Mockito fails with inlined mocks enabled with Invalid paramter name exception
22,390
Solution 1
I got around this by upgrading to the latest version of mockito. Currently it is:
testImplementation "org.mockito:mockito-core:2.25.1"
After that I had some build errors which was resolved by selecting
File->Invalidate Caches / Restart...
Solution 2
Try using the newest version of ByteBuddy:
<dependency>
<groupId>net.bytebuddy</groupId>
<artifactId>byte-buddy</artifactId>
<version>1.8.11</version>
</dependency>
I have tried this with Mockito Inline 2.15.0 and it has resolved the same issue with my application. It appears as though this is a known issue and has been resolved in the newest version of ByteBuddy.
Solution 3
Use below dependency in pox.xml file and update maven project
<dependency>
<groupId>net.bytebuddy</groupId>
<artifactId>byte-buddy</artifactId>
<version>LATEST</version>
</dependency>
Right click on Project -> click on maven -> click on Update Project -> force update snapshot
Solution 4
In my case I had a slightly different error, And changing JDK from 16 to 11 helped, not sure yet why it didn't work on 16
- Compiled by older versions of scalac
- Classes that are part of the Android distribution
at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.triggerRetransformation(InlineBytecodeGenerator.java:280)
at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.mockClass(InlineBytecodeGenerator.java:213)
at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.lambda$mockClass$0(TypeCachingBytecodeGenerator.java:47)
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:152)
at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:365)
at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:174)
at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:376)
at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.mockClass(TypeCachingBytecodeGenerator.java:40)
at org.mockito.internal.creation.bytebuddy.InlineDelegateByteBuddyMockMaker.createMockType(InlineDelegateByteBuddyMockMaker.java:391)
at org.mockito.internal.creation.bytebuddy.InlineDelegateByteBuddyMockMaker.doCreateMock(InlineDelegateByteBuddyMockMaker.java:351)
at org.mockito.internal.creation.bytebuddy.InlineDelegateByteBuddyMockMaker.createMock(InlineDelegateByteBuddyMockMaker.java:330)
at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.createMock(InlineByteBuddyMockMaker.java:58)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:53)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:84)
at org.mockito.Mockito.mock(Mockito.java:1964)
at org.mockito.internal.configuration.MockAnnotationProcessor.processAnnotationForMock(MockAnnotationProcessor.java:66)
at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:27)
at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:24)
at org.mockito.internal.configuration.IndependentAnnotationEngine.createMockFor(IndependentAnnotationEngine.java:45)
at org.mockito.internal.configuration.IndependentAnnotationEngine.process(IndependentAnnotationEngine.java:73)
at org.mockito.internal.configuration.InjectingAnnotationEngine.processIndependentAnnotations(InjectingAnnotationEngine.java:74)
at org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAnnotationEngine.java:48)
at org.mockito.MockitoAnnotations.openMocks(MockitoAnnotations.java:82)
at org.mockito.internal.framework.DefaultMockitoSession.<init>(DefaultMockitoSession.java:43)
at org.mockito.internal.session.DefaultMockitoSessionBuilder.startMocking(DefaultMockitoSessionBuilder.java:83)
... 48 more
Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 60
at net.bytebuddy.jar.asm.ClassReader.<init>(ClassReader.java:196)
at net.bytebuddy.jar.asm.ClassReader.<init>(ClassReader.java:177)
at net.bytebuddy.jar.asm.ClassReader.<init>(ClassReader.java:163)
at net.bytebuddy.utility.OpenedClassReader.of(OpenedClassReader.java:86)
at net.bytebuddy.dynamic.scaffold.TypeWriter$Default$ForInlining.create(TypeWriter.java:3824)
at net.bytebuddy.dynamic.scaffold.TypeWriter$Default.make(TypeWriter.java:2166)
at net.bytebuddy.dynamic.scaffold.inline.RedefinitionDynamicTypeBuilder.make(RedefinitionDynamicTypeBuilder.java:224)
at net.bytebuddy.dynamic.scaffold.inline.AbstractInliningDynamicTypeBuilder.make(AbstractInliningDynamicTypeBuilder.java:123)
at net.bytebuddy.dynamic.DynamicType$Builder$AbstractBase.make(DynamicType.java:3595)
at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.transform(InlineBytecodeGenerator.java:393)
at java.instrument/java.lang.instrument.ClassFileTransformer.transform(ClassFileTransformer.java:244)
at java.instrument/sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at java.instrument/sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:565)
at java.instrument/sun.instrument.InstrumentationImpl.retransformClasses0(Native Method)
at java.instrument/sun.instrument.InstrumentationImpl.retransformClasses(InstrumentationImpl.java:168)
at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.triggerRetransformation(InlineBytecodeGenerator.java:276)
... 72 more```
Comments
-
mekazu over 2 years
I've enabled inlined mocks so that I can mock final classes but now I get the following exception when running tests with Junit.
