I think Jay's point is that the test isn't at all about alpha,
so he chose to fix it by removing alpha which is equally as valid
as switching format.

-phil.

On 11/7/18, 11:17 AM, Sergey Bylokhov wrote:
Hi, Jay.

As far as I understand the "png" still support alpha,
and it is tested by this test?

On 07/11/2018 02:11, Jayathirth D V wrote:
Hello All,

Please review the following fix in JDK12 :

Bug : https://bugs.openjdk.java.net/browse/JDK-8176556

Webrev : http://cr.openjdk.java.net/~jdv/8176556/webrev.00/

Issue : When we run java/awt/dnd/ImageTransferTest/ImageTransferTest.java if fails to get ImageWriter(Service provider) capable of encoding JFIF format.

Root cause: Support for alpha channel in JPEG is removed in JDK-8204187 <https://bugs.openjdk.java.net/browse/JDK-8204187> and this causes DataTransferer to throw exception saying unable to get Service provided for ARGB channel in for Jpeg.

Solution : Use RGB image without Alpha channel. This regression test was written to verify image data before and after DnD, so removing alpha channel will not affect its purpose.

Thanks,

Jay



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