RFR: JDK-8365424 : [macos26] java/awt/Frame/DisposeTest.java fails on macOS 26

[Harshitha Onkar]

On Wed, 1 Oct 2025 00:13:54 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

>> This test fails on macOS 26 due to slight color mismatch at background frame edges. A offset of 4 pixels is added as fix.
>> 
>> CI testing passes on other platforms.
>
> test/jdk/java/awt/Frame/DisposeTest.java line 42:
> 
>> 40:  * @summary Tests that disposing of a Frame with MenuBar removes all traces
>> 41:  *          of the Frame from the screen.
>> 42:  * @run main/othervm -Dsun.java2d.uiScale=1 DisposeTest
> 
> Why do you need to set scale factor=1, does the default break something?

It doesn't break as such but based on my observation a couple of previous test on windows fail when there is fractional scaling + color comparison at edges. Set the uiScale to 1 to make the test robust.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27585#discussion_r2393153313