Assert failed depending on Decimal part

[flavienaudin]

Hi,

I have a really weird behavior that I can explain. With this Schematron (issued form a more complexe one) :

<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
    <pattern>
        <rule context="//CrossIndustryInvoice">
            <assert id="BR-CO-16-a" flag="fatal" test="(xs:decimal( DuePayableAmount) = xs:decimal( GrandTotalAmount) - xs:decimal( TotalPrepaidAmount))">
                DuePayableAmount = GrandTotalAmount - TotalPrepaidAmount
            </assert>
        </rule>
    </pattern>
</schema>

This XML failed :

<?xml version="1.0" encoding="UTF-8"?>
<CrossIndustryInvoice>
    <GrandTotalAmount>2138.28</GrandTotalAmount>
    <TotalPrepaidAmount>100.00</TotalPrepaidAmount>
    <DuePayableAmount>2038.28</DuePayableAmount>
</CrossIndustryInvoice>

instead this one is OK :

<?xml version="1.0" encoding="UTF-8"?>
<CrossIndustryInvoice>
    <GrandTotalAmount>2138.29</GrandTotalAmount>
    <TotalPrepaidAmount>100.00</TotalPrepaidAmount>
    <DuePayableAmount>2038.29</DuePayableAmount>
</CrossIndustryInvoice>

Only the decimal part changes.

Is that possible for you to investigate ?

[wvbe]

Hey @flavienaudin, thank you for reporting the issue!

Unfortunately my spare time has shrunk drastically since publishing this open source module, and I've been "out of this" for a while now. I don't expect that I can get back into it really any time soon to look into it.

Rounding issues are sometimes very peculiar, and to be honest Javascript is not very good at decimals. It's possible that, almost randomly, Javascript thinks that 2138.28 - 100.00 = 2023.2800000000001. I would probably accept a PR if you find that some library or another helps resolve this issue.

Sorry that I cannot do more for you in the short term!

[flavienaudin]

Finally, I found an alternative to NodeSchematron, faster.
Thank you for the response.

[wvbe]

That's good news @flavienaudin. Would you mind sharing your find? It might help someone else out too!

[flavienaudin]

I use https://hub.docker.com/r/easybill/en16931-validator