chromium/third_party/blink/web_tests/external/wpt/css/css-text/white-space/text-wrap-balance-005.html

<!DOCTYPE html>
<html lang="en" >
<meta charset="utf-8">
<title>CSS test: balancing and forced breaks</title>
<link rel='author' title='Florian Rivoal' href='https://florian.rivoal.net/'>
<link rel='help' href='https://drafts.csswg.org/css-text-4/#text-wrap-style'>
<meta name="assert" content="If the element is affected by line-clamp, the claming effect is applied first, then the remaining lines are balanced.">
<link rel="match" href="reference/text-wrap-balance-004-a-ref.html">
<link rel="match" href="reference/text-wrap-balance-004-b-ref.html">
<style>
div {
    border: solid;
    font-family: monospace;
    margin: 1ch;
    width: 8.5ch;
    /* the .5ch above should not be necessary,
       but in some browsers the ellipsis is a little larger than 1ch,
       so this gives it room to breathe.
       Needing this may or may not be a bug,
       but this is not what we're testing here.
     */
}
.test {
    border-color: blue;

    text-wrap-style: balance;
    line-clamp: 2;
    /* This code is unnecessary in any browser that supports the unprefixed version of line-clamp,
       but neither does it have any detrimental effect,
       and it broadens the test to browsers that only support the prefixed version */

    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.ref1 {
    border-color: orange;
}

.ref2 {
    border-color: magenta;
}
</style>

<p>Test passes if the box with a blue frame is identical either the orange or magenta one.

<div class=test>1 2 3 4 5 6 7 8 9
</div>

<div class=ref1>1 2 3 4 5 6 7 8…
</div>

<div class=ref2>1 2 3<br>4 5 6<br>7 8 9</div>