RFR: 8213531: Test javax/swing/border/TestTitledBorderLeak.java fails [v2]

[Phil Race]

On Thu, 28 Apr 2022 13:34:31 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

>> Test was failing in linux citing `java.lang.RuntimeException: Expected Total TitledBorder to be freed : 10 Freed 9 `
>> As per the fix done in JDK-8204963 http://hg.openjdk.java.net/jdk/jdk/rev/cd7d2f9154fd
>> there was no platform specific code done for the fix and logs in `TitledBorder.installPropertyChangeListeners` shows it was called 10 times for the test but `CleanerFactory.cleaner().register` action was only called 9 times in linux causing it to fail.
>> 
>> Modified the test to not show the frame which cause the problem to go away and also it can still be used as 8204963 regression test as it still fails without the fix and pass with it. Modified test has passed in all platforms for several iterations.
>> 
>> Also removed the deprecated `System.runFinalization`
>
> Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Test fix

Can you confirm we still need the Frame ? I mean when does the used-to-be-leaky listener get installed ?
If it is sufficient to add it to the panel and the panel doesn't need to be added to the frame then the test can be headless.
But we need to be sure that doesn't skip what we want to test.

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PR: https://git.openjdk.java.net/jdk/pull/8450