[External] : Re: Issues running SwingNodeJDialogTest on Linux

[Kevin Rushforth]

Glad the problem is understood, and you were able to find a fix.

-- Kevin

On 12/17/2023 4:39 PM, Martin Fox wrote:
> I was running the tests using the default JDK 19 supplied by Ubuntu. In that environment AWT loads GTK 2 and then JavaFX throws an exception.
>
> The hang occurs after the test times out. The cleanup code calls Util.shutdown() which eventually calls into Platform.runLater(). The code in PlatformImpl.java then waits forever on the startupLatch which will never reach zero because of the exception thrown earlier.
>
> I switched to Java SE 19 where AWT loads GTK 3, JavaFX has no complaints, and the test proceeds.
>
> Thanks,
> Martin
>
>> On Dec 15, 2023, at 1:35 PM, Kevin Rushforth <kevin.rushforth at oracle.com> wrote:
>>
>> Hmm. That's odd. you could pass "-Djdk.gtk.verbose=true" and see what's happening on the GTK loading side. Both AWT and JavaFX will print some info if that system property it set.
>>
>> To find out where the test process is hung you can use "jstack PID". If the test itself is hung, then that test would be a good candidate for adding a timeout parameter to the "@Test" tag.
>>
>> -- Kevin
>>
>>
>> On 12/15/2023 11:36 AM, Martin Fox wrote:
>>> I’m having an issue with one of the robot tests on my Linux machine. Before I dig any further I could use some guidance on where to look.
>>>
>>> I’m running Ubuntu 22.04 on ARM64 (in a Parallels VM). The command line I’m using is:
>>>
>>> bash ./gradlew -PFULL_TEST=true -PUSE_ROBOT=true :systemTests:test --tests SwingNodeJDialogTest
>>>
>>> The truly puzzling behavior is that the test never stops executing. I’ve got it running right now and it says it’s been executing for over 40 minutes. Shouldn’t the testing framework time this out?
>>>
>>> Under the hood I believe that the Glass code in launcher.c is detecting that a GTK 2 library is already loaded so it bails. From what I can tell both JavaFX and Swing should default to GTK 3 so that’s also puzzling.
>>>
>>> Any help would be appreciated.
>>>
>>> Thanks,
>>> Martin