[JENA-2149] Java18 JDK + Mockito causes problems

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Done
• Fix Version/s: Jena 4.2.0
• Assignee: Andy Seaborne
• Reporter: Andy Seaborne
• Created: 13/Aug/21 20:36
• Updated: 16/Sep/21 11:26
• Resolved: 01/Sep/21 14:56

Description

Java18 is showing a problem with mockito in jena-core contract tests, jena-permissions and jena-querybuilder.

They look similar - some kind of mockito init problem:

...
Caused by: java.lang.NullPointerException: Cannot invoke "org.mockito.internal.configuration.plugins.PluginRegistry.getStackTraceCleanerProvider()" because "org.mockito.internal.configuration.plugins.Plugins.registry" is null

The "cannot invoke" changes - the "org.mockito.internal.configuration.plugins.Plugins.registry" is null does not.

One example:

https://ci-builds.apache.org/job/Jena/job/Jena_JDK18/org.apache.jena$jena-core/3/testReport/org.apache.jena.graph.impl/SimpleEventManager_CS/testGeneralEvent_GraphEventManagerContractTest_/

tests:

https://ci-builds.apache.org/job/Jena/job/Jena_JDK18/org.apache.jena$jena-permissions/3/testReport/

https://ci-builds.apache.org/job/Jena/job/Jena_JDK18/org.apache.jena$jena-core/3/testReport/

https://ci-builds.apache.org/job/Jena/job/Jena_JDK18/org.apache.jena$jena-querybuilder/3/testReport/

The dependency is mockito 3.11.2 (which is latest : 2021-06-21).

I didn't find any online reports of problems nor a report at the mockito project on github.

This is only on our java18 build - the other JDK versions pass.