chromium/third_party/blink/web_tests/fast/dnd/dropEffect-for-image.html

<!doctype html>
<meta charset="utf-8">
<title>Drag and Drop: interaction between effectAllowed and dropEffect</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/interaction.html#drag-and-drop-processing-model">
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="resources/dropEffect-common.js"></script>
<style>
.box {
  border: 1px solid black;
  width: 100px;
  height: 100px;
}
</style>

<p>
  Please drag the green box into the "Drop Here" box repeatedly, until the test
  ends.
</p>

<p>
  <img class="dragged box no-ondragstart" src="resources/greenbox.png">
</p>

<div class="dropzone box">
  Drop Here
</div>

<p>
  Current test: <code id="test-description"></code>
</p>

<script>

dropEffectTests([
  { drop: 'copy', operation: 'copy' },
  { drop: 'link', operation: 'link' },
  { drop: 'move', operation: 'move' },
  { drop: 'none' },
  { drop: 'dummy', operation: 'copy' },
]);

</script>