VirtualMachineError on mocking LinearLayout (mockito + dexmaker)

[GoogleCodeExporter]

To reproduce:

public class Test extends TestCase {

    // mocked objects
    @Mock private LinearLayout layout;

    @Override
    protected void setUp() {
        MockitoAnnotations.initMocks(this);

        try {
            super.setUp();
        } catch (Exception e) {
            // Ignore exception
        }
    }

    public void testTest() {
        System.out.println("Hello");
    }
}

What version of the product are you using? On what operating system?
Mockito and Dexmaker from latest sources

While converting an android-mock test to use mockito + dexmaker, this line:

@Mock private LinearLayout layout;

caused:

java.lang.VirtualMachineError
at dalvik.system.DexFile.defineClass(Native Method)
at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:195)
at dalvik.system.DexPathList.findClass(DexPathList.java:315)
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:58)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at com.google.dexmaker.stock.ProxyBuilder.loadClass(ProxyBuilder.java:273)
at com.google.dexmaker.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:255)
at 
com.google.dexmaker.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:
54)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:26)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:49)
at org.mockito.Mockito.mock(Mockito.java:1224)
at 
org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotatio
nProcessor.java:30)
at 
org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotatio
nProcessor.java:16)
at 
org.mockito.internal.configuration.DefaultAnnotationEngine.createMockFor(Default
AnnotationEngine.java:43)
at 
org.mockito.internal.configuration.DefaultAnnotationEngine.process(DefaultAnnota
tionEngine.java:66)
at 
org.mockito.internal.configuration.InjectingAnnotationEngine.processIndependentA
nnotations(InjectingAnnotationEngine.java:71)
at 
org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAn
notationEngine.java:55)
at org.mockito.MockitoAnnotations.initMocks(MockitoAnnotations.java:108)
at test.Test.setUp(Test.java:17)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154)
at 
android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:53
7)
at 
android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1551)

Perhaps these Android classes aren't meant to be mocked, but it would simplify 
the conversion of tests from android-mock to Mockito + Dexmaker.

Original issue reported on code.google.com by rpratiw...@gmail.com on 31 May 2012 at 1:05

[GoogleCodeExporter]

my apologies, this was an error in my environment.  please discard this issue.

Original comment by rpratiw...@gmail.com on 31 May 2012 at 6:57

[GoogleCodeExporter]

No worries. I'm glad it's resolved.

Original comment by klyu...@google.com on 26 Jun 2012 at 6:26

• Changed state: Invalid

[GoogleCodeExporter]

Getting the exact same error doing a partial mock of an activity using mockito 
1.9.5 + dexmaker 0.9. How was this solved? Any pointers are appreciated

java.lang.VirtualMachineError
at dalvik.system.DexFile.defineClass(Native Method)
at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:207)
at dalvik.system.DexFile.loadClass(DexFile.java:196)
at dalvik.system.DexClassLoader.findClass(DexClassLoader.java:226)
at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at com.google.dexmaker.stock.ProxyBuilder.loadClass(ProxyBuilder.java:272)
at com.google.dexmaker.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:254)
at 
com.google.dexmaker.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:
54)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:26)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:49)
at org.mockito.Mockito.spy(Mockito.java:1324)
at 
com.company.droid.helper.ActivitySandbox.setupActivity(ActivitySandbox.java:21)
at 
com.company.droid.ui.fragment.signup.SignupFragmentTest.setUp(SignupFragmentTest
.java:50)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154)
at 
android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:52
9)
at 
android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1448)

Original comment by work.am...@gmail.com on 17 Oct 2012 at 5:51

[GoogleCodeExporter]

Would you please obtain the system log -- it will contain much more information 
(e.g., what the VM didn't like about the generated bytecode). Without that 
information, it's impossible to tell what went wrong.

Original comment by klyu...@google.com on 17 Oct 2012 at 5:54

[GoogleCodeExporter]

I am having the same issue. It would look like mockito is overriding a final 
method.

01-23 12:01:56.417: W/dalvikvm(16726): Method LMyView_Proxy;.getParent 
overrides final Landroid/view/View;.getParent
01-23 12:01:56.417: W/dalvikvm(16726): Link of class 'LMyView_Proxy;' failed

Original comment by michele.sama on 23 Jan 2013 at 12:07

[GoogleCodeExporter]

Are you experiencing this with DexMaker v1.0?

