[code-reflection] RFR: Update compiler tests to use JUnit instead of TestNG [v3]

[Maurizio Cimadamore]

On Mon, 15 Sep 2025 22:56:30 GMT, Mourad Abbay <mabbay at openjdk.org> wrote:

>> Update compiler tests to use JUnit instead of TestNG.
>
> Mourad Abbay has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Swap arguments of assertEquals to match JUnit spec.

Marked as reviewed by mcimadamore (Reviewer).

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PR Review: https://git.openjdk.org/babylon/pull/566#pullrequestreview-3251470997