test_doc_scrollbar_toggled_designMode_on_mousedown.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=620906

-->

<head>

  <title>Test for Bug 620906</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <script src="/tests/SimpleTest/EventUtils.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=620906">Mozilla Bug 620906</a>

<p id="display"></p>

<div id="content">

  <iframe srcdoc=

    "<body contenteditable

          onmousedown='

            document.designMode=&quot;on&quot;;

            document.designMode=&quot;off&quot;;

      <div style='height: 1000px;'></div>

    </body>">

    </iframe>

</div>

<pre id="test">

<script type="application/javascript">

/** Test for Bug 620906 **/

SimpleTest.waitForExplicitFinish();

SimpleTest.waitForFocus(async () => {

  const iframe = document.querySelector("iframe");

  is(iframe.contentWindow.scrollY, 0, "Sanity check");

  const rect = iframe.getBoundingClientRect();

  const waitForTick = () => {

    return new Promise(resolve => requestAnimationFrame(

      () => requestAnimationFrame(resolve))

);

};

  await waitForTick();

  let scrollEventFired = false;

  iframe.contentWindow.addEventListener("scroll", () => {

    scrollEventFired = true;

  }, {once: true});

  for (let i = 0; i < 10; i++) {

    synthesizeMouse(iframe, rect.width - 4, rect.height / 2, { type: "mousemove" });

    synthesizeMouse(iframe, rect.width - 5, rect.height / 2, { type: "mousemove" });

    synthesizeMouse(iframe, rect.width - 5, rect.height / 2, {});

    await waitForTick();

    if (scrollEventFired) {

      isnot(iframe.contentWindow.scrollY, 0, "The scrollbar should work");

      SimpleTest.finish();

      return;

  ok(false, "The scrollbar didn't work");

  SimpleTest.finish();

});

</script>

</pre>

</body>

</html>