Hi -

Have you looked at the PNGReadWriterTests in the GraphicsTests package? 
It has some 30+ tests for PNGReadWriter in a variety of situations.

Cheers,
   - Andreas

Jerome Peace wrote:
> Historical help needed: PNGReadWriter class test1
> 
> HI all,
> 
> In my code travels I have come across:
> 
>  'RAA 12/10/2000 10:11 PNGReadWriter class test1 {as
> yet unclassified}'
> 
> which has become lava code*.
>   
> It would probably be good to revive it as a test. I
> would like to know what was in the files it
> referenced. My curiosity wants to know if they were
> some specially tortuous or just ordinary files. ( My
> assistant Puck is hoping for tortuous. ;-)
> 
> I am also, at Puck's urging, looking for other files
> that would be a good test of a png read writer.
> 
> 
> the portion of the code that looks at files is here:
> 
> 
> 	d0 := FileDirectory default.
> 	d1 := d0 directoryNamed: 'PngSuite Folder'.
> 	d2 := d0 directoryNamed: 'BIG PNG'.
> 	{d0. d1. d2}.
> 	"keep compiler quiet"
> 	"==
> 	citrus_none_sub.png
> 	citrus_adm7_adap.png
> 	citrus_adm7_aver.png
> 	citrus_adm7_non.png
> 	citrus_adm7_paeth.png
> 	pngs-img-ie5mac.png
> 	=="
> 	fileInfo := {d2. {'citrus_adm7_adap.png'}}.
> 
> 
> Yours in service, and curiosity, --Jerome Peace
> 
> *lava code is code left over from historical times
> which has no use in the current image and yet no one
> is willing to take responsiblity for removing it.
> 
> 
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