Mockito: Mockito issue with Java11

[Raghu290]

Having similar issue with mockito and Java 11. Unable to mock any class/interface, do we need implement any method for class loading,since defineclass method removed in Java11 ? I even edited my java.policy for assertion exception.
https://dzone.com/articles/jdk-11-and-proxies-in-a-world-past-sunmiscunsafe
http://hg.openjdk.java.net/jdk9/hs/jdk/rev/0d2ab72ba600
mockito -2.21.0,
bytebuddy-1.8.15

Below is the exception:
org.mockito.exceptions.base.MockitoException:

Mockito cannot mock this class: class com.xxx.xxx.toolkit.config.Configuration.

Mockito can only mock non-private & non-final classes.
If you're not sure why you're getting this error, please report to the mailing list.

Java : 11
JVM vendor name : Oracle Corporation
JVM vendor version : 11-ea+26
JVM name : Java HotSpot(TM) 64-Bit Server VM
JVM version : 11-ea+26
JVM info : mixed mode
OS name : Mac OS X
OS version : 10.13.4

Underlying exception : java.lang.IllegalStateException: Error invoking java.lang.invoke.MethodHandles$Lookup#defineClass
Caused by: java.lang.IllegalStateException: Error invoking java.lang.invoke.MethodHandles$Lookup#defineClass
Caused by: java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "defineClass")

[MichaelKunze]

Had the same problem. Using mockito 2.23.0 did solve it for me!

[bric3]

Closing this one since it's resolved by updating mockito and bytebuddy versions.

[SailReal]

Using version 2.24.0 I'm having the same Issue. When I downgrade to 2.23.0 it works as expected.

List mockedList = mock(List.class);

Throws:

org.mockito.exceptions.base.MockitoException: 
Mockito cannot mock this class: interface java.util.List.

Mockito can only mock non-private & non-final classes.
If you're not sure why you're getting this error, please report to the mailing list.


Java               : 11
JVM vendor name    : Oracle Corporation
JVM vendor version : 11.0.2+9
JVM name           : OpenJDK 64-Bit Server VM
JVM version        : 11.0.2+9
JVM info           : mixed mode
OS name            : Mac OS X
OS version         : 10.14.3


Underlying exception : java.lang.IllegalArgumentException: Could not create type

    at de.skymatic.sync_client.communication.Request.KarteCheckTest.testKarteCheck(KarteCheckTest.java:19)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    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$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.lang.IllegalArgumentException: Could not create type
    at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:154)
    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:32)
    at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMockType(SubclassByteBuddyMockMaker.java:71)
    at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMock(SubclassByteBuddyMockMaker.java:42)
    at org.mockito.internal.creation.bytebuddy.ByteBuddyMockMaker.createMock(ByteBuddyMockMaker.java:25)
    at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35)
    at org.mockito.internal.MockitoCore.mock(MockitoCore.java:62)
    at org.mockito.Mockito.mock(Mockito.java:1896)
    at org.mockito.Mockito.mock(Mockito.java:1805)
    ... 23 more
Caused by: java.lang.NoSuchMethodError: net.bytebuddy.dynamic.loading.MultipleParentClassLoader$Builder.appendMostSpecific(Ljava/util/Collection;)Lnet/bytebuddy/dynamic/loading/MultipleParentClassLoader$Builder;
    at org.mockito.internal.creation.bytebuddy.SubclassBytecodeGenerator.mockClass(SubclassBytecodeGenerator.java:83)
    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:152)
    ... 34 more

[TimvdLippe]

@SailReal Your version of ByteBuddy is not up-to-date. Make sure you use the latest version of ByteBuddy that is specified in the Mockito pom (1.9.7): http://central.maven.org/maven2/org/mockito/mockito-core/2.24.0/mockito-core-2.24.0.pom