@TalbotG @fantasai @frivoal I wonder if this test should be stored with other fragmentation tests rather than with multicol. I've got a whole bunch of multicol tests that relate to fragmentation which don't really have any multicol spec text to link to. Not sure how much it matters as long as they are somewhere but there are also already some multicol tests under css-break too https://github.com/web-platform-tests/wpt/tree/master/css/css-break

In my opinion, this test really checks how content distribution inside a multi-column container with 'column-fill: auto' can be affected and should be affected by 'widows'. So, it involves an interaction of 2 properties originating from 2 distinct specs. So, I think links to both specs should be listed.

whole bunch of multicol tests that relate to fragmentation (...) Not sure how much it matters

I think those multicol tests should have links to both specs but it is not a serious mistake if they have not. It does not matter very much as long as the tests are correct, reliable, trustworthy, testing something relevant, demonstrating an implementation failure, etc...

Yes @mstensho , this can be done, albeit the test will need to keep a minimum of text content:

http://www.gtalbot.org/BrowserBugsSection/CSS3Multi-Columns/columnfill-auto-widows-002-MStensho.html

http://www.gtalbot.org/BrowserBugsSection/CSS3Multi-Columns/reference/columnfill-auto-widows-002-MStensho-ref.html

In the 349b287 commit, I have improved the title text a bit, I included a text assert and I have removed alphabetic text and used instead only a digit along with an explicit line break. The reference file has been updated accordingly.

{
it doesn't really have anything in particular to do with multicol
}

The test demonstrates that content distribution among column boxes in the way/manner it is prescribed for 'column-fill: auto' can be affected, can be influenced by 'widows' property. The test is about the interaction of 2 distinct properties. In my opinion, it should have the link to
https://www.w3.org/TR/css-multicol-1/#filling-columns

{
this test would look good as css/css-break/widows-orphans-006.html
}

'orphans' is not tested, is not involved and is not "in play" in the test. Why the filename should have "orphans" in it then ... instead of "columnfill-auto" as of now?

Non-auto height and column-fill:auto is an excellent (and in many ways the only feasible one) way of explicitly setting the fragmentainer block-size. The rest of this test is pure block fragmentation. It just so happens that multicol is usually the best way of testing block fragmentation. We could write a printing test to achieve the same, but that's just more tedious.

You're right, though: it doesn't test orphans, just widows. So... css/css-break/widows-001.html

@mstensho
Okay. I will fix the test (later today) so that it does not link to the Multi-Column spec; link only to CSS Fragmentation level 3 Test.

{
So... css/css-break/widows-001.html
}

Already taken:
http://test.csswg.org/suites/css21_dev/20110323/html4/widows-001.htm

I am working on a test which will verify various combinations of both 'orphans' and 'widows' within an auto-height multi-column container. It will most likely use Ahem font and will comply with the 600px wide window viewport requirement. Draft test right now:

http://www.gtalbot.org/BrowserBugsSection/CSS3Break/widows-orphans-011.html

It will most likely be split in 2 tests (4 sub-tests per test).

[Edited]
The test
css/css-multicol/columnfill-auto-widows-002.html
and its reference
css/css-multicol/reference/columnfill-auto-widows-002-ref.html

will migrate to and will be filename-renamed as

css/css-break/widows-008.html
css/css-break/reference/widows-008-ref.html
in a few min.
[/Edited]

There are no reviewers for this pull request. Please reach out on W3C's irc server (irc.w3.org, port 6665) on channel #testing (web client) to get help with this. Thank you!

rename css/{css-multicol/reference/columnfill-auto-widows-002-ref.html => css-break/reference/widows-008-ref.html} (96%)

rename css/{css-multicol/columnfill-auto-widows-002.html => css-break/widows-008.html} (80%)