RFR: JDK-8302618: [macOS] Problem typing uppercase letters with java.awt.Robot when moving mouse [v7]

[Harshitha Onkar]

On Mon, 24 Jul 2023 17:55:49 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

> If the user moves the mouse when Robot generates mouse events, it is expected to produce erroneous results because the mouse ends up in the wrong position when Robot issues further events — essentially it breaks the assumptions in the test.

Correct in case of Robot's mouse events + simultaneous manual/user mouse movement it leads to wrong position which causes tests to fail. But the case being fixed here consists of Robot keyEvents (NOT Robot's mouseEvents) + simultaneous  manual/user mouse movement.

> So, we should check whether the internal flags passed to the generated events remain valid. But it could be not as easy to verify as in this case.
> 
> Are mouse events affected if the user types text on the keyboard while Robot is moving the mouse? It's a mirrored scenario to the one described in the bug. The position of mouse remains intact, yet flags may change by concurrent keyboard input.

I see your point. I think based on what @mrserb and you have discussed, I see 3 cases here 

1. Robot mouse events + external manual mouse move- In this case user mouse events will cause the mouse to be at wrong position thus causing erroneous result as expected. And this is not a valid use case.

2. Robot key events + external manual mouse move - This is the case being fixed for accessibility keyboard use case.

3. Robot mouse events + external manual key events - As you mentioned this is a mirrored scenario and based on initial testing it works as expected - tested by automating mouse moves with Robot (without clicks or drag) and external key presses. I'll have to check the flag state in this case - at the starting of the test and at the end.

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PR Comment: https://git.openjdk.org/jdk/pull/14744#issuecomment-1648437392