Bug 268620 – SVGStyleSheet tests fails while CSSOM passes on `StyleSheet_property_values`

• Status: RESOLVED
• Resolution: FIXED
• Component: SVG

[Ahmad Saleem]

Hi Team,

While looking into WPT Test cases failure, I noticed that we fail `SVG` one while passing CSS one.

So just raising so we can investigate and fix it.

WPT Test Case (Live Link) - http://wpt.live/svg/styling/style-sheet-interfaces.svg

WPT Test Case: https://wpt.fyi/results/svg/styling/style-sheet-interfaces.svg?label=master&label=experimental&aligned

Thanks!

[Ahmad Saleem]

Interesting stuff in Web-standard:

https://drafts.csswg.org/cssom/#requirements-on-user-agents-implementing-the-xml-stylesheet-processing-instruction

[Ahmad Saleem]

We do fail on `ownerNode` and if I look into `CSSStyleSheet` Interface:

https://drafts.csswg.org/cssom/#the-stylesheet-interface

Web-Spec says:

readonly attribute (Element or ProcessingInstruction)? ownerNode;

While we have:

readonly attribute Node ownerNode;

___

We don't have it nullable and also not taking ProcessingInstruction into account. I know in the past, I learnt that ProcessingInstruction is also node type. So it is covered by Node but I remember looking into Mozilla Firefox and Chromium / Blink and it was nullable at least.

[Radar WebKit Bug Importer]

<rdar://problem/122574381>

[Ahmad Saleem]

Pull request: https://github.com/WebKit/WebKit/pull/59770

[EWS]

Committed 308980@main (f54bd14d6787): <https://commits.webkit.org/308980@main>

Reviewed commits have been landed. Closing PR #59770 and removing active labels.