Bug 103423

Summary:	Calling document.createEvent("TrackEvent") should throw a NOT_SUPPORTED_ERR error.
Product:	WebKit	Reporter:	Antoine Quint <graouts>
Component:	DOM	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	abarth, ahmad.saleem792, annevk, eric.carlson, graouts, ian, webkit-bug-importer, webkit
Priority:	P2	Keywords:	InRadar, WPTImpact
Version:	Safari 9
Hardware:	All
OS:	All
URL:	http://w3c-test.org/dom/nodes/Document-createEvent.html

Description Antoine Quint 2012-11-27 08:44:44 PST

We're failing the Opera-submitted test at http://w3c-test.org/html/tests/submission/Opera/media/interfaces/TrackEvent/createEvent.html.

We fail to throw the NOT_SUPPORTED_ERR error when calling document.createEvent('TrackEvent'). I believe this is a broader WebCore issue that we don't follow the latest DOM spec that this method should only be used for legacy events. See http://dom.spec.whatwg.org/#dom-document-createevent.

Comment 1 Radar WebKit Bug Importer 2012-11-27 08:45:02 PST

<rdar://problem/12758230>

Comment 2 Adam Barth 2012-11-27 11:32:13 PST

http://dom.spec.whatwg.org/#dom-document-createevent says that we should be able to create any sort of supported event via this API.

Comment 3 Ian 'Hixie' Hickson 2012-11-27 11:58:56 PST

Adam, I think you're misreading the algorithm. (Though I don't really understand why it's specced that way.)

Comment 4 Adam Barth 2012-11-27 12:40:25 PST

Ah, yes.  Thanks.  That's quite different from the behavior we have currently.

Comment 5 Chris Rebert 2016-02-25 11:26:31 PST

Still not spec compliant.
Relevant, more general DOM testcase: http://w3c-test.org/dom/nodes/Document-createEvent.html

Comment 6 Chris Rebert 2016-02-25 13:41:08 PST

Corresponding Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=569690

Comment 7 Lucas Forschler 2019-02-06 09:18:43 PST

Mass move bugs into the DOM component.

Comment 8 Ahmad Saleem 2023-10-07 15:47:56 PDT

If I go by TextTrack - https://wpt.fyi/results/html/semantics/embedded-content/media-elements/interfaces/TrackEvent/createEvent.html?label=master&label=experimental&aligned=&q=createevent

^ Safari Technology Preview 180 is passing above.

If I go by 'DOM', we have following now on WPT:

https://wpt.fyi/results/dom?label=master&label=experimental&aligned=&q=createevent

^ In above, Safari / WebKit is still failing few test cases.

Comment 9 Anne van Kesteren 2023-12-19 06:50:11 PST

This particular instance was fixed at the end of 2015 by Darin.

*** This bug has been marked as a duplicate of bug 151931 ***