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+<!doctype html>
+<html>
+  <head>
+    <title>Dragging a file to the system</title>
+    <style type="text/css">
+span { display: inline-block; height: 100px; width: 100px; background: orange; }
+    </style>
+    <script type="text/javascript">
+window.onload = function () {
+  var drag = document.getElementsByTagName('span')[0];
+  drag.ondragstart = function (e) {
+    e.dataTransfer.setData('text','PASS');
+    e.dataTransfer.effectAllowed = 'copy';
+    var filein = document.getElementsByTagName('input')[0];
+    if( !filein.files ) {
+      document.getElementsByTagName('p')[0].innerHTML = 'FAIL - file API is not supported.';
+      return;
+    }
+    if( !filein.files[0] ) {
+      document.getElementsByTagName('p')[0].innerHTML = 'FAIL - no file was found in the file input.';
+      return;
+    }
+    var thefile = filein.files[0];
+    try {
+      e.dataTransfer.items.add(thefile);
+    } catch(err) {
+      document.getElementsByTagName('p')[0].innerHTML = 'FAIL - error when adding file';
+      e.preventDefault();
+      return;
+    }
+    if( e.dataTransfer.files.length != 1 ) {
+      document.getElementsByTagName('p')[0].innerHTML = 'FAIL - file was not attached to data store';
+      e.preventDefault();
+    }
+  };
+};
+    </script>
+  </head>
+  <body>
+    <div>This test only applies to platforms where dropping a file onto a folder in the system's file manager copies/moves the file to that folder.</div>
+    <ol>
+      <li>Open an empty folder in your system's file manager.</li>
+      <li>Select a non-empty file on your computer using the following input: <input type="file"></li>
+      <li>Drag the orange square onto the folder in your system's file manager, and release it:<br><span draggable="true"></span></li>
+      <li>Pass if the file is copied to the folder.</li>
+    </ol>
+    <p></p>
+    <noscript><p>Enable JavaScript and reload</p></noscript>
+  </body>
+</html>