<Swing Dev> [jdk17] RFR: 8269269: [macos11] SystemIconTest fails with ClassCastException

[Phil Race]

On Wed, 30 Jun 2021 19:19:24 GMT, Alexander Zuev <kizune at openjdk.org> wrote:

>>> No, the native code will fail to load the icon
>> So what call will fail? Is the "sf.getIcon()" return null? in what line of code?
>
> Yes, from my remote debugging it happens in sf.getIcon() but the circumstances are quite rare - file has to be inaccessible and the user's GUI session should not be initialized - that's why this failure only happens on headless testing. Another solution would be to mark this test as headful - that would solve issue as well.

I am a bit surprised the tests for this are not already headful. I can imagine all sorts of platform reasons why making them headless is not testing the "real" use case making the tests less than useful.
Ever seen a hidpi  headless system ??

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PR: https://git.openjdk.java.net/jdk17/pull/178