RFR: 8288989: Make tests not depend on the source code

[Jonathan Gibbons]

On Thu, 14 Dec 2023 11:42:39 GMT, Adam Sotona <asotona at openjdk.org> wrote:

> I don't have an access to any environment to test it, so I prefer the same solution as already applied in several similar situations across the JDK tests.

If you really wanted, you could test it locally, running `jtreg` directly (not through `make test`) and temporarily rename the `src` directory to something else, for the duration of your test run.

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PR Comment: https://git.openjdk.org/jdk/pull/16470#issuecomment-1856192601