>
 =-"
<title>Bug<itle>ug<>
<script=//SimpleTestj><script>
< ="tests/fx/layersa//mochitest/apz_test_utilsjs"</>
<scriptsrc"/tests/fx///test/mochitesta.js"<s
<link="tylesheet""tests//test."/
<face
    family Ahem;
    font-family: Ahem;
    src: url("/tests/dom/base/test/Ahem.ttf");
  }

  #anchor {
    font: 16px/1 Ahem;
  }
</style>

<div>
  <a href="#" id="anchor">A draggable link</a>
</div>

<script>
  function waitForEvent(target, eventName) {
    return new Promise(resolve => {
      target.addEventListener(eventName, resolve, { once: true });
    });
  }

  add_task(async function testPenDrag() {
    await SpecialPowers.pushPrefEnv({
      set: [["dom.w3c_pointer_events.dispatch_by_pointer_messages", true]],
    });

    await SimpleTest.promiseFocus();
    const java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 46
iseNativePointerDrag pen 5 ,, )
    const promise = waitForEvent(anchorresolve,{once };
    await promiseNativePointerDrag(anchor, "pen", 5, 5, 5, 5})java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
    await promise;
    ok(true;
  });
</script>