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RE: Two Specs and Test Suite

From: David Lee <David.Lee@marklogic.com>
Date: Mon, 27 Feb 2012 12:46:31 -0800
To: Noah Mendelsohn <nrm@arcanedomain.com>, Robin Berjon <robin@berjon.com>
CC: Jeni Tennison <jeni@jenitennison.com>, W3C XML-ER Community Group <public-xml-er@w3.org>
Message-ID: <EB42045A1F00224E93B82E949EC6675E16ADCEF375@EXCHG-BE.marklogic.com>
We can probably borrow from others for this.  I know the XProc group has a framework
I use a framework for testing xmlsh (makes use of http://www.xmlsh.org/CommandXcmp ) and there are others.   I think we could rely on the existence of text based XML compare tools which compare equivalent documents without having to dig too deeply.

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David Lee
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> -----Original Message-----
> From: Noah Mendelsohn [mailto:nrm@arcanedomain.com]
> Sent: Monday, February 27, 2012 3:43 PM
> To: Robin Berjon
> Cc: Jeni Tennison; W3C XML-ER Community Group
> Subject: Re: Two Specs and Test Suite
> 
> 
> 
> On 2/27/2012 3:24 PM, Robin Berjon wrote:
> > On Feb 27, 2012, at 21:09 , Jeni Tennison wrote:
> >> >  Therefore, I propose that we do both. Further, I'm happy to edit the
> declarative-style specification unless there's someone else who wants to do
> it. Are there any objections to that as a way forward?
> > +1!
> >
> >> >  We will also need a test suite, and it sounds as if one that is based on
> the XML result of an ER parse would be easiest to manage and most
> generally useful. Does anyone have any suggestions about how best to
> manage and maintain one?
> > I think that the hard part in testing this is to do so in a manner that is
> friendly to both browser and batch environments. In the former, the easiest
> is to run assertions against the DOM that's produced, but in the latter it's
> likely to produce some form of canonical version (which doesn't have to be
> C14N - for instance PYX has historically been great for testing) or use some
> form of XML diff facility.
> >
> > I don't think that there are any in-browser XML diff facilities, and it's not
> clear that there's a reliable XML serialiser we could use there. The simplest
> might therefore be to use PYX-based reference interpretations and those
> could be compared in either situation. But that's just one way that it could
> work and is entirely based on what I assume implementers will find most
> useful.
> 
> It occurs to me that, at least for testing purposes, the XML
> Canonicalization specification [1] may be a useful building block. I
> suspect one might have to add a few rules beyond what it standardizes, but
> if you serialize two DOMs and then canonicalize, you're probably pretty far
> along toward having strings that can be compared character-for-character.
> Of course, if we decide to specify XML-ER at the source level after all,
> then one can skip the serialization step, and for texting just use
> C14N(suitably enhanced) and string compare.
> 
> Just a thought.
> 
> Noah
> 
> 
> [1] http://www.w3.org/TR/xml-c14n
Received on Monday, 27 February 2012 20:47:05 GMT

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