test_count_id.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test for the countId attribute of nsIAlertNotification</title>

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

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

</head>

<body>

<script class="testbody">

function makeAlert() {

  const alert = Cc["@mozilla.org/alert-notification;1"].createInstance(

    Ci.nsIAlertNotification

);

  alert.init("countIdTest", "", "title", "text");

  return alert;

const first = makeAlert();

const second = makeAlert();

isnot(first.countId, 0, "countId is assigned");

isnot(second.countId, 0, "countId is assigned for the second instance");

isnot(first.countId, second.countId, "instances get distinct countIds");

is(first.countId, first.countId, "countId is stable across reads");

</script>

</body>

</html>