test_wheel_default_action.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test for default action of WheelEvent</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>

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

<div id="content" style="display: none">

</div>

<pre id="test">

<script type="application/javascript">

SimpleTest.waitForExplicitFinish();

SimpleTest.requestFlakyTimeout("untriaged");

SpecialPowers.pushPrefEnv({"set": [

    ["mousewheel.system_scroll_override.enabled", false]

]}, runTest);

var subWin = null;

function runTest() {

  subWin = window.open("window_wheel_default_action.html", "_blank",

                       "width=500,height=500,scrollbars=yes");

function finish()

  subWin.close();

  SimpleTest.finish();

</script>

</pre>

</body>

</html>