RFR: 8327137: Add test for ConcurrentModificationException in BasicDirectoryModel

[Tejesh R]

On Tue, 19 Mar 2024 17:08:44 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

> > > Yes, it's running in 21 and 22 as well, so we'll see what happens there.
> > 
> > 
> > We got the following, once in jdk21u and once in jdk21u-dev on macintelx64 through the weekend:
> 
> Thank you, Christoph! @RealCLanger. At least one failure is detected. It's better than nothing, isn't it?

Definitely helpful. For these fixes - [JDK-8323670](https://bugs.openjdk.org/browse/JDK-8323670) and [JDK-8307091](https://bugs.openjdk.org/browse/JDK-8307091), the only way to debug was with code walkthrough. This test will help a lot even its able to reproduce intermittently according to me, especially to build some confidence for the fix.

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PR Comment: https://git.openjdk.org/jdk/pull/18109#issuecomment-2021869992