RFR: 8339170: ☂ Convert tests to JUnit 5

[Kevin Rushforth]

On Fri, 11 Apr 2025 20:36:48 GMT, Marius Hanl <mhanl at openjdk.org> wrote:

> Note: I could not get the :swt tests to compile/test, in order to run the tests.
> I need some guidance here how to instruct Gradle to compile this module (and if I need anything else? like swt?).

The build downloads the needed SWT libraries into `build/libs/swt-debug.jar`.  The swt tests are disabled by default. You could try running the tests with `-PSWT_TEST=true` although that might not be sufficient, since it's been a while since anyone has run them.

> Also, this probably needs an extra ticket in the JBS?

Yes. Please file one and link it in JBS as "Blocks" [JDK-8339170](https://bugs.openjdk.org/browse/JDK-8339170)
. Then change the title of this PR to the new bug.

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PR Comment: https://git.openjdk.org/jfx/pull/1774#issuecomment-2798025693