<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="../resources/test-helper.js"></script>
<head>
<title>Dropping image on vertical scrollbar of a scrollable block element</title>
<style type="text/css">
div[ondragenter]
  {width:2em;
  height:5em;
  margin-top:1em;
  font-size:1.5em;
  overflow-y:scroll;}
p:first-child
  {padding-left:1em;}
img
  {width:5px;
  height:5px;}
</style>
<script type="application/ecmascript">
function checkImage(event)
  {document.querySelector('div').firstChild.nodeValue = (document.querySelector('img').getAttribute('src') == event.dataTransfer.getData('text/uri-list').replace(/\r\n$/,''))?'P A S S':'F A I L';}
</script>
</head>
<body>
<p><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAYAAABytg0kAAAAEElEQVR42mNgaGD4D8YwBgAw9AX9Y9zBwwAAAABJRU5ErkJggg==" alt="PNG green pixel" ondragstart="event.dataTransfer.effectAllowed = 'copy'"/></p>
<p>Drag little square above and drop it on scrollbar below. You should see word PASS when you drop it on scrollbar.</p>
<div ondragenter="event.preventDefault()" ondragover="return false">→ → → → → → → → → → → → → → → → → → → →</div>
<script>
async function test(){
  await new Promise(loaded => window.addEventListener("load", loaded));
  const img = document.querySelector('img');
  const div = document.querySelector('div');
  function onDropCallBack(event) {
    checkImage(event);
    assert_true(div.firstChild.nodeValue == 'P A S S');
    return true;
  }

  dragDropTest(img, div, onDropCallBack, 'Dragging the image to the vertical scrollbar within a scrollable block element should copy it there');
}
test();
</script>
</body>
</html>
