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Bug 1657700 [wpt PR 24907] - Update tests for forced breaks at fragmentainer start., a=testonly 

Automatic update from web-platform-tests
Update tests for forced breaks at fragmentainer start.

If there's a forced break, and it's at a valid class A breakpoint, we
may break there. There's nothing in the spec suggesting otherwise.

This is working correctly in the LayoutNG fragmentation engine, but not
in the legacy engine (where we require some non-zero block-size content
to allow forced breaks). Remove invalid tests, and add a couple of valid
ones.

Bug: 1100849
Change-Id: I1829a00a4e9761906ebe4536ded9c994f4737e69
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2339663
Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Alison Maher <almaher@microsoft.com>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795604}

--

wpt-commits: c7c27f9106d063ad4764aacdef5cb472c4be676e
wpt-pr: 24907
This commit is contained in:
Morten Stenshorne 2020-08-07 12:46:55 +00:00 коммит произвёл moz-wptsync-bot
Родитель 40343d4c30
Коммит 63f5f31bc4
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11
testing/web-platform/tests/css/css-break/forced-break-at-fragmentainer-start-000.html Normal file
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<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://www.w3.org/TR/css-break-3/#forced-breaks">
<link rel="help" href="https://www.w3.org/TR/css-break-3/#unforced-breaks">
<meta name="assert" content="A forced break at the block-start of the fragmentainer is allowed, as long as it's otherwise at a valid class A break point">
<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
<p>Test passes if there is a filled green square.</p>
<div style="columns:1; column-fill:auto; width:100px; height:100px; background:green;">
<div style="break-after:column;"></div>
<div style="height:99px; background:white;"></div>
</div>

12
testing/web-platform/tests/css/css-break/forced-break-at-fragmentainer-start-001.html Normal file
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<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://www.w3.org/TR/css-break-3/#forced-breaks">
<link rel="help" href="https://www.w3.org/TR/css-break-3/#unforced-breaks">
<meta name="assert" content="A forced break at the block-start of the fragmentainer is not allowed unless it's at a valid class A break point">
<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="columns:2; column-fill:auto; column-gap:0; width:100px; height:100px; background:red;">
<div>
<div style="break-before:column; height:200px; background:green;"></div>
</div>
</div>