Compile and test with java 11 and jupiter

Thanks @regrog. I’ll take a look in a moment. In the meantime, you could take a look at these examples of mrJar being applied in other multi-module projects:

• The mrJar-ified version of the Gradle Guide’s modular Java 9 Storyteller Application
• Paul Bakker’s mrJar-ified gradle-modules-plugin-example
• Multi-module Group-compilation with --module-source-path & JavaFX — uses Composite Builds

You should be able to get an idea from those project’s build.gradles how to setup your project. But I will download your project and see what I can see regarding your problem running tests.

I really appreciate your helping me troubleshoot the plugin, regrog. Much appreciated