Original comment by klyu...@google.com on 23 Jan 2013 at 4:27

[GoogleCodeExporter]

I have same error trying to mock a relative layout and it happens with 
dexmarker 1.0. 

  7186               dalvikvm  W  Method LRelativeLayout_Proxy;.getParent overrides final Landroid/view/View;.getParent
  7186               dalvikvm  W  failed creating vtable
  7186               dalvikvm  W  Link of class 'LRelativeLayout_Proxy;' failed

Original comment by pedro.fr...@gmail.com on 7 Feb 2013 at 10:24

[GoogleCodeExporter]

I can also reproduce this issue on v1.0 (see below). Any ideas?

DexOpt: --- BEGIN 'Generated-254988436.jar' (bootstrap=0) ---
method LRelativeLayout_Proxy;.assignParent incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.canAcceptDrag incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.clearAccessibilityFocusNoCallbacks incorrectly 
overrides package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.createSnapshot incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.destroyLayer incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.dispatchAttachedToWindow incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.dispatchCollectViewAttributes incorrectly 
overrides package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.dispatchDetachedFromWindow incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.dispatchPopulateAccessibilityEventInternal 
incorrectly overrides package-private method with same name in 
Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.dispatchScreenStateChanged incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.draw incorrectly overrides package-private method 
with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.ensureInputFocusOnFirstFocusable incorrectly 
overrides package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.ensureTransformationInfo incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.findFrontmostDroppableChildAt incorrectly 
overrides package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.findUserSetNextFocus incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.findViewByAccessibilityIdTraversal incorrectly 
overrides package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.finishAnimatingView incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.getBoundsOnScreen incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.getHardwareLayer incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.getListenerInfo incorrectly overrides 
package-private method with same name in Landroid/view/View;
Method LRelativeLayout_Proxy;.getParent overrides final 
Landroid/view/View;.getParent
failed creating vtable
DexOpt: load 17ms, verify+opt 0ms, 230404 bytes
DexOpt: --- END 'Generated-254988436.jar' (success) ---
DEX prep 
'/data/data/com.google.android.apps.authenticator2/cache/Generated-254988436.jar
': unzip in 2ms, rewrite 86ms
method LRelativeLayout_Proxy;.assignParent incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.canAcceptDrag incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.clearAccessibilityFocusNoCallbacks incorrectly 
overrides package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.createSnapshot incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.destroyLayer incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.dispatchAttachedToWindow incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.dispatchCollectViewAttributes incorrectly 
overrides package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.dispatchDetachedFromWindow incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.dispatchPopulateAccessibilityEventInternal 
incorrectly overrides package-private method with same name in 
Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.dispatchScreenStateChanged incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.draw incorrectly overrides package-private method 
with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.ensureInputFocusOnFirstFocusable incorrectly 
overrides package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.ensureTransformationInfo incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.findFrontmostDroppableChildAt incorrectly 
overrides package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.findUserSetNextFocus incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.findViewByAccessibilityIdTraversal incorrectly 
overrides package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.finishAnimatingView incorrectly overrides 
package-private method with same name in Landroid/view/ViewGroup;
method LRelativeLayout_Proxy;.getBoundsOnScreen incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.getHardwareLayer incorrectly overrides 
package-private method with same name in Landroid/view/View;
method LRelativeLayout_Proxy;.getListenerInfo incorrectly overrides 
package-private method with same name in Landroid/view/View;
Method LRelativeLayout_Proxy;.getParent overrides final 
Landroid/view/View;.getParent
failed creating vtable
Link of class 'LRelativeLayout_Proxy;' failed

java.lang.VirtualMachineError
    at dalvik.system.DexFile.defineClass(Native Method)
    at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:211)
    at dalvik.system.DexPathList.findClass(DexPathList.java:305)
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:62)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
    at com.google.dexmaker.stock.ProxyBuilder.loadClass(ProxyBuilder.java:272)
    at com.google.dexmaker.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:254)
    at com.google.dexmaker.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:56)
    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)

Original comment by klyu...@google.com on 7 Feb 2013 at 7:37

• Changed state: Accepted

[GoogleCodeExporter]

Looks like we're generating mocks in the wrong package. We can't mock 
package-private methods of superclasses defined in the android.view package if 
our mock subclass is in the android.widget package.

