CODEWITHSUNDEEP
javaandroideclipsemockito
user3054298
user3054298

Reputation: 133

Trouble configuration of mockito with eclipse. Gives error: java.lang.verifyError

When i add my mockito library to class path, and use a simple mockito example for testing where i try to return a wrong value for the function add by using the mock object, i get java.lang.verifyerror. Following is the code used for testing followed by logcat.

    @Test
    public void testadd()
    {
        maincode obj2=mock(maincode.class);
        when(obj2.add(0, 0)).thenReturn(9);
        assertEquals(obj2.add(0, 0),9); 
    }

I get the following error. Please help! thx.

java.lang.VerifyError: org/mockito/cglib/core/ReflectUtils at org.mockito.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:167) at org.mockito.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) at org.mockito.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:217) at org.mockito.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145) at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:117) at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:109) at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:105) at org.mockito.cglib.proxy.Enhancer.(Enhancer.java:70) at org.mockito.internal.creation.jmock.ClassImposterizer.createProxyClass(ClassImposterizer.java:85) at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:62) at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:56) at org.mockito.internal.creation.CglibMockMaker.createMock(CglibMockMaker.java:23) at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:26) at org.mockito.internal.MockitoCore.mock(MockitoCore.java:51) at org.mockito.Mockito.mock(Mockito.java:1243) at org.mockito.Mockito.mock(Mockito.java:1120) at testaddmock.testadd(testaddmock.java:24) at java.lang.reflect.Method.invokeNative(Native Method) at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191) at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176) at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554) at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1701)

Upvotes: 8

Views: 4153

Answers (4)

sasfour
sasfour

Reputation: 409

I was stuck on a similar error for 3 days! Adding dexmaker libraries didn't help at all! In the end I changed the version of power mock to the latest 1.5.6 and it worked fine after that! Hope this helps someone as well.

Upvotes: 0

Dori
Dori

Reputation: 18413

@Grimmys answer (+1) has the correct answer for me.

When running on Android adding the missing gradle imports for Dexmaker is all thats required

androidTestCompile 'org.mockito:mockito-core:1.9.5' 
androidTestCompile 'com.google.dexmaker:dexmaker:1.1' 
androidTestCompile 'com.google.dexmaker:dexmaker-mockito:1.1'

Upvotes: 8

Spec
Spec

Reputation: 445

@Grimmy dexmaker-1.0.jar is also needs.

@user3054298 I met the same problem & solved by following this blog's guide:http://corner.squareup.com/2012/10/mockito-android.html

A new feature in Mockito 1.9.5 is support for Android’s Dalvik runtime. It uses DexMaker to generate mock classes on the fly. To use Mockito on a device or emulator, you’ll need to add three .jar files to your test project’s libs directory: mockito-all-1.9.5.jar, dexmaker-1.0.jar, and dexmaker-mockito-1.0.jar.

Upvotes: 2

Grimmy
Grimmy

Reputation: 2061

By default, Mockito uses cglib to create dynamic proxies, but for Android this will not work, because cglib generates .class files, not .dex. But starting from version 1.9.5 Mockito offers an extension point that allows replacing the proxy generation engine, so all you need is change this engine and I think Dexmaker is the best variant.

So to make it works you should just add dexmaker-mockito-1.0.jar to your project, and Mockito will use it to generate his proxies.

Upvotes: 13

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