Integrated: 8244297: Provide utility for testing for memory leaks

[Florian Kirmaier]

On Sun, 3 May 2020 21:39:41 GMT, Florian Kirmaier <fkirmaier at openjdk.org> wrote:

> It's based on the discussion of my previous PR: https://github.com/openjdk/jfx/pull/71
> 
> I Added test utility class copied from JMemoryBuddy and used it to simplify 4 of the existing unit tests.
> 
> It's a direct copy of my project [JMemoryBuddy](https://github.com/Sandec/JMemoryBuddy) without any changes.
> I'm also using it in most of the projects I'm involved with and in my experience, the tests with this Library are very stable. I can't remember wrong test results. Sometimes the memory behaviour of some libraries itself is not stable but the tests with JMemoryBuddy are basically always correct.

This pull request has now been integrated.

Changeset: 1a113344
Author:    Florian Kirmaier <fkirmaier at openjdk.org>
Committer: Ambarish Rapte <arapte at openjdk.org>
URL:       https://git.openjdk.java.net/jfx/commit/1a113344
Stats:     427 lines in 5 files changed: 329 ins; 70 del; 28 mod

8244297: Provide utility for testing for memory leaks

Reviewed-by: kcr, arapte

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PR: https://git.openjdk.java.net/jfx/pull/204