LibWeb: Import WPT position-absolute-013 test

Import the css-flexbox abspos position-absolute-013 test from WPT so we
can track its current behavior locally.

The imported baseline currently has 432 subtests total, with 228
passing and 204 still failing.
This commit is contained in:
Andreas Kling
2026-04-02 22:17:12 +02:00
committed by Andreas Kling
parent 0e41072db7
commit 17928fa13d
Notes: github-actions[bot] 2026-04-03 12:30:50 +00:00
2 changed files with 592 additions and 0 deletions

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<!DOCTYPE html>
<title>CSS Test: Absolutely positioned children of flexboxes</title>
<link rel="author" title="Google Inc." href="http://www.google.com/">
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#abspos-items">
<meta name="assert" content="Checks the abspos position of flex children in a number of writing modes, alignments, etc.">
<style>
.abspos {
height: 50px;
width: 50px;
background: lightblue;
position: absolute;
flex: none;
}
.relpos {
position: relative;
}
.title {
margin-top: 1em;
}
.flexbox {
display: flex;
background-color: #aaa;
height: 100px;
width: 100px;
}
.horizontal-tb {
writing-mode: horizontal-tb;
}
.vertical-rl {
writing-mode: vertical-rl;
}
.vertical-lr {
writing-mode: vertical-lr;
}
.rtl {
direction: rtl;
}
.ltr {
direction: ltr;
}
.align-items-flex-start {
align-items: flex-start;
}
.align-items-flex-end {
align-items: flex-end;
}
.align-items-stretch {
align-items: stretch;
}
.justify-content-flex-start {
justify-content: flex-start;
}
.justify-content-flex-end {
justify-content: flex-end;
}
.row {
flex-direction: row;
}
.row-reverse {
flex-direction: row-reverse;
}
.column {
flex-direction: column;
}
.column-reverse {
flex-direction: column-reverse;
}
.nowrap {
flex-wrap: nowrap;
}
.wrap {
flex-wrap: wrap;
}
.wrap-reverse {
flex-wrap: wrap-reverse;
}
</style>
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<script src="../../../resources/check-layout-th.js"></script>
<body onload="checkLayout('.flexbox')">
<div id=log></div>
<script>
var writingModes = ['horizontal-tb', 'vertical-rl', 'vertical-lr'];
var directions = ['ltr', 'rtl'];
var justifyContents = ['flex-start', 'flex-end'];
var alignItems = ['flex-start', 'flex-end', 'stretch'];
var flexDirections = ['row', 'column', 'row-reverse', 'column-reverse'];
var wraps = ['nowrap', 'wrap', 'wrap-reverse'];
// These expected values were harvested from Chrome 85. Firefox 78b6 agrees
// except when align-items:stretch and flex-wrap:wrap-reverse are both in
// effect.
// Chrome 83 and FF 78b6 agree with these values when the lone flex child is
// position:static instead of position:absolute. That is evidence that these
// values are all correct, because the position of a staticpos child is
// specified to be identical to the abspos position when there are no other
// children or specified offsets.
