Unable to attach debugger to a unit test

[Elpaggio]

Thanks a lot for a great project! I enjoy the fact that it is now possible to use VSCode to develop and especially debug Kotlin applications.

I know that currently there are no Kotlin test runner and code lens integration in VSCode like with ordinary java projects.
However I had hoped that I could use a "poor mans" workaround instead using the Gradle test task wiith the --debug-jvm option in order to attach the kotlin-debug-adapter and break on a breakpoint set in the unit test.

You can clone the demo project from here:
https://github.com/Elpaggio/kotlin-demo.git

./gradlew --info cleanTest test --debug-jvm

Unfortunately I receive some errors:

[INFO] main Connected to client
[INFO] async1 Attaching JVM debug session on localhost:5005
[TRACE] async1 Updating threads
[TRACE] async1 Updating breakpoints
[DEBUG] eventBus VM Event: VMStartEvent in thread main
[DEBUG] eventBus VM Event: ThreadStartEvent in thread main
[TRACE] async1 Configured debuggee listeners
[DEBUG] eventBus VM Event: ThreadStartEvent in thread /127.0.0.1:50766 to /127.0.0.1:38619 workers
[DEBUG] eventBus VM Event: ThreadStartEvent in thread /127.0.0.1:50766 to /127.0.0.1:38619 workers Thread 2
[DEBUG] eventBus VM Event: ThreadStartEvent in thread /127.0.0.1:50766 to /127.0.0.1:38619 workers Thread 3
[DEBUG] eventBus VM Event: ClassPrepareEvent in thread Test worker
[TRACE] eventBus Setting breakpoint at prepared type com.example.demo.DemoApplicationTests
[DEBUG] eventBus VM Event: ClassPrepareEvent in thread Test worker
[TRACE] eventBus Setting breakpoint at prepared type com.example.demo.DemoApplicationTests
2
[DEBUG] eventBus VM Event: [email protected]:9 in thread Test worker
[ERROR] server Internal error: java.lang.reflect.InvocationTargetException
[ERROR] java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
[ERROR] at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$null$0(GenericEndpoint.java:67)
[ERROR] at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.request(GenericEndpoint.java:120)
[ERROR] at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleRequest(RemoteEndpoint.java:261)
[ERROR] at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:190)
[ERROR] at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:192)
[ERROR] at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
[ERROR] at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:99)
[ERROR] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
[ERROR] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[ERROR] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[ERROR] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[ERROR] at java.base/java.lang.Thread.run(Thread.java:829)
[ERROR] Caused by: java.lang.reflect.InvocationTargetException
[ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[ERROR] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

Attaching the kotlin-debug-adapter to the Gradle run task works fine however

./gradlew run --debug-jvm

System information:

[weilbith]

Hey guys ✌️
Does this mean there is an easy way to just start kotlin-debug-adapter and then use gradle test —debug-jvm for easy debugging tests in a Gradle project?