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. ------------- Commit messages: - JDK-8244297 Changes: https://git.openjdk.java.net/jfx/pull/204/files Webrev: https://webrevs.openjdk.java.net/jfx/204/webrev.00 Issue: https://bugs.openjdk.java.net/browse/JDK-8244297 Stats: 322 lines in 5 files changed: 225 ins; 69 del; 28 mod Patch: https://git.openjdk.java.net/jfx/pull/204.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/204/head:pull/204 PR: https://git.openjdk.java.net/jfx/pull/204
