test_bug1120222.html

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<!DOCTYPE html>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1120222

-->

<head>

    <meta charset=utf-8>

    <title>Test document-title-changed observer</title>

    <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

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

</head>

<body>

    <script>

        SimpleTest.waitForExplicitFinish();

        const obsSvc = Cc["@mozilla.org/observer-service;1"].getService(Ci.nsIObserverService);

        const observer = {

            observe: (aSubject, aTopic, aData) => {

                if (aTopic === "document-title-changed") {

                    SimpleTest.ok(true, "document-title-changed was received.");

                    obsSvc.removeObserver(observer, "document-title-changed");

                    SimpleTest.finish();

},

};

        obsSvc.addObserver(observer, "document-title-changed");

        document.title = "Changed title";

    </script>

</body>

</html>