402129 - DOM document fragments are unsuccessful as XPath context nodes

Status: RESOLVED WONTFIX

(Core :: DOM: Core & HTML, defect)

Description

[Alex Vincent [:WeirdAl]]

Spin off from xpath generator bug, and from DOM Range bug 332148.  When a document fragment node is the context node of an XPath, evaluating the XPath fails, even when it's a "." path.

The test is currently in this file, but disabled:
http://bonsai.mozilla.org/cvsblame.cgi?file=mozilla/extensions/xpath-generator/test/unit/test_bug319768.js&rev=1.1&mark=286-308#286

Comment 1

[Peter Van der Beken [:peterv]]

From http://www.w3.org/TR/2004/NOTE-DOM-Level-3-XPath-20040226/xpath.html#XPathEvaluator-evaluate :

contextNode of type Node
... must be a Document, Element, Attribute, Text, CDATASection, Comment, ProcessingInstruction, or XPathNamespace node.

Comment 2

[Alex Vincent [:WeirdAl]]

Well, that stinks.  It basically means this bug is invalid.  It also means that my test for xpathgen needs fixing.  Patch coming to fix the test.

Comment 3

[Alex Vincent [:WeirdAl]]

On second thought, this bug probably is valid, but against XPath Generator for allowing document fragment context nodes.

Also, adding a simple check for what type of error it throws causes me lots of grief... moments like this I wish I really had done this as a mochitest...

Comment 4

[Alex Vincent [:WeirdAl]]

Marking wontfix - XPath Generator didn't survive into 1.9.1 code, and I don't see anyone resurrecting it in Mozilla code.