RFR: 8296330: Tests: Add layout container snapping tests [v2]

[Andy Goryachev]

On Mon, 7 Nov 2022 19:51:04 GMT, Marius Hanl <mhanl at openjdk.org> wrote:

>> modules/javafx.graphics/src/test/java/test/javafx/scene/layout/SnappingTest.java line 137:
>> 
>>> 135: 
>>> 136:         assertEquals(widthHeight + snappedPaddingX, container.prefWidth(-1), DELTA, className);
>>> 137:         assertEquals(widthHeight + snappedPaddingY, container.prefHeight(-1), DELTA, className);
>> 
>> sorry, should have specified in my previous comment - this constant is typically called EPSILON (a Greek letter denoting a very small number)
>
> While this is correct, the `assertEquals` method in JUnit calls this variable `delta`, so I think both namings are understandable and fine

Mathematically speaking, it is not a delta (change), it is a small quantity (epsilon).  it's a minor nit pick, but in this context it should be an EPSILON.

(There is one in TableUtil, but search in the code base and you'll find ~ 4K matches

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PR: https://git.openjdk.org/jfx/pull/936