On Fri, Jun 18, 2021 at 5:44 PM Ian Turton <ijtur...@gmail.com> wrote:

> I've got some code to handle the look up, the hard bit is finding
> somewhere to test it as I need a EPSG authority to test against so I can
> put the test in gt-referencing but gt-epsg-hsql has no depedency on gt-main
> where JTS.transform lives and I can't directly inspect a coordinate
> transform to see what the parameters are!
>

But you can test that it's transforming well known points with a given
accuracy, shouldn't that be enough?

If not, can't you cast the transformation to the expect type, take apart
the bits of ConcatenatedTransform (it has public fields!)
until you reach the MolondeskyTransform, gets its parameter group, and
check they are the expected ones?
Just thinking out loud, don't know if it's doable.

Cheers
Andrea

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