test phase fails in Mockito on Java 11

[ka2ddo]

When compiling ttorrent on Mac OS X with Java 11, the build fails at the default-test phase with the following error:

setUp(com.turn.ttorrent.network.keyProcessors.CleanupKeyProcessorTest) Time elapsed: 482 sec <<< FAILURE! org.mockito.exceptions.base.MockitoException: Mockito cannot mock this class: interface com.turn.ttorrent.network.ConnectionListener. 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 : 11.0.11+9-LTS-194 JVM name : Java HotSpot(TM) 64-Bit Server VM JVM version : 11.0.11+9-LTS-194 JVM info : mixed mode OS name : Mac OS X OS version : 10.15.7 Underlying exception : java.lang.UnsupportedOperationException: Cannot define class using reflection at com.turn.ttorrent.network.keyProcessors.CleanupKeyProcessorTest.setUp(CleanupKeyProcessorTest.java:30) Caused by: java.lang.UnsupportedOperationException: Cannot define class using reflection at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$Unavailable.defineClass(ClassInjector.java:821) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection.inject(ClassInjector.java:185) at net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default$InjectionDispatcher.load(ClassLoadingStrategy.java:187) at net.bytebuddy.dynamic.TypeResolutionStrategy$Passive.initialize(TypeResolutionStrategy.java:79) at net.bytebuddy.dynamic.DynamicType$Default$Unloaded.load(DynamicType.java:4456) at org.mockito.internal.creation.bytebuddy.SubclassBytecodeGenerator.mockClass(SubclassBytecodeGenerator.java:121) 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$WithInlineExpunction.findOrInsert(TypeCache.java:355) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.mockClass(TypeCachingBytecodeGenerator.java:32) at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMockType(SubclassByteBuddyMockMaker.java:71) at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMock(SubclassByteBuddyMockMaker.java:42) at org.mockito.internal.creation.bytebuddy.ByteBuddyMockMaker.createMock(ByteBuddyMockMaker.java:25) at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35) at org.mockito.internal.MockitoCore.mock(MockitoCore.java:65) at org.mockito.Mockito.mock(Mockito.java:1821) at org.mockito.Mockito.mock(Mockito.java:1734) ... 37 more Caused by: java.lang.IllegalStateException: Could not find sun.misc.Unsafe at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe$Dispatcher$Disabled.initialize(ClassInjector.java:1357) at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe.inject(ClassInjector.java:1193) at net.bytebuddy.dynamic.loading.ClassLoadingStrategy$ForUnsafeInjection.load(ClassLoadingStrategy.java:458) at net.bytebuddy.dynamic.TypeResolutionStrategy$Passive.initialize(TypeResolutionStrategy.java:79) at net.bytebuddy.dynamic.DynamicType$Default$Unloaded.load(DynamicType.java:4456) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$Indirect.make(ClassInjector.java:684) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$CreationAction.run(ClassInjector.java:302) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$CreationAction.run(ClassInjector.java:290) at java.base/java.security.AccessController.doPrivileged(Native Method) at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection.(ClassInjector.java:70) at net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default$InjectionDispatcher.load(ClassLoadingStrategy.java:184) ... 54 more Caused by: java.lang.NoSuchMethodException: sun.misc.Unsafe.defineClass(java.lang.String, [B, int, int, java.lang.ClassLoader, java.security.ProtectionDomain) at java.base/java.lang.Class.getMethod(Class.java:2108) at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe$Dispatcher$CreationAction.run(ClassInjector.java:1260) at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe$Dispatcher$CreationAction.run(ClassInjector.java:1248) at java.base/java.security.AccessController.doPrivileged(Native Method) at net.bytebuddy.dynamic.loading.ClassInjector$UsingUnsafe.(ClassInjector.java:1127) ... 63 more

Presumably, this is due to the module feature introduced in Java 9 to make it harder to probe other module's code that is not officially exposed as an API. Are there plans to upgrade to a newer version of mockito that can deal with this issue? I tried hacking the pom.xml file to use mockito 4.0.0 and the build succeeded.