When I run all the tests at once only two tests fail, but if I run tests individually then most of them fail.
I'm not using any scala or android classes (that I'm aware of). I am using lombok but I tried removing lombok annotations any it didn't fix the problem.
When removing mock-maker-inline the problem goes away, but I'd rather keep it.
How should I address this problem?
org.mockito.exceptions.base.MockitoException: Mockito cannot mock this class: class com.example.MyClass. If you're not sure why you're getting this error, please report to the mailing list. Java : 1.8 JVM vendor name : Oracle Corporation JVM vendor version : 25.112-b15 JVM name : Java HotSpot(TM) 64-Bit Server VM JVM version : 1.8.0_112-b15 JVM info : mixed mode OS name : Windows 10 OS version : 10.0 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 [interface java.lang.AutoCloseable, class com.example.MyClass, interface java.io.Closeable, class java.lang.Object] at org.mockito.internal.junit.JUnitRule$1.evaluate(JUnitRule.java:42) at org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:239) at org.junit.rules.RunRules.evaluate(RunRules.java:20) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) 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$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:539) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:761) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:461) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:207) Caused by: org.mockito.exceptions.base.MockitoException: Could not modify all classes [interface java.lang.AutoCloseable, class com.example.MyClass, interface java.io.Closeable, class java.lang.Object] at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:138) at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:346) at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:161) at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:355) ... 18 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$WithInlineExpunction.findOrInsert(TypeCache.java:355) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.mockClass(TypeCachingBytecodeGenerator.java:32) at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.createMockType(InlineByteBuddyMockMaker.java:200) at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.createMock(InlineByteBuddyMockMaker.java:181) at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35) at org.mockito.internal.MockitoCore.mock(MockitoCore.java:65) at org.mockito.Mockito.mock(Mockito.java:1821) at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:36) at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:16) at org.mockito.internal.configuration.IndependentAnnotationEngine.createMockFor(IndependentAnnotationEngine.java:38) at org.mockito.internal.configuration.IndependentAnnotationEngine.process(IndependentAnnotationEngine.java:62) at org.mockito.internal.configuration.InjectingAnnotationEngine.processIndependentAnnotations(InjectingAnnotationEngine.java:57) at org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAnnotationEngine.java:41) at org.mockito.MockitoAnnotations.initMocks(MockitoAnnotations.java:69) ... 18 more Caused by: java.lang.IllegalStateException: Error invoking java.lang.reflect.Executable#getParameters at net.bytebuddy.description.method.ParameterDescription$ForLoadedParameter$Dispatcher$ForJava8CapableVm.getParameter(ParameterDescription.java:387) at net.bytebuddy.description.method.ParameterDescription$ForLoadedParameter$Dispatcher$ForJava8CapableVm.isNamePresent(ParameterDescription.java:355) at net.bytebuddy.description.method.ParameterDescription$ForLoadedParameter.isNamed(ParameterDescription.java:227) at net.bytebuddy.description.method.ParameterDescription$AbstractBase.asToken(ParameterDescription.java:147) at net.bytebuddy.description.method.ParameterDescription$AbstractBase.asToken(ParameterDescription.java:107) at net.bytebuddy.description.method.ParameterList$AbstractBase.asTokenList(ParameterList.java:80) at net.bytebuddy.description.method.MethodDescription$AbstractBase.asToken(MethodDescription.java:693) 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$1.represent(InstrumentedType.java:223) at net.bytebuddy.ByteBuddy.redefine(ByteBuddy.java:698) at net.bytebuddy.ByteBuddy.redefine(ByteBuddy.java:676) at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.transform(InlineBytecodeGenerator.java:167) at sun.instrument.TransformerManager.transform(TransformerManager.java:188) at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:428) at sun.instrument.InstrumentationImpl.retransformClasses0(Native Method) at sun.instrument.InstrumentationImpl.retransformClasses(InstrumentationImpl.java:144) at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.triggerRetransformation(InlineBytecodeGenerator.java:117) ... 38 more Caused by: java.lang.reflect.MalformedParametersException: Invalid parameter name "" at java.lang.reflect.Executable.verifyParameters(Executable.java:386) at java.lang.reflect.Executable.privateGetParameters(Executable.java:416) at java.lang.reflect.Executable.getParameters(Executable.java:357) at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at net.bytebuddy.description.method.ParameterDescription$ForLoadedParameter$Dispatcher$ForJava8CapableVm.getParameter(ParameterDescription.java:383) ... 55 moreUsing mockito-core 2.13.0 and byte-buddy 1.7.9.