RFR: 8273617: UninitializedDisplayModeChangeTest.java times out on macOS 12 [v3]

[Phil Race]

On Sun, 21 Sep 2025 11:43:28 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

>> Test used to timeout even though it seems the test passed..Increased the timeout to a safe value as sometimes it shows elapsed time to timeout > 300secs in macOS in CI and also ensured the wait-time for child process to execute the test is not been waiting endlessly.
>> Also ensured the original display mode is resetted after the test to prevent affecting following tests.
>> 
>> Tried 100 iterations of the fix on all platforms which is ok
>
> Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove displayMode reset

Marked as reviewed by prr (Reviewer).

test/jdk/java/awt/FullScreen/UninitializedDisplayModeChangeTest/DisplayModeChanger.java line 59:

> 57:             });
> 58:             try {
> 59:                 Thread.sleep(1000);

Usually I would do Robot.waitForIdle() and then Robot.delay(1000)
But if you say it passed 50 times, then maybe this is enough.

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PR Review: https://git.openjdk.org/jdk/pull/27365#pullrequestreview-3254462727
PR Review Comment: https://git.openjdk.org/jdk/pull/27365#discussion_r2369748802