RFR: 8169285: Re-enable javafx.swt tests

[Marius Hanl]

On Wed, 16 Apr 2025 19:00:53 GMT, Marius Hanl <mhanl at openjdk.org> wrote:

>> With this change, you can now run the `swt` tests as easy as: `:swt:test -PSWT_TEST=true`.
>> ![image](https://github.com/user-attachments/assets/928141b5-ac81-4b15-9d86-5ea87f47c1c4)
>> 
>> Note: At one point `IS_FULL_TEST` was used as well for the enablement of the tests. I don't see any reason for it, and one flag seems to be enough to me. But open for opinions on this one.
>
> Checking the GHA build, `IS_FULL_TEST` actually might be needed. Linux fails with `org.eclipse.swt.SWTError: No more handles [gtk_init_check() failed]` when creating the `Display`.

> @Maran23 what platforms did you test this on? Windows?

Yes, Windows 11.

> change its default to "false" on macOS ("true" otherwise)

Yes this seems like a good idea, I think it is more clean to have the definition where the property is (with the conditional for MacOS), instead of the `test{}` block, as you also suggested.

I want to check the tests on MacOS (See if I can figure out why they fail) and Linux (checkout `testImageCursor`) if time permits, but I might not be able to make it.

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PR Comment: https://git.openjdk.org/jfx/pull/1783#issuecomment-2834610822