Support more recent XPath versions

[jhemelhof]

Problem to solve

We're dealing with a lot of legacy SOAP services for which we're creating Hurl validation requests. This works fine but assertions are a bit painful since we heavily rely on XPaths and Hurl only supports XPath 1.0 expressions.

Proposal

Support more recent XPath expression versions.

Additional context and resources

• The Azarro Specification supports up to XPath 3.1

Tasks to complete

• Support XPath 2.0 expressions
• Support XPath 3.0 expressions
• Support XPath 3.1 expressions

[jcamiel]

Hi @jhemelhof

Thanks for the issue. For XPath, we're using libxml2 that only supports XPath 1.0. So, for the moment, we won't be able to support XPath 2.0, 3.0 and 3.1.

That said, in Hurl syntax we have filters that could help writing assertions and capture. Would you be able to give XML samples and XPath expressions/use-cases that you're using today and that could be improved? With samples, we can see if we could improve things for theses use-cases,