Bug: axe-core/cli validator does not give warning about lack of aria-label or aria-labelledby on role="img" element(ARIA 1.2 )

[spectranaut]

Product: cli

Motivation:

ARIA 1.2 introduces the following imperative in the role="img" definition: In order for elements with a role of img to be perceivable, authors MUST provide a label using the aria-label or aria-labelledby attribute.

Replication of error:

If you run the AXE cli (axe-core 4.3.2 in chrome-headless) on an HTML with the following HTML::

<div id="img-1" role="img"></div>

<div id="img-2" role="img" title="Image 2 description"></div>

<div id="img-3" role="img">Image 3 description</div>

You will see the following errors:

  Violation of "role-img-alt" with 2 occurrences!
    Ensures [role='img'] elements have alternate text. Correct invalid elements at:
     - #img-1
     - #img-3
    For details, see: https://dequeuniversity.com/rules/axe/4.3/role-img-alt

Expectation:

Two errors:

1. You should see an error on all three, because none of the images have an "aria-label" or "aria-labelledby" attribute.
2. I think the error for this scenario should be under --tags cat.aria, but it is not, you see know errors if you run the CLI with --tags cat.aria

[Zidious]

Thank you for finding this issue!

I have raised this within axe-core ref: dequelabs/axe-core#3153