Mocking RecyclerView.Adapter stopped working after Rebuilding project.

138 views
Skip to first unread message

Michał Klimczak

unread,
Sep 18, 2017, 12:29:59 AM9/18/17
to mockito
I use inline mocking to mock RecyclerView.Adapter. It worked nice and well for a few weeks, but today I hit Rebuild and something must have changed, because it doesn't build and shows a following stacktrace. Any ideas?

Dependencies:

implementation 'com.android.support:recyclerview-v7:26.0.2'
testImplementation 'org.mockito:mockito-core:2.10.0'
testImplementation 'com.nhaarman:mockito-kotlin-kt1.1:1.5.0'
testImplementation 'junit:junit:4.12'

Stacktrace:


org.mockito.exceptions.base.MockitoException: 
Mockito cannot mock this class: class android.support.v7.widget.RecyclerView$Adapter.

If you're not sure why you're getting this error, please report to the mailing list.


Java               : 1.8
JVM vendor name    : JetBrains s.r.o
JVM vendor version : 25.152-b01
JVM name           : OpenJDK 64-Bit Server VM
JVM version        : 1.8.0_152-release-915-b01
JVM info           : mixed mode
OS name            : Mac OS X
OS version         : 10.12.6


You are seeing this disclaimer because Mockito is configured to create inlined mocks.
You can learn about inline mocks and their limitations under item #39 of the Mockito class javadoc.

Underlying exception : org.mockito.exceptions.base.MockitoException: Could not modify all classes [class java.lang.Object, class android.support.v7.widget.RecyclerView$Adapter]

at org.mockito.internal.runners.DefaultInternalRunner$1.withBefores(DefaultInternalRunner.java:38)
at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:276)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.mockito.internal.runners.DefaultInternalRunner$1.run(DefaultInternalRunner.java:78)
at org.mockito.internal.runners.DefaultInternalRunner.run(DefaultInternalRunner.java:84)
at org.mockito.internal.runners.StrictRunner.run(StrictRunner.java:39)
at org.mockito.junit.MockitoJUnitRunner.run(MockitoJUnitRunner.java:161)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
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:498)
at com.intellij.rt.execution.application.AppMainV2.main(AppMainV2.java:131)
Caused by: org.mockito.exceptions.base.MockitoException: Could not modify all classes [class java.lang.Object, class android.support.v7.widget.RecyclerView$Adapter]
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:138)
at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:346)
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:161)
at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:355)
... 32 more
Caused by: java.lang.IllegalStateException: 
Byte Buddy could not instrument all classes within the mock's type hierarchy

This problem should never occur for javac-compiled classes. This problem has been observed for classes that are:
 - Compiled by older versions of scalac
 - Classes that are part of the Android distribution
at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.triggerRetransformation(InlineBytecodeGenerator.java:120)
at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.mockClass(InlineBytecodeGenerator.java:97)
at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator$1.call(TypeCachingBytecodeGenerator.java:37)
at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator$1.call(TypeCachingBytecodeGenerator.java:34)
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:138)
at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:346)
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:161)
at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:355)
at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.mockClass(TypeCachingBytecodeGenerator.java:32)
at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.createMockType(InlineByteBuddyMockMaker.java:200)
at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.createMock(InlineByteBuddyMockMaker.java:181)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:51)
at org.mockito.Mockito.mock(Mockito.java:1798)
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.IndependentAnnotationEngine.createMockFor(IndependentAnnotationEngine.java:38)
at org.mockito.internal.configuration.IndependentAnnotationEngine.process(IndependentAnnotationEngine.java:62)
at org.mockito.internal.configuration.InjectingAnnotationEngine.processIndependentAnnotations(InjectingAnnotationEngine.java:57)
at org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAnnotationEngine.java:41)
at org.mockito.MockitoAnnotations.initMocks(MockitoAnnotations.java:69)
... 32 more
Caused by: java.lang.NoClassDefFoundError: android/database/Observable
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
at java.lang.Class.getDeclaredFields(Class.java:1916)
at net.bytebuddy.description.type.TypeDescription$ForLoadedType.getDeclaredFields(TypeDescription.java:7227)
at net.bytebuddy.dynamic.scaffold.InstrumentedType$Factory$Default$1.represent(InstrumentedType.java:222)
at net.bytebuddy.ByteBuddy.redefine(ByteBuddy.java:698)
at net.bytebuddy.ByteBuddy.redefine(ByteBuddy.java:676)
at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.transform(InlineBytecodeGenerator.java:167)
at sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:428)
at sun.instrument.InstrumentationImpl.retransformClasses0(Native Method)
at sun.instrument.InstrumentationImpl.retransformClasses(InstrumentationImpl.java:144)
at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.triggerRetransformation(InlineBytecodeGenerator.java:117)
... 52 more
Caused by: java.lang.ClassNotFoundException: android.database.Observable
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 77 more



Michał Klimczak

unread,
Sep 18, 2017, 3:42:37 AM9/18/17
to mockito
I have absolutely no idea how, but it was fixed after I built the project from command line. Random stuff...

