chromium/third_party/blink/web_tests/external/wpt/css/css-text/white-space/trailing-ideographic-space-break-spaces-007.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Text level 3 Test: Breaking sequences of trailing ideograohic spaces </title>
<link rel="author" title="Javier Fernandez Garcia-Boente" href="mailto:[email protected]"/>
<link rel="help" href="https://drafts.csswg.org/css-text-3/#white-space-phase-2">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#valdef-white-space-break-spaces">
<link rel="match" href="reference/white-space-break-spaces-005-ref.html">
<meta name="assert" content="Setting white-space to 'break-spaces', hanging or collapsing the advance width of the spaces is not allowed.">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
div { font: 25px/1 Ahem; }
.test {
    z-index: -1;
    color: green;

    width: 4ch;
    white-space: break-spaces;
}
.test > span { background: red; }
.ref {
    color: transparent;
    background: green;
    position: absolute;
}
.ref > span { color: transparent; }
</style>

<p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
<div class="ref">XX<span>XX<br>XXXX<br>XXXX</br>XX</span>XX</div>
<div class="test">XX<span>&#x3000;&#x3000;&#x3000;&#x3000;&#x3000;&#x3000;&#x3000;&#x3000;&#x3000;&#x3000;&#x3000;&#x3000;</span>XX</div>