CODEWITHSUNDEEP
javajunitmockitobyte-buddy
mekazu
mekazu

Reputation: 2705

Mockito fails with inlined mocks enabled with Invalid paramter name exception

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 more

Using mockito-core 2.13.0 and byte-buddy 1.7.9.

Upvotes: 38

Views: 81782

Answers (10)

Harry Coder
Harry Coder

Reputation: 2740

For me I had to comment (or delete) the exclusion part of mockito in spring-boot-test:

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <version>${spring.boot.version}</version>
        <scope>test</scope>
            <!--exclusions>
                <exclusion>
                    <groupId>org.mockito</groupId>
                    <artifactId>mockito-core</artifactId>
                </exclusion>
            </exclusions-->
   </dependency>

Upvotes: 0

tschumann
tschumann

Reputation: 3256

I had this issue in a Java 11 codebase that was still using Groovy 2.4 - I don't know what the exact issue was (something must have changed in Groovy 2.5 because Groovy 2.4 doesn't seem to work with Java 17) but removing the trait that was throwing the exception fixed the issue for me.

Upvotes: 1

Mahdi
Mahdi

Reputation: 1872

I got this error in Scala 3 when using the extension syntax inside a trait. The classes extending that trait cannot be mocked. Changing the syntax to the good old implicit class fixed the issue.

Upvotes: 1

Yuko
Yuko

Reputation: 41

In my case, it was because my enum class that I wanted to mock (not exactly me but...) had a constructor with parameters that was marked with @org.springframework.lang.NonNull and then it failed with ArrayIndexOutOfBoundsException in the byte-buddy. So removing that annotation fixed the issue... The End.

Upvotes: 1

Vitaly Chura
Vitaly Chura

Reputation: 870

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```

Upvotes: 4

codemonkey
codemonkey

Reputation: 489

In my case, I installed the latest Adopt OPENJDK and the problem resolved, (currently temurin-11.jdk.

Upvotes: 1

SagarMane
SagarMane

Reputation: 29

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

Upvotes: 2

Vaibhav Srivastava
Vaibhav Srivastava

Reputation: 19

for me adding

spring-boot-starter-web

dependency to my pom worked as the interface I was trying to mock was a part of the external jar that used feign client.

Upvotes: 0

DroidT
DroidT

Reputation: 3303

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...

Upvotes: 24

Justin Albano
Justin Albano

Reputation: 3949

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.

Upvotes: 11

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