WCAG 2.0 success criteria without failures

Hello Michael,

As you know, the BenToWeb project has been creating test cases for 
WCAG 2.0. The third (and last) version of the BenToWeb test suite [1] 
was developed for the May 2007 working draft and contains just over 
600 test cases. Approximately 190 of these have been migrated to the 
TSD TF format and uploaded to the TSD TF repository [2].
Many of the test cases in the third version date back from our first 
test suite, which was based on the June 2005 working draft of WCAG 
2.0, so they were created before the publication of "Understanding 
WCAG 2.0" and "Techniques and Failures for WCAG 2.0". Many of these 
test cases do not map to any technique or failure defined by the WCAG 
WG; BenToWeb has many "failure" examples for which there is no 
corresponding WCAG failure. However, the TSD TF creates or accepts 
only test cases that map to a technique or failure defined by WCAG. 
This means that many BenToWeb test cases will not get migrated and 
uploaded to the TSD TF repository, unless the WCAG WG creates 
additional failures so that every success criterion has at least one 
failure [3].
(The above is my second "use case" for a fuller set of failures in 
WCAG 2.0 [4].)

The task force briefly discussed this issue during one of the 
previous TSD TF teleconferences and thought that adding all these 
failures would make the WCAG 2.0 Quick Reference [5] much heavier 
(and I got an action item to contact you about this [6]). To solve 
the usability issue that may result from the addition of more 
failures (and techniques), I think the quick reference could be 
adapted to filter failures separately. So my main concern is the lack 
of failures for many success criteria. Would it be possible to put 
this subject on the agenda of one of the next WCAG WG teleconferences?


[1] <http://www.bentoweb.org/XHTML1_TestSuite3>
[2] <http://www.w3.org/2006/tsdtf/TestSampleStatusList>
[3] In the May 2007 working draft, 29 out of 56 success criteria did 
not have a failure; in the December 2007 working draft, 30 out of 60 
success criteria don't have failures (including all of GL 3.1).
[4] For another use case, see "WCAG 2.0 failures and evaluation 
methodologies" (18 April):
    <http://lists.w3.org/Archives/Public/w3c-wai-gl/2007AprJun/0043.html>.
[5] <http://www.w3.org/WAI/WCAG20/quickref/20071211/>
[6] <http://www.w3.org/2007/10/30-tsdtf-minutes.html#action02>

Best regards,

Christophe


-- 
Christophe Strobbe
K.U.Leuven - Dept. of Electrical Engineering - SCD
Research Group on Document Architectures
Kasteelpark Arenberg 10 bus 2442
B-3001 Leuven-Heverlee
BELGIUM
tel: +32 16 32 85 51
http://www.docarch.be/ 


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Received on Monday, 17 December 2007 13:11:58 UTC