- From: Shadi Abou-Zahra <shadi@w3.org>
- Date: Thu, 31 Jan 2019 13:43:28 +0100
- To: Alistair Garrison <alistair.garrison@levelaccess.com>, Accessibility Conformance Testing <public-wcag-act@w3.org>
- Cc: Wilco Fiers <wilco.fiers@deque.com>
Thanks Alistair. I raised an issue on GitHub and added a suggestion: - https://github.com/w3c/wcag-act/issues/327 Best, Shadi On 31/01/2019 10:37, Alistair Garrison wrote: > Hi, > > After re-reading the full document > (https://pr-preview.s3.amazonaws.com/w3c/wcag-act/pull/322.html) I note > one change. The definition of Atomic Rule includes an idea which > conflicts with the “expectation” concept described later. > > The Atomic Rule definition (copied below for ease) is: > > */Atomic rules/* describe how to test a specific type of solution. It > contains a precise definition of what elements, nodes or other "parts" > of a test subject > <https://pr-preview.s3.amazonaws.com/w3c/wcag-act/pull/322.html#test-subject> are > to be tested, and when the test subject is considered to fail the rule. > These rules are to be kept small and /atomic/. This means that atomic > rules test a single "failure condition", and do so without using the > findings > <https://pr-preview.s3.amazonaws.com/w3c/wcag-act/pull/322.html#finding> from > other rules. > > The issue is – atomic rules test a single “failure condition”. This > should be changed to – atomic rules test a “single expected outcome”… > > Why? If we look at all examples rules we see they all describe positive > expected outcomes; definitely not “failure conditions” e.g. > > 1. Video elements have a transcript > 2. Video elements have an audio description > 3. Video elements have a description track > 4. This rule checks that the HTML page has a title > 5. Etc… > > Yes, a late stage find – but, something which other reviewers would pull up. > > All the best > > Alistair > > Alistair Garrison > > Director of Accessibility Research > > Level Access > -- Shadi Abou-Zahra - http://www.w3.org/People/shadi/ Accessibility Strategy and Technology Specialist Web Accessibility Initiative (WAI) World Wide Web Consortium (W3C)
Received on Thursday, 31 January 2019 12:43:33 UTC