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TCDL bug? (was Re: Database design)

From: Shadi Abou-Zahra <shadi@w3.org>
Date: Thu, 12 Feb 2009 22:43:37 +0100
Message-ID: <49949809.60208@w3.org>
To: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
CC: TSD TF <public-wai-ert-tsdtf@w3.org>

Hi Christophe, all,

Christophe Strobbe wrote:
> At 17:46 12/02/2009, Shadi Abou-Zahra wrote:
>> Christophe Strobbe wrote:
>>> At 13:53 12/02/2009, Shadi Abou-Zahra wrote:
>>>> Christophe Strobbe wrote:
>>>>> At 21:06 11/02/2009, Shadi Abou-Zahra wrote:
>>>>>> Ref: <http://www.w3.org/WAI/ER/tests/WebInterface/Mockups/tables>
>>>>>> <snip />
>>>>> Tests table:
>>>>> Does the current design support test samples that reference more 
>>>>> than one technique? If the Tech column allows only a single 
>>>>> technique ID (as opposed to a list), can the Test ID column be 
>>>>> unique? We may need a key that is based on Test ID + Tech ID.
>>>> No. The idea is that each test sample maps to exactly one technique. 
>>>> Is this not the case?
>>> Sometimes a success criterion can be met by a single technique, but 
>>> sometimes one needs a combination of techniques.
>>> I tried to dig up earlier discussions on this subject and found:
>>> * 
>>> <http://lists.w3.org/Archives/Public/public-wai-ert-tsdtf/2006Oct/0072.html> 
>>> (31 October 2006),
>>>   which also uses the above rationale, and
>>> * 
>>> <http://lists.w3.org/Archives/Public/public-wai-ert-tsdtf/2006Nov/0047.html> 
>>> (30 November 2006),
>>>   in a thread about choosing a data model to implement the above in 
>>> the TCDL 2.0 schema.
>>> I hope I haven't missed anything.
>> Yes, a technique can map to several success criteria and a success 
>> criteria could be addressed by more than one technique. But this is 
>> not the point here. Am I missing something?
>> Each *test sample* maps to exactly one *technique*. Correct?
> The "expectedResult" contains a pass or fail statement that is based on 
> whether the test file(s) pass(es) or fail(s) the success criterion 
> identified by the "rule" element. If a combination of techniques is 
> required to pass a success criterion, test samples that pass such a 
> success criterion will also reference more than one technique.

Oh boy! Hope we are not identifying such a bug at this stage...

How can a *test file* pass or fail a success criterion? The expected 
result should be that of the test procedure of a technique. These in 
turn map to one or more success criteria each.


Shadi Abou-Zahra - http://www.w3.org/People/shadi/ |
   WAI International Program Office Activity Lead   |
  W3C Evaluation & Repair Tools Working Group Chair |
Received on Thursday, 12 February 2009 21:44:13 UTC

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