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Mockito Inline can't mock Finatra Response Class

See original GitHub issue

Seen a few of these lying around, but my stacktrace is also different.

I was trying to mock the Finatra ResponseBuilder class.

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 com.twitter.finatra.http.response.ResponseBuilder, interface com.twitter.inject.Logging, interface com.twitter.util.logging.Logging]
	at <testclass.java>
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:217)
	at org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:266)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:263)
	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$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:114)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:57)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:66)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
	at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:109)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:377)
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
	at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.mockito.exceptions.base.MockitoException: Could not modify all classes [class com.twitter.finatra.http.response.ResponseBuilder, interface com.twitter.inject.Logging, interface com.twitter.util.logging.Logging]
	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)
	... 43 more
Caused by: java.lang.UnsupportedOperationException: class redefinition failed: attempted to change the schema (add/remove fields)
	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)
	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:201)
	at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.createMock(InlineByteBuddyMockMaker.java:182)
	at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35)
	at org.mockito.internal.MockitoCore.mock(MockitoCore.java:63)
	at org.mockito.Mockito.mock(Mockito.java:1729)
	at org.mockito.Mockito.mock(Mockito.java:1642)
	... 43 more

Issue Analytics

State:
Created 6 years ago
Reactions:3
Comments:9 (2 by maintainers)

Top GitHub Comments

1reaction

raniejadecommented, Nov 5, 2017

I’m also unable to mock a final class, I’m using JDK 9 and the project is using kotlin. I’m not sure if it’s a related issue, I did try to do some debugging but to no avail. Interestingly, only the first mock fails.

try {
    mock<WorldContext>()
} catch (e: Throwable) {

}
// success
val a = mock<WorldContext>()

Complete stacktrace:

Mockito cannot mock this class: class io.polymorphicpanda.faux.ecs.WorldContext.
Can not mock final classes with the following settings :
 - explicit serialization (e.g. withSettings().serializable())
 - extra interfaces (e.g. withSettings().extraInterfaces(...))

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 io.polymorphicpanda.faux.ecs.WorldContext, interface io.polymorphicpanda.faux.ecs.Context]
org.mockito.exceptions.base.MockitoException: 
Mockito cannot mock this class: class io.polymorphicpanda.faux.ecs.WorldContext.
Can not mock final classes with the following settings :
 - explicit serialization (e.g. withSettings().serializable())
 - extra interfaces (e.g. withSettings().extraInterfaces(...))

