<!DOCTYPE html>
<html>
<head>
<title>This tests that subtree layout works fine with positioned elements.</title>
<style>
div {
    width: 100px;
    height: 100px;
    background-color: green;
}
  
.positionedParent {
    position: absolute;
}
  
.boundaryParent {
    overflow: hidden;
}
  
.positionedChild {
    background-color: blue;
    position: absolute;
}
  
</style>
</head>
<body>
<div>
  <div class=positionedParent>
    <div class=boundaryParent>
	  <div id=sibling></div>
	  <div class=positionedChild>PASS if no assert in debug.</div>
    </div>
  </div>
</div>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}
setTimeout(function() {
    document.getElementById("sibling").style.width = "10px";
    setTimeout(function() {
        document.getElementById("sibling").style.width = "20px";
        if (window.testRunner)
            testRunner.notifyDone();
    }, 0);
}, 0);
</script>
</body>
</html>