New rule: image accessible name descriptive

[WilcoFiers]

Basic rule checking that images have a descriptive accessible name. This rule is a counterpart to Image not in the accessibility tree is decorative.

Need for Final Call: 2 weeks

[carlosapaduarte]

Mostly minor editorial changes. Good work!

[EmmaJP]

Subject to the changes Carlos has suggested, I'm happy for this to go ahead. I wondered if some of the inapplicable examples fail other rules and whether that should be acknowledged, but happy to leave that thought with the ACT-TF.

[Jym77]

Seconding @carlosapaduarte comments and adding a few more editorials.

[Jym77]

I think this is grammatically incorrect.
The subject of "describe" is here "images with an accessible name" and not just "accessible name". But the rule checks that the accessible name describes the purpose of the image

[EmmaJP]

"the topic or purpose" could refer to something else on the page, not necessarily the subject of the sentence or the rule. English is wonderful for misinterpretation. "their topic or purpose" is less likely to be misinterpreted.

Updated, please review

[Jym77]

I still read the subject of "describe" as being "images with an accessible name" and that makes the sentence very weird (at best).

[carlosapaduarte]

I agree with @Jym77
My suggestion: "This rule checks that an image's topic or purpose is described by its accessible name."
Other suggestion: "This rule checks that the accessible name of an image describes the image's topic or purpose."

[carlosapaduarte]

I agree with @Jym77
My suggestion: "This rule checks that an image's topic or purpose is described by its accessible name."
Other suggestion: "This rule checks that the accessible name of an image describes the image's topic or purpose."

[carlosapaduarte]

Not really sure that this is needed. The rule checks that the accessible name serves an equivalent purpose to the non-text content. How is identifying the language related?

Also, technically, you want to determine the language of the accessible name, not of the test target (which is an image, and, unless it's an image of text, won't have a language)

[Jym77]

Not really sure that this is needed. The rule checks that the accessible name serves an equivalent purpose to the non-text content. How is identifying the language related?

<img src="bread.jpg" aria-label="pain" /> may be good or bad depending whether the language is French or English.

updated, please check again

[carlosapaduarte]

I'm okay with the updated description.
Also, the assumption won't stop me from approving the rule, but I really do think that it is the language of the accessible name that needs to be determined, not of the image. That's why I'm still requesting changes.

Updated