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 io.polymorphicpanda.faux.ecs.WorldContext, interface io.polymorphicpanda.faux.ecs.Context]
	at io.polymorphicpanda.faux.ecs.WorldSpec$1$worldContext$2.invoke(WorldSpec.kt:91)
	at io.polymorphicpanda.faux.ecs.WorldSpec$1$worldContext$2.invoke(WorldSpec.kt:18)
	at org.jetbrains.spek.engine.lifecycle.LifecycleAwareAdapter.invoke(LifecycleAwareAdapter.kt:21)
	at org.jetbrains.spek.engine.lifecycle.LifecycleAwareAdapter.getValue(LifecycleAwareAdapter.kt:17)
	at io.polymorphicpanda.faux.ecs.WorldSpec$1$world$2.invoke(WorldSpec.kt:37)
	at io.polymorphicpanda.faux.ecs.WorldSpec$1$world$2.invoke(WorldSpec.kt:18)
	at org.jetbrains.spek.engine.lifecycle.LifecycleAwareAdapter.invoke(LifecycleAwareAdapter.kt:21)
	at org.jetbrains.spek.engine.lifecycle.LifecycleAwareAdapter.getValue(LifecycleAwareAdapter.kt:17)
	at io.polymorphicpanda.faux.ecs.WorldSpec$1$1.invoke(WorldSpec.kt:40)
	at io.polymorphicpanda.faux.ecs.WorldSpec$1$1.invoke(WorldSpec.kt:18)
	at org.jetbrains.spek.engine.SpekTestEngine$Collector$action$action$1.invoke(SpekTestEngine.kt:175)
	at org.jetbrains.spek.engine.SpekTestEngine$Collector$action$action$1.invoke(SpekTestEngine.kt:133)
	at org.jetbrains.spek.engine.Scope$Action.execute(Scope.kt:48)
	at org.jetbrains.spek.engine.Scope$Action.execute(Scope.kt:32)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:83)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$2(HierarchicalTestExecutor.java:92)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
	at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:430)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:92)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$2(HierarchicalTestExecutor.java:92)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
	at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
	at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:430)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:92)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:51)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:43)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:170)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:154)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:90)
	at org.jetbrains.spek.tooling.runner.junit.JUnitPlatformSpekRunner.run(JUnitPlatformSpekRunner.kt:107)
	at org.jetbrains.spek.tooling.MainKt.main(Main.kt:58)
Caused by: org.mockito.exceptions.base.MockitoException: Could not modify all classes [class java.lang.Object, class io.polymorphicpanda.faux.ecs.WorldContext, interface io.polymorphicpanda.faux.ecs.Context]
	at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:138)
	at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:346)
	at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:161)
	at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:355)
	... 52 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$WithInlineExpunction.findOrInsert(TypeCache.java:355)
	at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.mockClass(TypeCachingBytecodeGenerator.java:32)
	at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.createMockType(InlineByteBuddyMockMaker.java:200)
	at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.createMock(InlineByteBuddyMockMaker.java:181)
	at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35)
	at org.mockito.internal.MockitoCore.mock(MockitoCore.java:65)
	at org.mockito.Mockito.mock(Mockito.java:1821)
	... 52 more
Caused by: java.lang.ClassCircularityError: java/lang/WeakPairMap$Pair$Weak
	at java.base/java.lang.WeakPairMap$Pair.weak(WeakPairMap.java:201)
	at java.base/java.lang.WeakPairMap.putIfAbsent(WeakPairMap.java:123)
	at java.base/java.lang.Module.implAddReads(Module.java:396)
	at java.base/java.lang.Module.implAddReads(Module.java:357)
	at java.base/java.lang.System$2.addReads(System.java:2146)
	at java.base/jdk.internal.module.Modules.addReads(Modules.java:85)
	at java.base/java.lang.reflect.Proxy$ProxyBuilder.lambda$getDynamicModule$4(Proxy.java:884)
	at java.base/jdk.internal.loader.AbstractClassLoaderValue$Memoizer.get(AbstractClassLoaderValue.java:327)
	at java.base/jdk.internal.loader.AbstractClassLoaderValue.computeIfAbsent(AbstractClassLoaderValue.java:203)
	at java.base/java.lang.reflect.Proxy$ProxyBuilder.getDynamicModule(Proxy.java:875)
	at java.base/java.lang.reflect.Proxy$ProxyBuilder.mapToModule(Proxy.java:814)
	at java.base/java.lang.reflect.Proxy$ProxyBuilder.<init>(Proxy.java:631)
	at java.base/java.lang.reflect.Proxy$ProxyBuilder.<init>(Proxy.java:636)
	at java.base/java.lang.reflect.Proxy.lambda$getProxyConstructor$0(Proxy.java:415)
	at java.base/jdk.internal.loader.AbstractClassLoaderValue$Memoizer.get(AbstractClassLoaderValue.java:327)
	at java.base/jdk.internal.loader.AbstractClassLoaderValue.computeIfAbsent(AbstractClassLoaderValue.java:203)
	at java.base/java.lang.reflect.Proxy.getProxyConstructor(Proxy.java:413)
	at java.base/java.lang.reflect.Proxy.newProxyInstance(Proxy.java:999)
	at java.base/sun.reflect.annotation.AnnotationParser$1.run(AnnotationParser.java:305)
	at java.base/sun.reflect.annotation.AnnotationParser$1.run(AnnotationParser.java:303)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/sun.reflect.annotation.AnnotationParser.annotationForMap(AnnotationParser.java:303)
	at java.base/sun.reflect.annotation.AnnotationParser.parseAnnotation2(AnnotationParser.java:293)
	at java.base/sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:120)
	at java.base/sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:72)
	at java.base/java.lang.reflect.Executable.declaredAnnotations(Executable.java:605)
	at java.base/java.lang.reflect.Executable.declaredAnnotations(Executable.java:603)
	at java.base/java.lang.reflect.Executable.getDeclaredAnnotations(Executable.java:591)
	at java.base/java.lang.reflect.Constructor.getDeclaredAnnotations(Constructor.java:579)
	at net.bytebuddy.description.method.MethodDescription$ForLoadedConstructor.getDeclaredAnnotations(MethodDescription.java:912)
	at net.bytebuddy.description.method.MethodDescription$AbstractBase.asToken(MethodDescription.java:695)
	at net.bytebuddy.description.method.MethodDescription$AbstractBase.asToken(MethodDescription.java:334)
	at net.bytebuddy.description.method.MethodList$AbstractBase.asTokenList(MethodList.java:53)
	at net.bytebuddy.dynamic.scaffold.InstrumentedType$Factory$Default$1.represent(InstrumentedType.java:223)
	at net.bytebuddy.ByteBuddy.redefine(ByteBuddy.java:698)
	at net.bytebuddy.ByteBuddy.redefine(ByteBuddy.java:676)
	at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.transform(InlineBytecodeGenerator.java:167)
	at java.instrument/java.lang.instrument.ClassFileTransformer.transform(ClassFileTransformer.java:246)
	at java.instrument/sun.instrument.TransformerManager.transform(TransformerManager.java:188)
	at java.instrument/sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:550)
	at java.base/java.lang.WeakPairMap$Pair.weak(WeakPairMap.java:201)
	at java.base/java.lang.WeakPairMap.putIfAbsent(WeakPairMap.java:123)
	at java.base/java.lang.Module.implAddReads(Module.java:396)
	at java.base/java.lang.Module.implAddReads(Module.java:357)
	at java.base/java.lang.System$2.addReads(System.java:2146)
	at java.base/jdk.internal.module.Modules.addReads(Modules.java:85)
	at java.base/jdk.internal.module.Modules.transformedByAgent(Modules.java:166)
	at java.instrument/sun.instrument.InstrumentationImpl.retransformClasses0(Native Method)
	at java.instrument/sun.instrument.InstrumentationImpl.retransformClasses(InstrumentationImpl.java:157)
	at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.triggerRetransformation(InlineBytecodeGenerator.java:117)
	... 65 more

0reactions

brahinetscommented, Aug 22, 2018

@mockitoguy The same issue was reproduced for mocking Aspose library classes (com.aspose). Lib was compiled via aspose-jdk1.6. aspose-jdk1.6 can be added to observed classes list in exception info

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