On Tue, 22 Mar 2022 17:59:15 GMT, Brent Christian <bchri...@openjdk.org> wrote:

> Please review this change to the java/util/prefs/AddNodeChangeListener.jar 
> test.
> 
> Although the test specifies "-Djava.util.prefs.userRoot=." to ensure a fresh 
> Preferences on each test run, MacOS does not seem to honor this, and still 
> stores prefs in Library/.
> 
> This test has long suffered intermittent failures. 8255031 added some 
> debugging code; as of that change, the test fails fast as soon as an expected 
> change event is not received. In particular, if the expected event is not 
> received for adding the node, the test exits without removing the node. In 
> this way, on Mac, the node can get "stuck" in the preferences of the machine. 
> Future runs on the machine will already have the node, no node added change 
> event will be generated (because the node was already there), the test will 
> continue to fail without removing the node, etc. This matches observations on 
> some CI machines.  
> 
> This change ensures that:
> * the test node is not present before the test
> * the test runs to completion, including removing the test node
> * the test node is not left behind after the test
> 
> Thanks.

This pull request has now been integrated.

Changeset: 656cba7a
Author:    Brent Christian <bchri...@openjdk.org>
URL:       
https://git.openjdk.java.net/jdk/commit/656cba7af376d6460202591230ac95d2366de9f3
Stats:     70 lines in 1 file changed: 30 ins; 17 del; 23 mod

8283349: Robustness improvements to java/util/prefs/AddNodeChangeListener.jar

Reviewed-by: dfuchs, naoto, lancea

-------------

PR: https://git.openjdk.java.net/jdk/pull/7908

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