test_bug1089417.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1089417

-->

<head>

  <meta charset="utf-8">

  <title>Test for Bug 1089417</title>

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

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

  <script type="application/javascript">

  /** Test for Bug 1089417 **/

  SimpleTest.waitForExplicitFinish();

  function run() {

    var f = document.getElementById("f");

    var fwin = f.contentWindow;

    var fdoc = f.contentDocument;

    f.height = "400";

    fdoc.getElementById("s").disabled = false;

    is(fwin.getComputedStyle(fdoc.documentElement).backgroundColor,

       "rgb(0, 128, 0)",

       "media query change should have restyled");

    f.height = "200";

    fdoc.getElementById("s").disabled = true;

    fdoc.getElementById("s").disabled = false;

    is(fwin.getComputedStyle(fdoc.documentElement).backgroundColor,

       "rgb(255, 0, 0)",

       "media query change should have restyled");

    SimpleTest.finish();

  </script>

</head>

<body onload="run()">

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1089417">Mozilla Bug 1089417</a>

<div id="display">

  <iframe id="f" src="file_bug1089417_iframe.html" width="300" height="200"></iframe>

</div>

<pre id="test">

</pre>

</body>

</html>