chromium/third_party/blink/web_tests/fast/dnd/dropEffect-for-file.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 {
  display: block;
  border: 1px solid black;
  width: 100px;
  height: 100px;
}
</style>

<p>
  Please download <a download href="resources/dragged-file.txt">this file</a>,
  and drag it into the box below, then click the "Done" button. Repeat this
  action until the test completes.
</p>

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

<p>
  <button class="done">Done</button>
</p>

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

<script>

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

</script>