The fix is to either stop mocking these methods, or to change dexmaker to put 
classes in another package. I thought we had tests for this but may be mistaken.

Original comment by limpbizkit on 8 Feb 2013 at 3:23

[GoogleCodeExporter]

Nope, the package private methods are not the problem, the final ones are:
  Method LRelativeLayout_Proxy;.getParent overrides final Landroid/view/View;.getParent

Our code that attempts to not override final methods must be broken.

Original comment by limpbizkit on 8 Feb 2013 at 3:50

[GoogleCodeExporter]

It's a VM bug in Dalvik. I'll report it upstream. (Which doesn't necessarily 
mean we shouldn't also work around in dexmaker).

Original comment by limpbizkit on 8 Feb 2013 at 4:04

[GoogleCodeExporter]

Report upstream: https://code.google.com/p/android/issues/detail?id=46766

Our workaround should be to not override methods if there's a final package 
private method with the same signature.

Original comment by limpbizkit on 8 Feb 2013 at 4:14

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

Added patch for ProxyBuilder that implements the workaround mentioned by 
@limpbizkit.

Specifically it skips private methods declared in a package other than the 
original package of the class being mocked.

Original comment by j...@sharethis.com on 10 Dec 2013 at 7:23

Attachments:

• 0001-Implemented-workaround-to-avoid-mocking-package-priv.patch

[GoogleCodeExporter]

I still see the error after applying the patch
java.lang.VirtualMachineError
    at dalvik.system.DexFile.defineClassNative(Native Method)
    at dalvik.system.DexFile.defineClass(DexFile.java:222)
    at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:215)
    at dalvik.system.DexPathList.findClass(DexPathList.java:322)
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
    at com.google.dexmaker.stock.ProxyBuilder.loadClass(ProxyBuilder.java:272)
    at com.google.dexmaker.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:254)
    at com.google.dexmaker.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:57)
    at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:32)
    at org.mockito.internal.MockitoCore.mock(MockitoCore.java:55)
    at org.mockito.Mockito.mock(Mockito.java:1243)

Original comment by dsaket.t...@gmail.com on 12 Sep 2014 at 5:22

[GoogleCodeExporter]

Which class is this failing on?

Original comment by jason.po...@gmail.com on 12 Sep 2014 at 5:26

[GoogleCodeExporter]

com.android.settings.bluetooth.BluetoothDeviceDetailsFragmentIntegrationTests:
Error in testAskDisconnect:
java.lang.VirtualMachineError
    at dalvik.system.DexFile.defineClassNative(Native Method)
    at dalvik.system.DexFile.defineClass(DexFile.java:222)
    at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:215)
    at dalvik.system.DexPathList.findClass(DexPathList.java:322)
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
    at com.google.dexmaker.stock.ProxyBuilder.loadClass(ProxyBuilder.java:272)
    at com.google.dexmaker.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:254)
    at com.google.dexmaker.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:57)
    at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:32)
    at org.mockito.internal.MockitoCore.mock(MockitoCore.java:55)
    at org.mockito.Mockito.mock(Mockito.java:1243)
    at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:33)
    at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:16)
    at org.mockito.internal.configuration.DefaultAnnotationEngine.createMockFor(DefaultAnnotationEngine.java:43)
    at org.mockito.internal.configuration.DefaultAnnotationEngine.process(DefaultAnnotationEngine.java:66)
    at org.mockito.internal.configuration.InjectingAnnotationEngine.processIndependentAnnotations(InjectingAnnotationEngine.java:71)
    at org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAnnotationEngine.java:55)
    at org.mockito.MockitoAnnotations.initMocks(MockitoAnnotations.java:117)
    at com.android.settings.bluetooth.BluetoothDeviceDetailsFragmentIntegrationTests.setUp(BluetoothDeviceDetailsFragmentIntegrationTests.java:77)
    at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
    at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
    at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:556)
    at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1705)

Original comment by dsaket.t...@gmail.com on 16 Sep 2014 at 1:21

[GoogleCodeExporter]

Class usage
public class BluetoothDeviceDetailsFragmentIntegrationTests extends
        ActivityInstrumentationTestCase2<EmptyActivity> {

74    @Override
75    protected void setUp() throws Exception {
76        super.setUp();
77        MockitoAnnotations.initMocks(this);

}

Original comment by dsaket.t...@gmail.com on 16 Sep 2014 at 1:31