RFR: 8335530: Java file extension missing in AuthenticatorTest

[Jaikiran Pai]

On Tue, 2 Jul 2024 08:55:28 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

> This trivial test was pushed without a .java file extension and none of us spotted this.
> 
> This change renames the test to add the proper file extension, converts it to use jupiter APIs instead of TestNG, and fixes a small mistake (s/principal.getName()/principal.getUsername()/).

Looks good to me.

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Marked as reviewed by jpai (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19984#pullrequestreview-2153293414