var x = [0,0,0,50,50,50,50,50,50,0,0,0,0,50,0,0,50,0,50,0,50,50,0,50,50,50,50,0,0,0,0,0,0,50,50,50,0,50,0,0,50,0,50,0,50,50,0,50,0,0,0,50,50,50,50,50,50,0,0,0,0,50,0,0,50,0,50,0,50,50,0,50,50,50,50,0,0,0,0,0,0,50,50,50,0,50,0,0,50,0,50,0,50,50,0,50,0,0,0,50,50,50,50,50,50,0,0,0,50,0,50,50,0,50,0,50,0,0,50,0,50,50,50,0,0,0,0,0,0,50,50,50,50,0,50,50,0,50,0,50,0,0,50,0,50,0,50,50,0,50,50,0,50,50,0,50,50,50,50,0,0,0,50,50,50,0,0,0,50,0,50,50,0,50,50,0,50,50,0,50,0,0,0,50,50,50,0,0,0,50,50,50,50,0,50,50,0,50,50,0,50,50,0,50,50,50,50,0,0,0,50,50,50,0,0,0,50,0,50,50,0,50,50,0,50,50,0,50,0,0,0,50,50,50,0,0,0,50,50,50,0,50,0,0,50,0,0,50,0,0,50,0,50,50,50,0,0,0,50,50,50,0,0,0,0,50,0,0,50,0,0,50,0,0,50,0,0,0,0,50,50,50,0,0,0,50,50,50,0,50,0,0,50,0,0,50,0,0,50,0,0,0,0,50,50,50,0,0,0,50,50,50,0,50,0,0,50,0,0,50,0,0,50,0,50,50,50,0,0,0,50,50,50,0,0,0,0,50,0,0,50,0,0,50,0,0,50,0,0,0,0,50,50,50,0,0,0,50,50,50,0,50,0,0,50,0,0,50,0,0,50,0,50,50,50,0,0,0,50,50,50,0,0,0,50,0,50,50,0,50,50,0,50,50,0,50,0,0,0,50,50,50,0,0,0,50,50,50,50,0,50,50,0,50,50,0,50,50,0,50,50,50,50,0,0,0,50,50,50,0,0,0];
var y = [0,50,0,0,50,0,0,50,0,0,50,0,0,0,0,50,50,50,0,0,0,50,50,50,0,50,0,0,50,0,0,50,0,0,50,0,50,50,50,0,0,0,50,50,50,0,0,0,0,50,0,0,50,0,0,50,0,0,50,0,0,0,0,50,50,50,0,0,0,50,50,50,0,50,0,0,50,0,0,50,0,0,50,0,50,50,50,0,0,0,50,50,50,0,0,0,50,0,50,50,0,50,50,0,50,50,0,50,0,0,0,50,50,50,0,0,0,50,50,50,50,0,50,50,0,50,50,0,50,50,0,50,50,50,50,0,0,0,50,50,50,0,0,0,0,0,0,50,50,50,50,50,50,0,0,0,0,50,0,0,50,0,50,0,50,50,0,50,50,50,50,0,0,0,0,0,0,50,50,50,0,50,0,0,50,0,50,0,50,50,0,50,0,0,0,50,50,50,50,50,50,0,0,0,0,50,0,0,50,0,50,0,50,50,0,50,50,50,50,0,0,0,0,0,0,50,50,50,0,50,0,0,50,0,50,0,50,50,0,50,0,0,0,50,50,50,50,50,50,0,0,0,50,0,50,50,0,50,0,50,0,0,50,0,50,50,50,0,0,0,0,0,0,50,50,50,50,0,50,50,0,50,0,50,0,0,50,0,0,0,0,50,50,50,50,50,50,0,0,0,0,50,0,0,50,0,50,0,50,50,0,50,50,50,50,0,0,0,0,0,0,50,50,50,0,50,0,0,50,0,50,0,50,50,0,50,0,0,0,50,50,50,50,50,50,0,0,0,0,50,0,0,50,0,50,0,50,50,0,50,50,50,50,0,0,0,0,0,0,50,50,50,0,50,0,0,50,0,50,0,50,50,0,50,0,0,0,50,50,50,50,50,50,0,0,0,50,0,50,50,0,50,0,50,0,0,50,0,50,50,50,0,0,0,0,0,0,50,50,50,50,0,50,50,0,50,0,50,0,0,50,0];
var test_number = 1;
writingModes.forEach(function(flexWritingMode) {
wraps.forEach(function(wrap) {
flexDirections.forEach(function(flexDirection) {
directions.forEach(function(direction) {
justifyContents.forEach(function(justifyContent) {
alignItems.forEach(function(alignment) {
var flexboxClassName = flexWritingMode + ' ' + direction + ' ' + flexDirection + ' justify-content-' + justifyContent + ' align-items-' + alignment + ' ' + wrap;
var title = document.createElement('div');
title.className = 'title';
title.innerHTML = flexboxClassName + " .flexbox " + (test_number++);
document.body.appendChild(title);
var flexbox = document.createElement('div');
flexbox.className = 'flexbox ' + flexboxClassName;
var child = document.createElement('div');
child.setAttribute('class', 'abspos');
child.setAttribute("data-offset-x", x.shift());
child.setAttribute("data-offset-y", y.shift());
flexbox.appendChild(child);
var relpos = document.createElement('div');
relpos.className = 'relpos';
relpos.appendChild(flexbox);
document.body.appendChild(relpos);
})
})
})
})
})
})
// Print the x,y offsets for pasting into above x,y arrays.
absposes = document.querySelectorAll('.abspos')
lefts = Array.from(absposes).map(x => x.offsetLeft)
tops = Array.from(absposes).map(x => x.offsetTop)
</script>
</body>