Check doc-cover for the cover image

[laudrain]

Please provide the following details if possible or relevant:

• [1.1.1] the version of Ace impacted by the issue (as returned by the ace -v command).
• [] the version of Node used to run Ace (as returned by the node -v command).
• [] your operating system and version.
• [] if the issue is a bug when running Ace: the error message as produced in the log file (you can enable debug logging with the --verbose option).
• [] if the issue is about the HTML report: the browser(s) and version(s) you used.
• [] if possible, let us know if you can share a sample input file to help us reproduce the issue.

Following the mapping in "EPUB Type to ARIA Role Authoring Guide", we have to put a role doc-cover for the EPUB cover image. That image is declared explicitly in the manifest with the property "cover-image". Ace should verify that the img tag for that specific image has the role "doc-cover" and report a violation if not.

[rdeltour]

Ace should verify that the img tag for that specific image has the role "doc-cover" and report a violation if not.

We can add that to the feature request backlog. It would definitely be in the "best practice" bucket however, as it's not really an accessibility violation if doc-cover isn't present.

[arthicleo]

• Version: 1.2.2
• NPM Version: 6.14.13
• Windows 365

While validating the EPUB file using the latest ACE version, we are getting an error when there is no alt text for cover image. Not sure if having an alt text for cover image is mandatory. Also the error message displayed for this issue is pointing to 'missing role="doc-cover" attribute' which is not correct. Please refer the attached report screenshot, where the cover image coding is correct, still getting an error.

Either the mandatory alt text rule for cover image should be removed or the error message has to be updated.

[danielweck]

@arthicleo I added a unit test to cover the case you described: https://github.com/daisy/ace/commit/0b97b098605ee663741320cf2e27d98518e6ce3a Note that you must use role=presentation (or none) if you have an empty or missing alt attribute (or aria-label, title etc.). Conversely, if you are using role=doc-cover you must specify accessible text.