Szczepan Faber

unread,
Sep 19, 2017, 8:55:10 AM9/19/17
to mockito, Rafael Winterhalter
+ Rafael

Thank you for reporting! inline mocks is incubating and we are chipping away various problems until it is rock solid.

@Michał, please favor GitHub tickets for reporting issues.

Cheers!

--
You received this message because you are subscribed to the Google Groups "mockito" group.
To unsubscribe from this group and stop receiving emails from it, send an email to mockito+unsubscribe@googlegroups.com.
To post to this group, send email to moc...@googlegroups.com.
Visit this group at https://groups.google.com/group/mockito.
To view this discussion on the web visit https://groups.google.com/d/msgid/mockito/3ac65e06-4449-42af-8eef-64afab2eb9c2%40googlegroups.com.

For more options, visit https://groups.google.com/d/optout.



--
Szczepan Faber
Founder @ http://mockito.org | Twitter @ https://twitter.com/mockitoguy
Author @ https://www.linkedin.com/in/szczepiq/recent-activity/posts/

Michał Klimczak

unread,
Sep 19, 2017, 9:05:47 AM9/19/17
to mockito, Rafael Winterhalter
I started in the github, but it pointed me here, since I thought it was rather a configuration than library issue. Sorry for not providing more details but it's one of these magic issues ;)
Love the inline mocks btw, thank you guys for amazing work.

To unsubscribe from this group and stop receiving emails from it, send an email to mockito+u...@googlegroups.com.

To post to this group, send email to moc...@googlegroups.com.
Visit this group at https://groups.google.com/group/mockito.
To view this discussion on the web visit https://groups.google.com/d/msgid/mockito/3ac65e06-4449-42af-8eef-64afab2eb9c2%40googlegroups.com.

For more options, visit https://groups.google.com/d/optout.



--

--
You received this message because you are subscribed to a topic in the Google Groups "mockito" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/mockito/cUCCe2X_dpM/unsubscribe.
To unsubscribe from this group and all its topics, send an email to mockito+u...@googlegroups.com.

To post to this group, send email to moc...@googlegroups.com.
Visit this group at https://groups.google.com/group/mockito.
To view this discussion on the web visit https://groups.google.com/d/msgid/mockito/CADb1c%2BMqYYsV-E6EHQhX4J59j_deb%3Dyhg8t8DGOyB0%3Dq5tLXpg%40mail.gmail.com.

For more options, visit https://groups.google.com/d/optout.
--

 

Future Mind Sp. z o.o.
ul. Puławska 182
02-670 Warszawa


Sąd Rejonowy dla M. St. Warszawy, XIII Wydział Gospodarczy Krajowego Rejestru Sądowego, nr KRS: 0000309577, wysokość kapitału zakładowego: 140.000 zł, NIP: 113-27-30-440, REGON: 141498999. 

This message contains confidential information intended solely for the addressee. If you are not the addressee or if you have received the message in error, please contact the sender and delete it permanently. Failing to comply is contrary to Future Mind Sp. z o.o. interest and may be unlawful.
Ta wiadomość zawiera poufne informacje przeznaczone tylko dla adresata. Jeżeli nie jesteście Państwo jej adresatem, bądź otrzymaliście ją przez pomyłkę, prosimy o powiadomienie o tym nadawcy oraz trwałe jej usunięcie. Odmienne zachowanie jest niezgodne z interesem Future Mind Sp. z o.o. i może naruszać prawo.

Rafael Winterhalter

unread,
Sep 19, 2017, 9:12:14 AM9/19/17
to Michał Klimczak, mockito
Hi, from the stack trace it seems like you are missing an Android type that is referenced by some class. Seems like an Android version conflict.
Cheers, Rafael

To unsubscribe from this group and stop receiving emails from it, send an email to mockito+unsubscribe@googlegroups.com.
You received this message because you are subscribed to a topic in the Google Groups "mockito" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/mockito/cUCCe2X_dpM/unsubscribe.
To unsubscribe from this group and all its topics, send an email to mockito+unsubscribe@googlegroups.com.

To post to this group, send email to moc...@googlegroups.com.
Visit this group at https://groups.google.com/group/mockito.
 To view this discussion on the web visit https://groups.google.com/d/msgid/mockito/CADb1c%2BMqYYsV-E6EHQhX4J59j_deb%3Dyhg8t8DGOyB0%3Dq5tLXpg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
--
Reply all
Reply to author
Forward
0 new messages