Mypal/dom/tests/mochitest/webcomponents/test_custom_element_clone_c...

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HTML

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1081039
-->
<head>
<title>Test callbacks for cloned extended custom elements.</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1081039">Bug 1081039</a>
<script>
SimpleTest.waitForExplicitFinish();
// Test to make sure created callback is called on clones created after
// registering the custom element.
var count = 0;
var p = Object.create(HTMLButtonElement.prototype);
p.createdCallback = function() { // should be called by createElement and cloneNode
is(this.__proto__, p, "Correct prototype should be set on custom elements.");
if (++count == 2) {
SimpleTest.finish();
}
};
document.registerElement("x-foo", { prototype: p, extends: "button" });
var foo = document.createElement("button", {is: "x-foo"});
is(foo.getAttribute("is"), "x-foo");
var fooClone = foo.cloneNode(true);
SimpleTest.waitForExplicitFinish();
</script>
</body>
</html>