Acid2 fails the Acid2 test

December 20, 2007 · by Haavard

If you take the Acid2 test in any browser, you will notice that they all fail. This is not because all browsers suddenly stopped passing Acid2, but because of an error with the test itself.

Ian Hickson's comment in Mozilla's Bugzilla bug tracking system seems to indicate that it will be fixed after the new year, but in the meantime you can try a copy of the working Acid2 test over on Ian's site. The reason for the broken Acid2 test is also covered in the Bugzilla discussion:

It looks like an object element that's pointing to a non-existent page (http://www.webstandards.org/404/) should be falling through, but that page is now returning a response status of 200 (success) instead of 404.

Update 2007-12-22: It looks like this problem has been addressed, so the Acid2 test should be back to normal.

Readers' comments 8

Left under the original article, as archived.

WildEnteThursday, December 20, 2007 7:02:16 PM
so does IE8 pass Acid2 or the borked acid2? (c;=
AyushThursday, December 20, 2007 7:08:36 PM
@WildEnte- http://blogs.msdn.com/ie/archive/2007/12/19/internet-explorer-8-and-acid2-a-milestone.aspx#6816928
Originally posted by Arron -MSFT-:

.. Ian maintains a secondary copy on his site. http://www.hixie.ch/tests/evil/acid/002/

This copy seems to be working as expected in all browsers including IE8.
JaddFriday, December 21, 2007 3:42:22 PM
So why don't they say so on their front page?
Unregistered userSaturday, December 22, 2007 7:19:27 AM
Anonymous writes: Interestingly Opera 9.5 beta which has been released months ago "passes" borked Acid test... How can it be? I mean, if it is borked, there has to be some form of borkness or Opera also doing tricks like nVidia usually do on benchmark tests?
scipioSaturday, December 22, 2007 10:12:20 AM
Originally posted by anonymous:

How can it be? I mean, if it is borked, there has to be some form of borkness or Opera also doing tricks like nVidia usually do on benchmark tests?
Well, according to Haavard's post (my emphasis):
It looks like an object element that's pointing to a non-existent page (http://www.webstandards.org/404/) should be falling through, but that page is now returning a response status of 200 (success) instead of 404.

In other words, something got broken recently.
HaavardSaturday, December 22, 2007 10:28:02 AM
It works in 9.25 too, so it seems that Acid2 now works as it should.
Unregistered userThursday, July 17, 2008 11:01:23 AM
Anonymous writes: Seven months late... but for the Opera 9.50 release version, the "official" test currently fails, while the one at hixie doesn't.
HaavardThursday, July 17, 2008 11:12:45 AM
Yes, the test at webstandards.org fails again. However, this one works:

http://acid2.acidtests.org/