css/css-flexbox/relayout-image-load.html

<!DOCTYPE html>
<html>
<head>
<title>CSS Flexbox: Relayout after loading an image</title>
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#resolve-flexible-lengths">
<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-values">
<meta name="assert" content="This test ensures flexbox does a relayout after an image loads.">
<link href="support/flexbox.css" rel="stylesheet">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
</head>
<body>
<div id=log></div>
<p>Test passes if a green 100x100 image is rendered.</p>
<div id="test" class="flexbox">
    &nbsp;
    <div class="flexbox">
        <img data-expected-width=100 data-expected-height=100 id="image" onload="imageLoaded()">
    </div>
</div>
<script>

function changeImage()
{
    document.getElementById("image").src = "support/100x100-green.png";
}
step_timeout(changeImage, 0);

function imageLoaded()
{
    checkLayout('#test')
}
</script>
</body>
</html>