RFR: 8283245: Create a test for JDK-4670319

[Sergey Bylokhov]

On Tue, 29 Mar 2022 08:04:42 GMT, Srinivas Mandalika <smandalika at openjdk.org> wrote:

> Write an automated regression test for  JDK-4670319
> 
> Issue
> When a JTree node is expanded or collapsed, an Accessibility PropertyChange event is fired with the old state of "collapsed" and new state of "expanded" (or vice versa). The problem is that the source of the event is the AccessibeJTree, and not the AccessibleJTreeNode. This means that an assistive technology listening to this event is unable to report to the user what node was expanded/collapsed.
> 
> Fix
> Fix for [JDK-4670319](https://bugs.openjdk.java.net/browse/JDK-4670319) addresses the above issue.  When tree node is expanded/collapsed, PropertyChangeEventSource is the Node.
> This review is for a test for validating the above issue.
> 
> This review is for migrating tests from a closed test suite to open.
> 
> Testing:
> The test ran successfully on Mach5 with multiple runs (30) on windows-x64, linux-x64 and macos-x64.

test/jdk/javax/accessibility/4670319/AccessibleJTrePCESourceTest.java line 28:

> 26:  * @key headful
> 27:  * @bug 4670319
> 28:  * @summary AccessibleJTree should fire a PropertyChangeEvent using a AccessibleJTreeNode as source.

Please split the long lines, use the 80 chars per line.

test/jdk/javax/accessibility/4670319/AccessibleJTrePCESourceTest.java line 50:

> 48:             SwingUtilities.invokeAndWait(() -> createGUI());
> 49:             Robot robot = new Robot();
> 50:             robot.setAutoDelay(500);

Are you sure that the autodelay is needed here? The test does not use any method other than `waitForIdle`

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PR: https://git.openjdk.java.net/jdk/pull/8012