RFR: 8158801: [TEST_BUG] Mixing tests fail because of focus workaround trick [v18]

[Khalid Boulanouare]

On Tue, 12 Aug 2025 15:03:04 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> Khalid Boulanouare has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Updates CountDownLatch waiting time to one second
>
> test/jdk/java/awt/Mixing/AWT_Mixing/SimpleOverlappingTestBase.java line 169:
> 
>> 167:                 throw new RuntimeException("Ancestor frame didn't receive " +
>> 168:                         "focus");
>> 169:             }
> 
> The same comments as for `GlassPaneOverlappingTestBase.java`.
> 
> The latch may never release because you don't call its `countDown` method if `ancestor` is `null`. Can `ancestor` be `null`?

It looks for me that ancestor could never be null. All components (Including embedded frame test) reside in a frame. But, to be on the safe side, I will include the case where ancestor could be null, in case this occurs.

Same for GlassPaneOverlappingTestBase.java, if component support resizing. I will add code to release the latch.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25971#discussion_r2279515856