test_storageConstructor.html

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<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<title>Storage interface</title>

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

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

<script type="text/javascript">

function startTest()

  var functionCalled = false;

  is(localStorage instanceof Storage, true, "localStorage is instance of Storage");

  Storage.prototype.exists = function(key) {

    functionCalled = true;

    return this.getItem(key) != null;

  localStorage.setItem("test_prototype", "value");

  is(functionCalled, false, "Overridden function not called");

  is(localStorage.exists("test_prototype"), true, "Prototype overridden");

  is(functionCalled, true, "Overridden function called");

  localStorage.clear();

  SimpleTest.finish();

SimpleTest.waitForExplicitFinish();

</script>

</head>

<body onload="startTest();">

</body>

</html>