Re: [xsl] How do you ensure that data is not altered/corrupted in a transformation?

["Liam R. E. Quin liam@xxxxxxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

On Fri, 2023-05-19 at 08:37 +0000, Roger L Costello costello@xxxxxxxxx
wrote:
> Hi Folks,
>
> In certain domains loss of life may occur if data is
> altered/corrupted in any way.
>
> Suppose you write an XSLT program which transforms this:
>
> <alt>12000 feet</alt>
>
> to this:
>
> <altitude>12000 feet</altitude>

Or you changed

<alt unit="feet">1200</alt>
into
<alt unit="metres">1200</alt>
which might not be seen in a text comparison...

So you have to write tests. Round-tripping can mask errors, and writing
tests with the same software used for transforms can also mask errors.
There is no single complete answer.



--
Liam Quin,B https://www.delightfulcomputing.com/
Available for XML/Document/Information Architecture/XSLT/
XSL/XQuery/Web/Text Processing/A11Y training, work & consulting.
Barefoot Web-slave, antique illustrations: B http://www.fromoldbooks.org