About WCAG 2.0 Test Samples

• Minimal examples of Web content that demonstrate correct and incorrect implementations of the Web Content Accessibility Guidelines (WCAG) 2.0
• Aim is to provide a royalty-free collection of test samples that can be used by authoring tool, evaluation tool, user agent, and Web content developers
• Developed by a joint task force of the Evaluation and Repair Tools Working Group (ERT WG) and the Web Content Accessibility Guidelines Working Group (WCAG WG)
• Project only started fairly recently and focused on setting up a CVS repository, review process, a wiki tool, and metadata to describe the test samples
• Next phase will focus on collecting contributions from various organizations and providing a mechanism for public submission of contributions

Example WCAG 2.0 Guideline

From Guideline 1.3 Ensure that information and structure can be separated from presentation:

1.3.1 Information and relationships conveyed through presentation can be programmatically determined, and notification of changes to these is available to user agents, including assistive technologies. [How to meet 1.3.1]

Example WCAG 2.0 Success Criterion

Procedure from How to Meet Success Criterion 1.3.1:

• Key Terms
• Intent of this success criterion
• » Techniques for Addressing Success Criterion 1.3.1
• Benefits: How Success Criterion 1.3.1 helps people with disabilities
• Examples of Success Criterion 1.3.1

Example WCAG 2.0 Technique

From H73: Using the summary attribute of the table element to give an overview of data tables:

For each data table:

1. Check if a summary attribute is present for the table element.
2. If a summary is present, check that the summary attribute describes the table's organization or explains how to use the table.
3. Check if a caption element is present in the table element.
4. If both a summary attribute and a caption element are present, check that the summary does not duplicate the caption.

Example WCAG 2.0 Test Sample #1

From Test Sample sc1.3.1_l1_018:

<table>
  <tr><th>student name</th><th>student id</th></tr>
  <tr><td>John</td><td>1</td></tr>
  <tr><td>Chris</td><td>2</td></tr>
  <tr><td>George</td><td>3</td></tr>
</table>

The test case is intended to fail as there is no summary attribute for the data table.

Example WCAG 2.0 Test Sample #2

From Test Sample sc1.3.1_l1_019:

<table summary="This table shows the students details of the department.">
  <tr><th>student name</th><th>student id</th></tr>
  <tr><td>John</td><td>1</td></tr>
  <tr><td>Chris</td><td>2</td></tr>
  <tr><td>George</td><td>3</td></tr>
</table>

The test case is intended to pass as there is a summary attribute giving an overview of the data table.

About the Repository

The WCAG 2.0 Test Samples Repository currently has:

• Approximately 15 test samples submitted
• A few hundred more waiting in the queue
• A wiki tool for reviews and documentation
• Reusable test source code and metadata

Contribution to submit or review test samples is welcome!

About the Review Process

The review process of the Task Force has the following steps:

1. Step 1: Test Sample submission
2. Step 2: Review submitted files
3. Step 3: Peer-review of content
4. Step 4: Task Force strawpoll
5. Step 5: Task Force suggestion
6. Step 6: WCAG WG decision

About the Test Metadata

The WCAG 2.0 Test Samples Metadata is:

• Subset of the BenToWeb Test Case Description Language (TCDL) 2.0
• Based on the W3C Test Metadata framework for describing tests

It contains information to describe:

• Status and version information
• Required files and how to execute them
• Relationship to the guidelines and technologies

Future Work

• Collect contributions of test samples
• Encourage additional TF participation
• Provide mechanism for public submission
• Continue reviewing and publishing

Summary

• WCAG 2.0 provides a suitable framework for developing test samples
• Several organizations have already started to develop such tests
• Bringing this knowledge together will benefit the public at large
• Especially evaluation tool, authoring tool, and user agent developers
• Currently very early in the project and a lot of work still ahead
• Contribution and participation in the Task Force is welcome

Other W3C/WAI Presentations

• Transitioning Your Web Accessibility Project from WCAG 1.0 to WCAG 2.0
  Wednesday 3/21/2007 1:30:00 PM
  Hilton - Newport C
• Web Accessibility: Updating Your Policy and Management Plans for WCAG 2.0
  Saturday 3/24/2007 10:40:00 AM
  Hilton - Century A/B

Thank You!

Shadi Abou-Zahra, W3C/WAI
http://www.w3.org/People/shadi/
shadi@w3.org