RFR: 8289508: Improve test coverage for XPath Axes: ancestor, ancestor-or-self, preceding, and preceding-sibling [v4]

[Rahul Prabhu]

On Tue, 13 Sep 2022 05:23:20 GMT, Joe Wang <joehw at openjdk.org> wrote:

>> Rahul Prabhu has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   8289508: fixed whitespace
>
> It would be nice to cover some of the assertions made in the spec, e.g.:
> 2.2 Axes
>       ... if the context node is an attribute node or namespace node, the preceding-sibling axis is empty
>       
> 3.3 Node-sets
>             ...
>             NOTE: The meaning of a Predicate depends crucially on which axis applies. 
>             For example, preceding::foo[1] returns the first foo element in reverse document order, because the axis that applies to the [1] predicate is the preceding axis; by contrast, (preceding::foo)[1] returns the first foo element in document order, because the axis that applies to the [1] predicate is the child axis.
>             
> 5.7 Text Nodes
>       ... a text node never has an immediately following or preceding sibling that is a text node

@JoeWang-Java Added the tests you recommended, thanks for the suggestion.

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PR: https://git.openjdk.org/jdk/pull/10211