RFR: 8274296: Update or Problem List tests which may fail with uiScale=2 on macOS

[Phil Race]

On Fri, 24 Sep 2021 18:09:38 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

>> As described in https://bugs.openjdk.java.net/browse/JDK-8274106 a number of tests fail due to some inaccuracy in pixels copied from the screen when scaling down from device space to user space.
>> The subject of most of these tests is such that uiScale isn't important and we can have them pass with -Dsun.java2d.uiScale=1.
>> For the rest we can problem list them - as narrowly as we can on macos-aarch64 which is the only place we've seen the problem (not happening on retina displays with x64 it seems) whilst we try to figure out the root cause which is either in Apple code or something we are doing to trigger that Apple API misbehaviour.
>
> test/jdk/java/awt/Dialog/SiblingChildOrder/SiblingChildOrderTest.java line 29:
> 
>> 27:  * @summary [macosx] Order of overlapping of modal dialogs is wrong
>> 28:  * @key headful
>> 29:  * @run main/othervm -Dsun.java2d.uiScale=1 SiblingChildOrderTest
> 
> Switching this tests to scale=1 seems completely wrong. On macos it just tweak the rendering so that bug became invisible due to lost of precision. And now we will run the tests in lowDPI on all other platforms.

If really needed I can file a follow-on to change this test to problem listed on macOS like some of the others .. but this test doesn't look to me like its a pixel precision test ...

-------------

PR: https://git.openjdk.java.net/jdk/pull/5687