RFR: 8298500: Create test to initially show stage with various attributes (iconified, maximized, full screen)

[Kevin Rushforth]

On Wed, 13 Sep 2023 15:31:15 GMT, Lukasz Kostyra <lkostyra at openjdk.org> wrote:

>> tests/system/src/test/java/test/robot/javafx/stage/AttributesTest.java line 56:
>> 
>>> 54:     private static final Color TOP_COLOR = Color.RED;
>>> 55: 
>>> 56:     private static final double TOLERANCE = 0.07;
>> 
>> just curious: how did we arrive at this value?
>
> I borrowed it from `IconifyTest.java` which most of this file is based on. Hard for me to say why is it exactly that.

This constant, with the same value of `0.07`, is repeated in most of our robot screen capture tests. It seems a good candidate for moving it to the `VisualTestBase` parent class, as a future test enhancement.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1240#discussion_r1326304679