RFR: 8285295: Need better testing for IdentityHashMap [v4]

[Stuart Marks]

On Fri, 6 May 2022 16:59:16 GMT, Lance Andersen <lancea at openjdk.org> wrote:

>> Stuart Marks has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Add some assertions for entrySet.equals and keySet.equals
>
> I think you have done a nice job on the coverage.
> 
> It would be nice for future maintainers if you consider adding comments for all of the tests vs. a subset prior to pushing

Thanks @LanceAndersen I've added some comments.

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PR: https://git.openjdk.java.net/jdk/pull/8354