gecko-dev/testing/web-platform/tests/css/css-position/position-absolute-fieldset.html
Morten Stenshorne aa82058557 Bug 1564705 [wpt PR 17602] - Don't consider fieldsets as replaced content., a=testonly
Automatic update from web-platform-tests
Don't consider fieldsets as replaced content.

They should be treated as regular block containers, as far as sizing is
concerned. The LayoutNG out-of-flow positioning machinery treated
fieldsets as replaced (since it was told to), and ended up with an
incorrect inline-size.

A "side-effect" of this fix is that now that fieldsets are no longer
treated as replaced content, they can can also fragment inside multicol
containers or paged media - just like any other block-level container.
This is good. There should be no reason to prohibit fragmentainer
breaks inside fieldsets. Added a test for it, to assert the new
behavior.

Bug: 979523
Change-Id: I2fd73f8324d3207c5d12c500b5632f631468ab34
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1685096
Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#674096}

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wpt-commits: 727763fa27f9d8d36c1c337dc2ac52ac092c61f0
wpt-pr: 17602
2019-07-24 13:32:31 +01:00

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HTML

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://www.w3.org/TR/CSS22/visudet.html#abs-non-replaced-width">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="position:relative; width:100px; height:100px; background:red;">
<fieldset style="position:absolute; left:0; top:0; right:0; bottom:0; margin:0; border:none; background:green;"></fieldset>
</div>