException.java:30)
    at org.mockito.exceptions.base.MockitoException.<init>(MockitoException.java:19)
    at org.mockito.exceptions.misusing.MockitoConfigurationException.<init>(MockitoConfigurationException.java:18)
    at org.mockito.internal.configuration.ClassPathLoader.loadImplementations(ClassPathLoader.java:145)
    at org.mockito.internal.configuration.ClassPathLoader.findPluginImplementation(ClassPathLoader.java:110)
    at org.mockito.internal.configuration.ClassPathLoader.findPlatformMockMaker(ClassPathLoader.java:106)
    at org.mockito.internal.configuration.ClassPathLoader.<clinit>(ClassPathLoader.java:59)
    at org.mockito.internal.util.MockUtil.<clinit>(MockUtil.java:21)
    at org.mockito.internal.MockitoCore.<init>(MockitoCore.java:40)
    at org.mockito.internal.stubbing.defaultanswers.ReturnsMocks.<init>(ReturnsMocks.java:18)
    at org.mockito.Answers.<clinit>(Answers.java:52)
    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 java.lang.Class.getEnumConstantsShared(Class.java:3312)

[Johan Haleby]

You could try upgrading to a later version and see if that helps. And also try to extend from PowerMockTestCase.

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[asahoo]

Hello Johan,

Thanks for your reply.

I tried all different combination of versions of latest mockito and powermockito with no luck.  Can you please help me I would be really appreciate your suggestion. Thanks.

I am using:

TestNg: 6.8.13

Mockito: 1.9.5
powermockito: 1.5.5
java : 8

 @PowerMockIgnore({"javax.management.*", "javax.xml.*", "org.xml.sax.*", "org.w3c.dom.*",  "org.springframework.context.*", "org.apache.log4j.*","javax.persistence.*"})

@PrepareForTest({MockMe.class})
public class TestTest extends PowerMockTestCase {


    @ObjectFactory
    public IObjectFactory getObjectFactory() {
        return new PowerMockObjectFactory();
    }

    @Mock
    public MockMe mockMe;

    @BeforeTest
    public void init() {
        initMocks(this);
        mockStatic(MockMe.class);
        when(MockMe.getInstance()).thenReturn(mockMe);
    }

    @Test
    public void sampleTest() {
        MockMe mockMe1 = MockMe.getInstance();
        assertEquals(mockMe1, mockMe);
    }
}

The test fails with the following stack trace:

FAILED CONFIGURATION: @BeforeTest init
java.lang.ExceptionInInitializerError
	at org.mockito.internal.exceptions.stacktrace.ConditionalStackTraceFilter.<init>(ConditionalStackTraceFilter.java:17)
	at org.mockito.exceptions.base.MockitoException.filterStackTrace(MockitoException.java:30)
	at org.mockito.exceptions.base.MockitoException.<init>(MockitoException.java:19)
	at org.mockito.exceptions.misusing.MockitoConfigurationException.<init>(MockitoConfigurationException.java:18)
	at org.mockito.internal.configuration.ClassPathLoader.loadImplementations(ClassPathLoader.java:145)
	at org.mockito.internal.configuration.ClassPathLoader.findPluginImplementation(ClassPathLoader.java:110)
	at org.mockito.internal.configuration.ClassPathLoader.findPlatformMockMaker(ClassPathLoader.java:106)
	at org.mockito.internal.configuration.ClassPathLoader.<clinit>(ClassPathLoader.java:59)
	at org.mockito.internal.util.MockUtil.<clinit>(MockUtil.java:21)
	at org.mockito.internal.MockitoCore.<init>(MockitoCore.java:40)
	at org.mockito.internal.stubbing.defaultanswers.ReturnsMocks.<init>(ReturnsMocks.java:18)
	at org.mockito.Answers.<clinit>(Answers.java:52)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at java.lang.Class.getEnumConstantsShared(Class.java:2942)
	at java.lang.Class.enumConstantDirectory(Class.java:2963)
	at java.lang.Enum.valueOf(Enum.java:191)
	at sun.reflect.annotation.AnnotationParser.parseEnumValue(AnnotationParser.java:413)
	at sun.reflect.annotation.AnnotationParser.parseMemberValue(AnnotationParser.java:278)
	at java.lang.reflect.Method.getDefaultValue(Method.java:720)
	at sun.reflect.annotation.AnnotationType.<init>(AnnotationType.java:99)
	at sun.reflect.annotation.AnnotationType.getInstance(AnnotationType.java:66)
	at sun.reflect.annotation.AnnotationParser.parseAnnotation(AnnotationParser.java:202)
	at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:69)
	at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:52)
	at java.lang.reflect.Field.declaredAnnotations(Field.java:1014)
	at java.lang.reflect.Field.getAnnotation(Field.java:1000)
	at java.lang.reflect.AccessibleObject.isAnnotationPresent(AccessibleObject.java:168)
	at org.powermock.reflect.internal.matcherstrategies.FieldAnnotationMatcherStrategy.matches(FieldAnnotationMatcherStrategy.java:37)
	at org.powermock.reflect.internal.WhiteboxImpl.findAllFieldsUsingStrategy(WhiteboxImpl.java:535)
	at org.powermock.reflect.internal.WhiteboxImpl.getFieldsAnnotatedWith(WhiteboxImpl.java:2343)
	at org.powermock.reflect.Whitebox.getFieldsAnnotatedWith(Whitebox.java:585)
	at org.powermock.api.extension.listener.AnnotationEnabler.standardInject(AnnotationEnabler.java:70)
	at org.powermock.api.extension.listener.AnnotationEnabler.beforeTestMethod(AnnotationEnabler.java:52)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.powermock.reflect.internal.WhiteboxImpl.performMethodInvocation(WhiteboxImpl.java:2014)
	at org.powermock.reflect.internal.WhiteboxImpl.invokeMethod(WhiteboxImpl.java:744)
	at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:415)
	at org.powermock.modules.testng.internal.PowerMockTestNGMethodHandler.injectMocksUsingAnnotationEnabler(PowerMockTestNGMethodHandler.java:72)
	at org.powermock.modules.testng.internal.PowerMockTestNGMethodHandler.invoke(PowerMockTestNGMethodHandler.java:47)
	at com.actifio.psrv.util.analysis.TestTest_$$_javassist_0.init(TestTest_$$_javassist_0.java)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:80)
	at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:564)
	at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:213)
	at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:138)
	at org.testng.TestRunner.beforeRun(TestRunner.java:641)
	at org.testng.TestRunner.run(TestRunner.java:609)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
	at org.testng.SuiteRunner.run(SuiteRunner.java:240)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1198)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1123)
	at org.testng.TestNG.run(TestNG.java:1031)
	at org.testng.TestNG.privateMain(TestNG.java:1338)
	at org.testng.TestNG.main(TestNG.java:1307)
Caused by: java.lang.NullPointerException
	at org.mockito.internal.exceptions.stacktrace.StackTraceFilter.<clinit>(StackTraceFilter.java:21)
	... 67 more

[Johan Haleby]

Try moving 

mockStatic(MockMe.class);

when(MockMe.getInstance()).thenReturn(mockMe);

into the sampleTest method instead. It's (unfortunately) a known issue that mocking sometimes fail in TestNG in a @Before method. 

/Johan

[asahoo]

Thanks for your suggestion, I implemented per below but no luck :(

Does powermock has a fix of the know issue with TestNg @Before method ?

[Johan Haleby]

Unfortunately not. If you want to try and help out solving it it would be very much appreciated.