[code-reflection] RFR: Use JUnit instead of TestNG

[Maurizio Cimadamore]

On Mon, 15 Sep 2025 12:45:03 GMT, Mourad Abbay <mabbay at openjdk.org> wrote:

> > One area we need to pay special attention to is the order of arguments of assert methods. junit and testng switch the order actual and expected parameters of such methods.
> 
> Yes. But It won't affect the test result, right ?

In the case of assertEquals, probably not -- but it might result in confusing error messages. You might try to provoke a failure and compare before/after?

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PR Comment: https://git.openjdk.org/babylon/pull/566#issuecomment-3292123641