css/css-flexbox/change-column-flex-width.html

<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Flexbox: flex items inside flex-direction:column</title>
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-direction-property">
<meta name="assert" content="This test ensures that when main axis is logical y, layout flex items before getting intrinsic size."/>
<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>
<script>
function change() {
  document.body.offsetTop;
  var flex = document.getElementById("flex");
  flex.style.width = "100px";
  checkLayout("#container");
}
</script>
<body onload="change()">
<p>There should be a green square below. No red.</p>
<!-- #container is just here to make sure the test fails more reliably visually if the bug is present. -->
<div id="container" style="width:500px;">
    <div id="flex" style="display:flex; flex-direction:column; width:70px;" data-expected-height="100">
        <div style="background:red;" data-expected-height="100">
            <div style="float:left; width:50px; height:100px; background:green;"></div>
            <div style="float:left; width:50px; height:100px; background:green;"></div>
        </div>
    </div>
</div>
</body>